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Guo ke +8613299042234 [email protected]
Page 1 /Total 118page(s)
Feasibility Study Report
on
50,000T/Y Blast Furnace Iron Making Project
Contact: Mr. Guo ke/郭 珂
Email: [email protected]
Skype: guoke896884090
Mobile:+86 13299042234
Location: Xi'an City, Shaanxi Province, China
Professional: Submerged Arc Furnace and chain equipment, Electric
Arc Furnace and chain equipment, Blast Furnace and chain
equipment, Induction Furnace, Ferroalloys, Refractory Materials,
Ores, Metals and etc.
2015
Guo ke +8613299042234 [email protected]
Page 2 /Total 118page(s)
Directory
Chapter I General
1.1 Overview
1.2 Project brief
1.3 Project construction necessity
1.4 The feasibility and advantages of the project implementation
1.5 Main design principles
1.6. Construction conditions
1.7 Selection of process schemes
1.8 Construction scale and product plan
1.9 Investment estimation
1.10 Technical and economic evaluation
Chapter II Market analysis
2.1 World nickel resources
2.2 Nickel and nickel alloy production
2.3 Nickel consumption
2.4 Nickel price
Chapter III Raw material process technology
3.1 Overview
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3.2 Design scale
3.3 Process design
3.4 Raw material system of fuel consumption
3.5 Material working system
Chapter IV Sintering process
4.1 Design scale, working system and the product scheme
4.2 Production process
4.3 Main technical and economic indexes
Chapter V Iron making process
5.1 Overview
5.2 Process flow
5.3 Blast furnace production technology index
5.6 Main equipments of blast furnace system
Chapter VI Lime kiln
6.1 Lime kiln process introduction
6.2 Main raw materials\
6.3 Proposed scale
6.4 Installed capacity
6.5 Main technical indicators
Chapter VII Public auxiliary system
7.1 Supply and distribution facilities
7.2 Water supply and drainage facilities
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7.3 Heating facilities
7.4 Ventilation and dust removal facilities
7.5 Inspection test
7.6 General layout
7.7Environmental protection and comprehensive utilization
7.8 Occupational health and safety, fire control
Chapter VIII Technical and economic analysis
8.1 Factory system and organization
Chapter IX Project implementation plan
9.1 Construction cycle planning
9.2 Schedule for each implementation stage
Chapter X Investment estimation and fund raising
10.1 Investment estimation
10.2 Raising funds
Chapter XI Technical and economic analysis
11.1 Specifications
11.2 Basic data
11.3 Product cost
11.4 Investment recovery period
Guo ke +8613299042234 [email protected]
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Chapter I General
1.1 Overview
1.1.1 Project name
50000 tons annual output blast furnace ferronickel (nickel metal
5000 tons / ton) project
1.1.2 Project construction company
*** International Indonesia Mining Investment Company Limited
1.1.3 Project construction site
*** Province of Indonesia, North Maluku located in the North
Maluku islands with an area of 33278 square kilometers is one of the
most concentrated areas of Indonesia's mineral resources.
1.2 Project brief
*** International Indonesia Mining Investment Company Limited, by
virtue of years of high-speed development in Indonesia coal electricity,
iron ore and the success of the project operation and the of
international bulk trade, have set a good example and get the objective
economic benefit, and trained a large number of talent teams from
mining to smelting and international bulk trade in Indonesia and
Southeast Asia.
This project is the project of *** International Indonesia Mining
Investment Company Limited nickel ore and smelting integration
phase I project, one raw material factory, 1 * 150m3 lime kiln, 1 * 52m2
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belt sintering machine, 2 * 80m3, 2X3MW blast furnace gas power
generation and auxiliary power supply system, water supply and
drainage system, environmental protection facilities and fire safety
facilities etc. are proposed. The technology system is based on the
basis of the induced technology digestion, innovation and promotion
and the combination of Indonesia actual situation. This project takes
the environment friendly enterprise construction resource conservation
as important strategic objectives, based on a high starting point, high
efficiency and high level to promote the construction of Indonesian
nickel iron alloy base, shall make the contribution for the orderly and
scientific development of Iindonesia nickel industry.
1.3 Project construction necessity
Nickel as a strategic material, known as the "industrial vitamin",
plays an important role in the development of the national economy
and national defense industry. The main application is to manufacture
of stainless steel, high nickel alloy steel and alloy structural steel, and
widely used in aircraft, radar, missiles, tanks, ships, rockets, spacecraft,
atomic reactor and other military manufacturing; in the civilian industry,
it is often applied for structure steel, acid resistant steel, heat resistant
steel which are extensively used in a variety of mechanical
manufacturing industry, petroleum; Ni and other elements such as
chromium, copper, aluminum,and cobalt can be composed of nickel
base alloy and Ni Cr base alloy. Nickel base alloy and nickel chromium
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base alloy are high temperature resistant, oxidation resistant material,
used in the manufacture of jet turbine, resistance, electric heating
elements, high temperature equipment structure parts; Ni can also be
applied in ceramic parts of anti-corrosion coating; Ni Co alloy is a kind
of permanent magnetic material, which is widely used in electronic
remote control, atomic energy industry and ultrasound technology and
other fields, nickel is used as hydrogenation catalyst in the chemical
industry. In the early seventies and the late nineties of last century,
global consumption of nickel fluctuated with war and recession, but
basically increased according to the average annual growth rate of
more than 6.5%.
Nickel ore types are mainly nickel sulfide ore and nickel oxide ore
(also called laterite nickel ore), nickel sulfide ore selecting is easier
than nickel oxide ore, mining nickel sulfide ore is main exploration, but
after years of exploration, the nickel sulfide resources are drying up,
nickel smelting companies around the world turns to focus on the
mining of nickel oxide ore resources.
1.4 The feasibility and advantages of the project implementation
1.4.1 Shortage of domestic nickel resources and the rapid
development of downstream nickel pig iron / stainless steel industry
provided the control condition of the operation integration mode.
1.4.2 The integration strategy of ore origin and product method
has obvious cost advantage
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Nickel pig iron is an important raw material for production of
domestic stainless steel industry, nickel pig iron market supply
accounted for nickel metal supply 50% in 2010. Although the supply
has increased, due to Chinese nickel pig iron production mainly relies
on imports of ore and then processing, the current industry average
cost of about $9 per pound is two times the average cost of production
of global nickel manufacturers of the above, located at the high-end of
the global nickel cost curve. The integration operation of ore to
production of nickel containing pig iron in Indonesia makes nickel pig
iron cash cost expected to be reduced to $4.2 per pound, 50% less
than the domestic pig iron enterprises currently cash cost. The project
has the obvious advantage of cost competition and higher profitability
than the industry average level.
1.4.3 The integration strategy of ore origin and product is in line with
the strategic development needs
Indonesia has rich laterite nickel ore resources, but mine
development and downstream smelting is still in the early stages of
development. In addition to a small number of large
international mining group in the local operation,other mines of small
scale operations are very little further to the downstream extension
for construction of sintering or smelting factory. The
Indonesian mining law promulgated in 2009, since 2014, the important
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commodities (including nickel) can be exported only by local primary
processing or deep processing ( nickel content for export should be
not less than 6%) . Indonesia nickel mine owners would have the
ability of processing and smelting enterprises to form alliances in order
to solve the problem of long-term mineral sales.
1.4.4 Chinese has stable and reliable technical advantage
Since 2005, China has tried a lot of small blast furnace
smelting iron and has gained rich experience and trained a large
number of professional smelting personnel and technical management
personnel, therefore, has reliable support for the blast furnace
smelting technology investment.
1.4.5 Project risk is controllable with ample cash flow and high
investment returning
Compared with other black and non-ferrous metal mines, the scale
of Indonesian laterite nickel ore exploitation investment is relatively
small, the project development risk is controllable. The project cash
flow and debt rate are low, the anti risk ability of the integration
operation is higher.
1.5 Main design principles
According to the Indonesian national policy on economic
construction and combined with the actual situation of the project, the
following construction principles are identified:
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(1) The design conforms to the Indonesian
national current technology policy and industrial policy requirements;
(2) All professional designs meet the requirements of the relevant
design specifications of Indonesia;
(3) The process technology is mature, reliable, and advanced;
(4) The engineering has been carefully designed and saved
investment to meet the process requirements;
(5) To implement "three simultaneous" protection principle, all
kinds of pollution shall be subject to the governance of post discharge
standard.
1.6. Construction conditions
1.6.1 Main raw materials supply
Laterite nickel laterite ore supply: Indonesian mines, accounting
for about 70% of overall raw materials;
Limestone: Indonesia procurement accounted for the overall raw
materials, raw materials accounted for about 3% of the total.
Coke: China import, or using the Australian coking
coal with local lignite coke production accounted for the overall 23% of
raw materials.
Fluorite: Chinese imports less than 1%.
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Brown coal: Indonesia, mainly used for power generation of about
2%.
1.6.2 Power supply conditions
Because the Indonesian power shortage, therefore consider the
use of diesel generator starting, blast furnace gas with local lignite fired
for plant power use, the installation capacity of 2X3MW. Blast furnace
gas calorific values 800~900Kcal.
1.6.3 water supply conditions
The project water source of production, life and fireproof is from
self built water supply station, water from the local river purification.
Water supply can fully meet the needs of water project construction
and project operation.
1.6.4 Traffic conditions
Plant the general location, ocean transportation is convenient, in
the island's coastal location near the pier.
1.6.5 weather conditions and seismic intensity
The local temperature is higher, and the others are equal to the
temperature of Indonesia beach. The monthly mean temperature is
26.5 - 27 degrees.
Annual average temperature is not high due to the moisture
content difference throughout the year of the region dry and rainy
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seasons is little. For example, in November at noon on the highest
temperature is 31.9 degrees, and at the lowest temperature in May is
22.6 degrees in the night.
The local climate condition monthly records are shown in the table
below.
No. Climate Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 Rainfall (mm) 264 265 334 310 345 300 272 284 239 248 205 271
2 Riny days 20 14 23 18 18 20 20 20 10 11 12 18
3 Average
temperature 26.5 26.4 26.5 26.9 26.9 26.6 26.5 26.9 27 27 27 26.8
4 Moisture% 86 88 88 85 84 84 83 85 81 82 86 86
5 Wind speed 1.7 1.8 1.6 1.5 2.0 1.7 1.8 2.5 1.9 2.1 2.3 1.8
6 Max wind
speed 9.2 10.2 10.6 8.0 7.4 7.6 9.6 6.9 8.5 9.0 10.0 10.7
7 Wind direction NW NW S W E Nw E E E E E NW
Local air humidity is 81% to 88%, the average minimum occurred in
September, and the highest is in Feburay and March.
Basic earthquake intensity Ⅶ
1.6.6 Geology, geomorphology
1.6.6.1 The proposed project site, terrain to the elevation of 10-25
meters, slightly undulating.
The area belongs to the basic stability area. (Actual situation
according to the exploration report adjusted).
Information is provided from the relevant Indonesian customer,
analysis results are even soil distribution, stable layer, silty clay is the
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main soil, the site has good stability. The site category belongs to soft
soil. Simple site hydrogeological, groundwater type is quaternary pore
phreatic, groundwater buried depth, generally 3.5 ~ 4.5m, annual
variation of 2 ~ 3.0m, the highest groundwater buried depth is 1.5m.
Atmospheric precipitation is the supply water, surface evaporation is
the main excretion way. Plant area groundwater is weak to moderate
corrosive to concrete.
1.7 Selection of process schemes
For present extraction of metal nickel of the oxidation of nickel
laterite ore, mature technique adopts hydrometallurgy, pyrometallurgy
and other special smelting method. Hydrometallurgy can be divided
into reduction roasting ammonia leaching process, high pressure acid
leaching process, atmospheric pressure leaching process, heap
leaching process. Fire metallurgy can be divided into RKEF method,
blast furnace, blast furnace smelting low ice nickel, and nickel base
direct reduction iron. The other processs of smelting method are
atmospheric leaching method, rotary hearth furnace method, method
of biological leaching, chloridizing segregation. Because of lack of
electricity, laterite itself characteristic and weak industrial base in
Indonesia near sea area, the blast furnace is more suitable for the
current development of Indonesia with mature industrial production,
the investment and economic benefit, environmental protection,
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comprehensive considerations. So the plan is mainly on the blast
furnace process as the preferred scheme of the project, the following
discuss are detailed.
1.8 Construction scale and product plan
1.8.1 Construction scale and contents
The project total scale is proposed as one raw material factory, 1 *
150m3 lime kiln, 1 seat of 52m2 step sintering machine, 2 x 80m3 blast
furnace and corresponding iron cast facilities, power supply and
distribution system, water supply and drainage system, fire safety
facilities and environmental protection facilities.
The main construction contents:
(1) A raw materials plant (1 * 150m3 lime kiln), meet the 2 * 80m3 blast
furnace, 52m2 step sintering machine.
(2) the construction of 52m2 sintering machine design with coefficient
of 0.8t/m2·h, production 36.5t/set·h, sintering machine production
capacity of 280,000 t/a, 273,000 t/a sintered ore R2=0.5. The system
of sintering workshop is continuous work, daily three classes, each
class 8 hours, calendar operation rate of 87.7%, which is equivalent to
the host year working 320 days.
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(3) built two sets of 80m3 nickel iron blast furnace, blast furnace
utilization coefficient from 0.9t/m3·d, with an annual output of nickel
(nickel containing 10%) 50,000 t.
1.8.2 Product scheme
The main products are the nickel iron ingot; an annual output of
nickel (nickel metal 10%) about 50,000 tons.
1.8.3 Covering area
District of 10,000 square meters production is needed.
1.9 Investment estimation
The project total investment is¥25,0400,000.00 RMB.
1.10 Technical and economic evaluation
The main technical and economic indicators are summarised in
table 1-2.
Table 1-2 Main technical and economic indicators
No. Parameters Unit Qty Note
1 Products and capacity
Blast furnace ferronickel Ten thousands t/a 5 Ni 10%
2 Raw materials
Wet laterite Ten thousands t/a 42
Coke Ten thousands t/a 11
Limestone Ten thousands t/a 6.8
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No. Parameters Unit Qty Note
Anthracite t/a 2.4
3 Fuel and power
Diesel oil for power generation and vehicle L/a 1050000
4 General layout
Factory covering area m2 239900
Building coefficient % 46.98
Green rate % 18
5 Labor quota Person 473
6 Main economic indicators
6.1 Total investment of the project Ten thousands RMB/a 25040
6.2 Sales revenue Ten thousands RMB/a 60932.2
6.3 Total cost Ten thousands RMB/a 25327.4
6.4 Operating costs Ten thousands RMB/a 19010.5
6.10 Gross profit Ten thousands RMB/a 5131
6.12 All investment recovery period a 1.82 Before
tax
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Chapter II Market analysis
Nickel is a silvery white metal, with high mechanical strength,
good ductility, and difficult to melting and oxidation in the air and other
excellent characteristics, stainless steel and various alloy steel made
by nickel is widely used in aircraft, tanks, ships, radar, missiles,
spacecraft and civil industry machine manufacturing, ceramic pigment,
permanent magnetic materials and electronic remote control and other
fields. In the chemical industry, nickel is often used as hydrogenation
catalyst. In recent years, in the home appliances, communications
equipment, the use of nickel is also growing rapidly.
2.1 World nickel resources
Nickel resources in the world is rich, according to American
geological survey data in 2009, the world nickel reserves of
70,000,000T, based reserves 150,000,000T, mainly distributed in
Australia, New Caledonia, Canada, Russia, Cuba, Brazil, South Africa
and Indonesia and other countries. The top ten countries or regions, its
reserves and accounts for over 93% of the world's total storage. About
60% of them are laterite nickel ore, 40% is nickel sulfide ore.
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Refer to table 2-1 and figure 2-1.
Figure2-1 World nickel reserves and reserve base
Talble2-1 World nickel reserves and reserve base
Unit: ten thousands tones
Turns Country and area Reserve Rreserve base
1 Australia 2600 2900
2 New Caledonia 710 1500
3 Russia 660 920
4 Cuba 560 2300
5 Canada 490 1500
6 Brazil 450 830
7 South Africa 370 1200
8 Indonesia 320 1300
9 Columbia 140 270
10 China 110 760
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11 Philippines 94 520
12 Dominican Republic 72 100
13 Venezuela 56 63
14 Botswana 49 92
15 Greece 49 90
16 Zimbabwe 1.5 26
17 Others 220 610
World total(In million tons) 7000 15000
Laterite ore are mainly distributed within the two areas of the
scope of the north and south regression lines: one is Oceania New
Caledonia, eastern Australia, north to the south of Indonesia and
Philippines; another is in Central America and Caribbean. Nickel
sulfide ore are mainly distributed in three regions, namely, the
Canadian lakes and the Hudson Bay region, northern Russia, Norilsk
and the Kola off Western Australia.
Nickel resources in the world are rich with great potential for
prospecting. Cuba northeastern, Canada, Russia, to bury Norilsk New
Caledonia and Philippines Suri are high nickel mining world famous
nickel mine area. Estimates of the world's top 5 nickel producers are as
follows: Russia Norilsk nickel 18%, CVRD (vale) 17% BHP, Xstrata,
11% 9%, China Jinchuan 8%, the rest of the world 37%.
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Nickel ore resources in China is rich, the national reserves of
7,600,000 t. Mainly distributed in the northwest, southwest and
northeast area, its reserves accounts for the national total reserves
ratio were 76.8%, 12.1%, 4.9%. Gansu nickel reserves most countries,
accounts for the nickel ore total reserves of 62%, followed by Xinjiang
(11.6%), Yunnan (8.9%), Jilin (4.4%), Hubei (3.4%) and sichuan
(3.3%).
Nickel resources in China is mainly copper sulfide nickel based,
accounting for the total reserves of 85 ~ 90%, nickel sulfide ores
average nickel content of more than 1% of the total reserves of 44.1%.
Relatively speaking, nickel oxide ore is relatively less, and the grade is
relatively low, the lack of competitiveness. Nickel resources in the
overall China deficiency, in addition to Jinchuan, mostly small lean ore.
2.2 Nickel and nickel alloy production
2.2.1 Nickel production
According to statistics, in 2009 the world mine nickel production
capacity is about 1,369,000 T, a decrease of 7.7% compared to the
same period. The main production countries are Russia, Canada,
Australia, Indonesia, New Caledonia. Among them. the Russian output
in 2009 was 274,800 T, accounting for about 20% of global output in
that year, ranking first in the world. Followed by Indonesia and
Australia, respectively accounted for 13.9% and 9% of
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globalproduction. The main mine output world statistics are shown in
table 2-2.
The 2009, world refined nickel production capacity is about
1,318,000 T, a decrease of 2.3% compared to the same period. The
main production of production countries are China, Russia, Canada,
Japan, Australia, the yield of China's rapid growth of was 246,700 T,
ranking first in the world, accounting for about 18.7% of global output
of the year. The world's major countries refined nickel output statistics
are shown in table 2-3.
Since 2010, with the nickel price rebounding, most enterprises
stopped production during the financial crisis forced have started to
resume production, and the strike of Companhia Vale do Rio Doce
Canadian nickel project ended, the global nickel production increased
significantly in this year. According to INSG statistics show that in 2010
the global nickel production is about 1,420,000 tons, compared to 2009
increased by nearly 80,000 tons, with many of new nickel construction
projectsput into production, output is expected to increase substantially
in 2011, global nickel production reached 1,600,000 tons and more
than 180,000 tons in 2010.The global nickel new project put into
production in 2011, refer to table 2-4.
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Table 2-2 From 1999 to 2009, the main countries in the world of refined nickel output Unit Thousands Tones
Year 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Russia 262 266 273 267 301 289 289 290 294 287 274.8
Australia 120 170 197 188 191 187 186 179 183 200 168
Canada 186 191 194 189 163 187 200 234 255 260 136.6
New Caledonia 110 128 113 100 112 118 112 103 125 103 91.5
Indonesia 76 71 118 143 144 136 135 140 229 193 190.6
Cuba 64 68 73 71 67 72 72 74 75 67 67
China 50 50 52 54 61 76 73 69 70 72 81.1
Brazil 33 32 46 45 45 45 37 36 37 38 32.8
Columbia 28 28 38 44 48 49 53 51 49 42 50.9
South Africa 36 37 36 39 41 40 42 42 37 32 34.4
10 Coutries in total 963 1040 1139 1140 1173 1198 1198 1218 1355 1291 1126
10 Coutries in total rated 91.1% 91.4% 90.6% 89.8% 89.8% 90.5% 88.8% 85.9% 86.9% 87.0% 82.24
World total 1058 1138 1256 1269 1307 1324 1349 1417 1559 1484 1369
Annual increasing rate -7.1% 7.6% 10.3% 1.0% 3.0% 1.3% 1.9% 5.1% 10.0% -4.8% -7.7%
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Table 2-3 From 1999 to 2009, the main countries in the world of refined nickel output Unit Thousands T
Year 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Russia 238 242 248 243 264 261 268 274 267 260 246.5
Japan 132 161 154 158 163 169 164 152 161 157 142.8
Canada 124 134 141 145 124 152 140 154 163 168 116.9
Australia 84 112 128 132 129 122 122 114 114 108 108
Norway 74 59 68 69 77 71 85 82 88 89 88.6
Finland 53 54 55 55 53 50 41 47 55 51 40.8
China 44 51 50 52 65 76 95 108 220 171 246.7
New Caledonia 45 44 46 49 51 43 47 49 43 38 38.2
Cuba 38 40 41 42 39 42 42 42 44 35 33.4
Columbia 28 28 38 44 48 49 53 51 49 42 50.9
10 Coutries in total 861 924 969 988 1012 1035 1056 1073 1204 1117 1112.8
10 Coutries in total rated 83.0% 83.3% 83.7% 83.3% 83.5% 82.6% 81.5% 80.7% 83.0% 82.8% 84.4%
World total 1037 1109 1157 1187 1211 1252 1296 1330 1450 1350 1318.2
Annual increasing rate -0.4% 6.9% 4.3% 2.5% 2.1% 3.4% 3.4% 2.7% 9.0% -6.9% -2.3%
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Table 2-4 Production of the 2011 global nickel new project
Project Country Product Expected output
Ambatovy Madagascar Electrolytic nickel 15,000T
Tagaung Taung Burma Nickel alloy 5,000T
Onca Puma Brazil Nickel alloy 20,000T
Barro Alto Brazil Nickel alloy 20,000T
Goro New Caledonia Intermediate products 15,000T
Ramu Papua New Guinea Intermediate products 15,000T
NPI China Nickel pig iron 60,000T
In 2009, the world has new 4 nickel mines, including Canada's 2 seats,
Chinese 1 seat, Finland 1 seat, all is sulfide nickel deposit. 4 mine reserves
totals in 54,000 tons, the amount of resources amounted to 2,907,600 tons with
the total production capacity of 56,700 tons / year. From 2009 to 2012, the
global mineral company has announced the expansion of 5 mines, which China
2 seats, Australia, South Africa and Finland all 1 seats, all is sulfide nickel
deposit. 5 mine reserves totals 865,000 tons, the amount of resources
amounted to 3,292,000 tons with the new production capacity of the total 59,500
tons / year. May foresee, in the next two years, the global nickel production
increase is a foregone conclusion.
2.2.2 Nickel alloy production
The worldwide production of nickel mainly metal nickel, nickel alloy, nickel
block and other nickel products
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Nickel alloy is the product by fire process for treatment of laterite nickel ore,
100% nickel alloy is used in the production of stainless steel.
In the past few years, the world's major nickel alloy production countries
and regions are: Japan, New Caledonia, Columbia, the Republic of Dominica
and Greek. The desired nickel alloy production in Japan of nickel laterite ore are
totally dependent on imports, other countries and regions by the local mine
production.
With the Chinese stainless steel production capacity continues to expand
and rising nickel prices, in recent years the coastal area of Southeast Asia
Chinese using nickel laterite nickel alloy production enterprises has the rapidly
growed. However, with the national energy saving and emission reduction as
well as single nickel alloy products user constraints, nickel alloy production
enterprise's competition will be fierce.
2.3 Nickel consumption
Nickel consumption can be summarized as follows: stainless steel(60%),
nonferrous alloys (14%), alloy steel (9%), nickel (6%), (3%), other castings (8%).
From the consumption structure, the world nickel leading consumer market is
the metallurgical industry, accounting for more than 80% of total consumption,
stainless steel consumption accounted for above 60% of total consumption of
nickel, referring to figure 2-2. Therefore, the demand for nickel is particularly
high related with stainless steel production. According to the International Iron
and Steel Institute released data showing, global stainless steel output in 2007
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compared with 5.1% growth in 2006, up to 29,800,000T. Prior to 2012, global
stainless steel output will grow at an annual rate of 6%. According to the
organisation, the yield increase parts mainly from China, China stainless steel
yield are far more than other countries. International Iron and Steel Institute
expected, Asia's stainless steel output increased by 11.8% to 16,850,000T with
the yield increased 400,000Tt in central and Eastern Europe, Western Europe,
and the Americas Africa stainless steel output will decline slightly. Global
stainless steel output in 2006 was 28,400,000T, an increase of 16.7% compared
to 2005. China now is the world's largest stainless steel consumption, in the
2008, the use of China stainless steel ratio is the sum of the past two years the
largest user American stainless steel consumption and Japan dosage.
Figure 2-2 World nickel consumption structure diagram
Compared with the electroless nickel used in production of stainless steel,
nickel alloy used for stainless steel production, due to the iron nickel alloy, and
its shape is commonly pill or flake, can improve the production efficiency of AOD
converter, so he is popular with the stainless steel production enterprises.
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Since 2005, China has replaced Japan as the largest country in the nickel
consumption in the world, the other major nickel consumption states are Japan,
the United States, Germany, China Taiwan and South Korea. After a few years,
nickel consumption has been growing steadily, until the outbreak of the global
financial crisis in 2008. Affected by financial crisis, the global economic situation
is generally low, stainless steel demand led to the decrease of the nickel
consumption appeared obvious. Global nickel consumption of 1.297 million tons
in 2008, compared with1.421 million tons of 2007 decreased by 124,000 tons
with 8.8%. Global nickel consumption in 2009 is a slight rise from the previous
year, 1.306 million tons, 0.7% increase over last year. And from the point of
consumption in different countries or areas change, nickel consumption
increased in China, and many traditional nickel consumption power
consumption is decreased.
The world's major countries nickel consumption statistics are shown in table 2
-5.
Table 2-5 Unit: One Thousands T
World's major countries nickel consumption
No. Year 2001 2002 2003 2004 2005 2006 2007 2008 2009
1 Japan 199 170 188 195 171 188 196 185 148
2 US 129 121 117 128 128 136 162 121 92
3 German 103 118 95 95 116 106 110 90 62
4 China Taiwan 92 104 103 91 84 107 76 69 64
5 China 85 84 133 144 201 225 328 305 541
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6 Italy 63 72 71 62 60 60 64 68 44
7 South Korea 59 96 113 123 118 101 71 76 93
8 France 49 58 46 34 32 32 31 28 15
9 Spain 48 50 48 48 48 60 42 41 24
10 Coutries in total 828 871 912 920 958 1016 1079 983 1083
10 Coutries in total
rated 72.8% 73.5% 73.2% 73.7% 73.8% 73.8% 75.9% 75.8% 82.9%
World total 1138 1186 1247 1247 1297 1377 1421 1297 1306
Annual increasing rate -2.9% 4.3% 5.1% 0.0% 4.0% 6.1% 3.2% -8.8% 0.7%
From the point of world supply and demand situation, the world nickel
consumption was 1.306 million tons in 2001 between 2009 and 2009
consumption increased by 168,100 tons with annual average growth rate of
1.8%. Global nickel production 1.327 million tons in 2009-2001 and 2009
consumption increase of 169,600 tons with annual average growth rate of 1.8%.
Visible basic global nickel consumption and production growth are synchronized.
From the domestic supply and demand situation, domestic consumption of
nickel in 2009 is 456,000 tons, average annual growth rate of 29.1% from
2001 and higher than that of nickel 26.4% average annual production growth
rate, domestic demand gap of nickel increased year by year. In recent years,
with the rapid development of China's economy, the demand for stainless steel
speeding growth, are the major cause of nickel consumption is increasing.
According to the relevant institutions analysis, global stainless steel
production in 2010 reached 30.15 million tons, which is compared with 25.03
million tons last year increasing by 20.5%, the expected in 2011 will reach 33
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million tons. In 2010 China's stainless steel output reached 2010 tons,
accounting for 35.8% of global output, increased 18.4% year-on-year. Stainless
steel production of other main countries and regions such as America, Europe,
Japan, China Taiwan, also appeared a large growth, increased by 37%, 23%,
28.7% and 37% year-on-year. Therefore, with the improvement of the global
economic situation, stainless steel production is in the leap. The rapid
development of the stainless steel industry promoted the increase of nickel
consumption, and the demands for nickel stainless steel field also have obvious
improvement. The field of stainless steel to nickel consumption in 2010
year-on-year growth of 10-13%, global nickel consumption will also increase to
1.46 million tons. Global nickel market balance of supply and demand is shown
in table 2-6.
Table 2-6 Worldwide nickel market supply and demand
Unit: Thousand tons.
2001 2002 2003 2004 2005 2006 2007 2008 2009
Global
consumption 1138 1186 1247 1247 1297 1377 1421 1297 1306
Global
production 1157 1187 1211 1252 1296 1330 1450 1354 1327
Global balance
of supply and
demand
20 0 -36 5 -2 -47 29 57 21
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China's
consumption 85 84 133 144 201 225 328 305 541
China's
production 50 52 65 76 95 108 220 171 247
China's supply
and demand
balance
-36 -32 -68 -68 -106 -117 -108 -135 -295
At present, to year of 2012 the global mining new increase production
capacity of about 360,000 tons shall be built, and the next few years, China
stainless steel production willnot continue to maintain the high speed growth of
nearly 10 years of state. Therefore, from the perspective of supply and demand,
the next few years market supply shortage situation the probability is very small.
In 2008, world refined nickel consumption is 1,297,000T, the average
growth rate of refined nickel consumption is about 3.4%.over the past ten years.
World nickel consumption the main countries or regions are Chinese (305,000
T), Japan (185,000 T), American (121,000 T), Chinese Taiwan (69,000 T),
Germany (90,000 T) and South Korea (76,000 t). In 2008 the six countries and
areas consumption accounted for more than 65% of the entire world's
consumption. In recent years, China nickel consumption grows very raoidly,
China nickel consumption in 2008 accounts 23.5% of the world consumption,
ranked first. The main areas of the world nickel consumption has shifted from
western developed countries and regions to the emerging economies in Asia,
such as China, South Korea, Taiwan and other countries and regions China.
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2.4 Nickel price
2007 is not the ordinary nickel market year, whether it is the daily price of
nickel (May 10th three month futures price of nickel reached 52,000 U. S. dollars
/ ton), or average price (36,825 U. S. dollars / ton) are a high record. In 2008
May, nickel prices plummeted, nickel prices in October fell to historic lows,
stainless steel factory mass production, nickel alloy market rapidly shrinking, a
large number of enterprises ore heat furnace shutdown, crashed in May, and in
October the two month nickel prices, caused a fatal blow to China nickel alloy
industry. The new project nickel alloy is gradually stopped or delayed operation.
In 2009, affected by the economic situation in the big environment of the
nickel, sluggish demand in the first half of the year, almost half of the nickel
production in the parking state, LME nickel prices overall trend is upward shock
trend, the global steel industry began to pick up, and laid the foundation for the
nickel price rise. End of Feburay and March after fell below 9,000 U. S. dollars /
ton, and then the price of nickel nickel began, in the repeated shocks, breaks
through 20,000 dollars / ton, although later back somewhat, but in the end back
to US $19,000 / ton high. In 2009 LME nickel three month futures price for
14,690 U.S. dollars / ton, down 36% compared to the same period, average spot
price of US $14,662 / ton, down 35% yoy.
To 2010, in the macroeconomic environment greatly improved background,
LME nickel market rose a surge high and sweep forward market bull market.
Nickel price has made 34% of the increase in the first quarter, the two quarter
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was a sudden turn for the worse, to the third quarter, subject to China implement
the "energy-saving emission reduction" target and the falling US dollar impact,
nickel prices rising trend is recovered. March annual LME futures nickel price is
21,900 dollars / ton rose 49% compared with $14,690 a ton in 2009. Nearly 10
years of international nickel (LME) spot prices as refered to figure 2-3.
In 2011 the global economy is still upward, global growth in 2011 is 3.6%,
fell 1.2% than in 2010, the developed countries and emerging market countries
increased by 2.2% and 6.4% respectively, according to the relevant agencies
predicted in 2011 China GDP growth rate is 9.2%. Country people's standard of
living and sustainable growth of the world economy and China, India in the
development of increased global demand will drive the metal further increased,
the price of nickel maintain a higher level will constitute a strong support.
Figure 2-3 the London metal exchange cash price chart
The world's major producers, investment banks and consulting institutions
in each year on a two years later nickel price forecast, but because of the nickel
price effected by supply and demand, exchange rate and speculative funds and
other multiple factors, it is difficult to predict the price of nickel. From the
prediction data of each institution in history, when the nickel price smaller
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fluctuations,it is at most institutions forecast range, if the nickel price fluctuates
greatly, that whll be almost beyond the forecast range of all institutions.
Nevertheless, various institutions still to predict the price of nickel using various
prediction methods.
According to the laws of economic development and historical data, nickel
prices will not long remain running at high or low, but fluctuated periodically. At
present, nickel prices are on the rise, because the next few years there will be
no shortage of market supply, nickel price few beyond the historical high prices
may. But the main international currency devaluation of the dollar in the next few
years the road will continue, and laterite nickel ore cost itself is higher than the
sulfide nickel ore, nickel prices down space is limited. After the 2014 April began
the Indonesian government for nickel ore export restrictions, China last
inventory reduction,it is expected in the next few years that the trend of rising
nickel prices will be significantly enhanced, nickel price reasonable should be in
the $17,000 / ton to 30,000 U. S. dollars / ton, up and down, many of the
industry professional institutions predicted the nickel price should be in nearly
five years over $20,000. The scheme evaluation get $19000 as an investment
appraisal price.
Nickel prices for investment project evaluation should be adopted, should in
theory be a predictor of long-term average price, this price prediction and
present current price may have a certain gap, especially the current price in the
nickel price change cycle valley value or the peak, this gap will be more obvious.
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Chapter III Raw material process technology
3.1 Overview
The design of this project includes the laterite drying kiln raw materials,
sintering raw materials, blast furnace raw materials, lime kiln raw material. The
blast furnace smelting raw material zone mainly service for 2 x 80m3 blast
furnace, assembled with the construction of 1 x 150m3 lime kiln and 1 x 52m2
step sintering machine production line.
3.2 Design scale
The blast furnace smelting raw material zone mainly service for 2 x 80m3
blast furnace assembled with the construction of 1 x 150m3 lime kiln and 1 x
52m2 step sintering machine production line, providing the original qualified raw
material and fuel. The annual production is 50,000 t blast furnace ferronickel
(containing nickel 10%). Sintering machine in the production capacity is 280,000
t/a, production requirement of blast furnace smelting of raw materials is 273,000
t/a; designed annual p laterite nickel ore rocessing capacity is 420,000 tons
(wet), the part of design includs wet laterite ore storage, drying, screening and
crushing processes and coke field, fusion reactor field and feeding facilities (for
sintering ingredients warehouse and blast furnace ore tank). Raw material yards
are all with rainproof facilities.
3.3 Process design
3.3.1 The main raw materials and fuels sources
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The main raw materials, feuls for blast furnace smelting includes laterite
nickel ore, coke, lime, and limestone, coke powder required by sintering
workshop shall be obtained by coke sieving and vibrating screen, anthracite can
be added for lackaged. Sintered powdershall be transported by belt machine
directly into the sintering batching room, not in raw material yard transferring.
The main chemical composition sources of raw materials and fuel are as
follows.
1) Laterite nickel ore
Annual blast furnace demand is 420,000 t/a, all from the group its own
mines in Indonesia, the particle size is ≤60, shipped by the car to laterite ore
yard for storage, design the storage period of ~ 1 month. Laterite ore powder
material components are shown in table 3-1.
T able 3-1 Laterite ore powder material composition
Item Ni SFe SiO2 MgO
Laterite ore ~1.8 20~25 26~34 12~18
2) Quick lime
The annual need is 50,000 t/a, mainly used for adjusting the sinter basicity,
its chemical composition is shown in table 3-3.
Table 3-3 Quick lime composition
Item CaO SiO2 MgO Al2O3 CO2 H2O
Quick lime 85.0 1.30 0.70 0.85 11.97 0
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As a result of moisture laterite nickel ore and with strong viscosity, the
purpose of mixing with lime in the process is dehydration
and alkalinity, lime ratio is 6-10%
3) Lime stone
The car transportation materials (outsourcing), annual consumption is
about 75,000 t/a, mainly used as a lime burning material and blast
furnace smelting fusion agent. The main technical indexes are shown in table
3-4.
Table 3-4. Lime stone composition
Item CaO SiO2 MgO Al2O3 CO2 H2O
Lime stone 45~55.22% <1 <1 0.02~1 42.81 2.0
4) Coke
Outsourcing
Table 3-5. Coke composition
C SiO2 Al2O3 CaO MgO FeO FeS (Fe)
84.0 7.05 5.44 0.45 0.15 0.30 0.27 0.40
3.3.2 Process comsists
The blast furnace smelting material area is designed for
annual processing 420,000 tons of nickel laterite ore, the design includes
wet laterite ore storage, drying, screening and crushing processes and coke
field, the fusion agent field and the feeding facilities.
The blast furnace smelting raw materials adopts traditional sintered
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ore. Because the main raw material of Indonesian laterite nickel ore properties
in sintering is special, heavy moisture, up to about 40% (including free water is
about 30%, the crystallization water about 10%).
Due to laterite nickel ore transported to the factory has more
moisture, drying processing is necessary to carry out, using the process of lime
block and the wet laterite ore mixing for dehydration, lime adding about 5~7%
for 10 days of dehydration. Dried laterite ore shall be sent to the production area
for the first time screening (gross screen), screen pore diameter is about
100mm, after crushing and screening,the parts less than 30mm shall be sent
for the sintering plant, less than 100mm and greater than 35mm for the blast
furnace direct use, more than 100mm shall crushied.
1) Laterite ore field
Wet laterite nickel ore field is located in the laterite ore mining place,
there is no field in the production area, wet laterite according to the scale of
10,000 tons storage.
The open field main operating equipments: excavator, forklift.
2) Nickel ore drying area
Laterite nickel ore drying area is 50 meters X100 meters X9 meters of steel
structure workshop according to the dry material scale of 2,000 tons storage.
3) Driedlaterite nickel ore processing
The laterite ore from the mine is dried, transported to the production area
and sieved with 100mm sieving,those which >100mm shall be storaged
temporarily for a certain amount of crushing, less than 100mm shall be sieved
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by rolling screening again, more than 35mm shall be sent for blast furnace
bunker stand-by, less than 35mm used as sintering material.
3.3.3 Process equipments configuration
To meet the needs of daily processing capacity of 600 tons of ore crushing
and screening system, apparatus is provided with 2 sets
of loaders, excavators and 1 the number of handling trucks and tape
machine number.
List of main equipment is shown in table 3-6.
Table 3-6. Raw material process main equipments
No. Raw material process system Quantity Working system
Remarks
1 Bar screen 2 Two shift system 40mm/10mm
2 Belt conveyor 2 Two shift system
3 Crusher 1 Two shift system
4 Roller screen 1 Two shift system
5 Loader 2
6 Raw materials sintering zone m2 1
7 Excavating machinery 1
3.4 Raw material system of fuel consumption
The raw material and fuel consumption are refered to the overview.
3.5 Material working system
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The raw material system of blast furnace smelting year’s production
days 330 days, two shifts per day, eight hours each shift.
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Chapter IV Sintering process
4.1 Design scale, working system and the product scheme
(1)Design scale
1x 52m2 step sintering machine is designed as uilization coefficient
0.8t/m2 · H , production capacity 36t/ · H,and annual production of finished
sinter quantity ability of 28t/a with ore requirement of 273,000 t/a . The sintered
ore R2=0.5, sinter, sinter size 5 ~ 150mm, which is larger than 25mm as raw
material for blast furnace, 10 to 15mm as the sintering bedding material, less
than 5mm as returning ore by the belt conveyor directly sent to the
sintering batching bin.
(2) Work system
The system of sintering workshop work for continuous duty, daily
three shifts, each shift 8 hours, calendar operation rate of 87.7%, which is
equivalent to 320 days of the year working .
(3) Product scheme
TFe:17%
CaO/SiO2:0.4
Sinterd ore physical properties:
Sintered ore size: 5 ~ 150mm (< 5mm less than 8%; the > 40mm < 20%);
Strength of sintered TUMBLER INDEX (+6.3mm): ≥ 67%
Finished sintered ore temperature: ≤150℃
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4.2 Production process
Sintering machine process from the accept and crushing of the raw material
and fuel, fusion agent screening, batching, mixing andgranulating, material
bedding,ignition and sintering, thermal ore crushing, sieving and cooling and
sintered ore output process.
52m2 step workshop concludes fuel first crushing chamber, fuel second
crushing chamber, batching chamber, first mixing machineroom,second mixing
and granulating chamber, the main sintering plant, main sintering dust
removal,main ventilation room, main chimney,conveyor gallery, transfer
stations and public auxiliary facilities etc., two sintering production line plant
independent of each other, only sharing the belt corridor.
4.2.1 Fuel, fusion agent, iron content material acceptance and storage
Fuel (coke powder or anthracite powder), fusion agent (limestone), raw
materials (nickel laterite ore, dust and debris removed ) are convoyed to the
corresponding batching bin sintering mixing chamber with loader or dump
trucks.
4.2.2 Fuel Crushing
In order to ensure the qualified size fuel sintering (3 ~ 0mm), the design
adopts separate two section fuel crushing process.
Fuel (broken coal or coke) shall be into fuel intermediate bin, through
the motor vibration feeder in the lower part of the hopper evenly into the tape
machine, the iron removed by the top of the belt machine before fuel enters
the crusher in order to ensure the normal work of the crusher. Followed by
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the belt machine transported into the fuel into the double roll crusher (φ750 x
500), four roll crusher ( φ 900 x 700) , crushed to 0 ~ 3mm, after
crushing about > 80% of the amount of fuel is less than 3mm.
4.2.3 Batching
Raw material and fuel will be batched to a certain proportion
of refined ferronickelaccording to the requirements of the sinter
chemical composition and supply situation of raw materials.
In order to ensure the correct batching, separate centralized weight
proportioning is adopted and automatic batching control system is by computer
control. Of which: raw materials used with the"disk feeder + electronic belt
scale (even speed)"batching; fuel using electronic belt scale (self control)
batching, limestone with "electronic belt weigher" of feeding, weighing and
batching.
Sintered shall be returned ore back to the batching chamber; dust ash in
the head precipitator, expand the precipitator and the step sintering
machine pipe shall fall into the water seal trough, wet material is added to
the mixture on a belt.
The mixed material will be added by the belt transport to the drum
mixer for mixing and granulating.
4.2.4 Mixing and granulating
The two sections of mixing and granulating apply mixing drum: the
first mixing for even mixture with specifications of the equipment withφ
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2.8X7m;the second mixing is mainly suitable adjustment of water and balling
with specifications of the equipment withφ2.8X9m.
4.2.5 Material feeding
The pelletized mixture shall be transported to the mixing silo at the top of
the sintering machine, and fed through adjustable speed cone feeder. Cone
feeder and reflection plate feeding device shall spread the mixture evenly on the
trolley. Trolley material thickness is about 500 ~ 600mm.
4.2.6 Ignition and sintering
Sintering ignition adopts preheating ignition of blast furnace gas for
micro negative pressure ignition technology, furnace pressure is the micro
positive pressure.
Preheating and ignition thermal insulation plane is sector, furnace adopts
the lower open type box cover structure. The furnace body are relatively closely
assembled with the hearth.
Because the blast furnace coal gas calorific value is low, in order to
guarantee a certain combustion temperature and the combustion quality,the
designed blast furnace gas ignition combustion air is preheated to 400 to 450
℃ . At the same time in order to reduce the ignition gas and solid fuel
consumption, the design adopts the high efficient and energy saving preheating
burner. The ignition zone furnace top is provided with two rows of blast furnace
gas and blast furnace gas ignition burner, the preheated air through the swirling
flow burner shall be ejected in mixed combustion to ensure that the finished
sintered with better surface quality and higher rate of ignition.
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After the ignition section (along the direction of sintering machine export 2
meters) is the insulating section, in order to improve the thermal insulation
effect, the furnace top is lower than the ignition section, ensuring
ignited material layer continue to fire, improve sinter quality. The
ignition temperature is 1150 ± 50 ℃ , the ignition time is 1min, the heat
preservation temperature 600 to 800℃, holding time of 1 ~ 1.5min.
Sintering machine adopts negative pressure suction deep bed sintering
process. After Mixture on sintering machine is ignited, negative pressure
ventilation sintering is operated, material layer thickness is 500 ~ 600mm.
4.2.7 Main ventilation and head dust removal system
In order to prevent environmental pollution, prolong the service life of
equipment and reduce the waste of raw materials, the main exhaust fan adopts
special fan. At the same time, two section type dust removal is set in front of the
blower (expanding precipitator + head filter), dust concentration after the dust
removal system is <50mg/m3, the collected dust as raw material recycling.
The main ventilation system consists of bellows, the smoke collecting ring,
horn shape exhausting pipe, expanding precipitator, head expand dust remover,
the main exhaust fan and the chimney.
Expanding precipitator specification is multi tube dust precipitator, head
dust removal is 80m2 four bag dust removal. Dust in the sintering machine, ash
pipe settlement expansion of dust remover and head precipitator collection
through the ash discharging pipe directly is discharged into the water seal
groove and the tank bottom by water seal zipper scraper conveyor, the wet
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material shall be unloaded to the mixture belt into mixing machine room for
pelletizing.
The main exhaust fan exhaust pressure is 13kPa, volume 5500 Nm3/min,
cooling suction air fan volume 6000 Nm3/min and pressure 8KPa,. In order to
reduce the noise in the outlet pipe of a blower a silencer is provided.
Sintering main chimney height is 35m, outlet of 3m diameter (ID).
4.2.8 Sintering crushing
The sintered ore before screening should be crushed below 80mm in order
to create conditions for blast furnace sintering cooling and supply uniform
particle size, and to prevent large sinter ore groove jamming smash transport
equipment.
The design of sinter cake crushing equipment adopts φ1500 * 2400 single
roll crusher. The sintered ore cake after step sintering machine tail shall be
discharged into the single roll crusher to less than 80mm, and sent to the
thermal vibration sieve crushed by conveyor belt. About 20mm can be directly
into the cabin and the 6~20mm as bedding. Returned are ore directly sent to the
hopper by belt.
4.2.9 Screening and cooling of sintered ore
After crushing, the sintered ore falls directly on the SZR2575 hot ore
vibrating screen screening, the fine part (less than 6mm hot returning ore) shall
be screened from the hot sinter to ensure that the air permeability and reduce
the resistance and dust emission in the cooling machine and powder ore into the
blast furnace.
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Thermal vibration sieves out the returning ore back to the batching
chamber.
Finish sintered ore shall be sent to single roll crusher, after crushing and
thermal vibration sieving for three levels, more than 20mm directly as the finish
sintered ore, less than 20 and greater than 6mm as bedding material, less than
6mm is sent to the sintering proportioning workshop via belt.
4.2.10 Sintering ore storage
Finished sintered ore is transported into buffer bin, directly to the blast
furnace ore tank, if the ore tank is full, into the buffer chamber, if the buffer bin is
full, it can enters the overflow of cold sinter belt and be sent to the yard.
4.2.11 Finish sintered ore groove
Considering the mismatch of the sintering maintenance and blast furnace,
the finish sintered ore groove buffer system is built with reserves of 2000t, so
that the sintering machine maintenance dose not affect blast furnace.
4.3 Main technical and economic indexes
The main technical and economic indexes of 1 * 52m2 step singtering
machine are shown in table 4-1
Table 4-1 52m2 step singtering machine main technical and economic index
No Items Unit Idex Remarks
1 Design size Set×m2 52m2
2 Step singtering machin
Effective area m2 52
Using coefficiency t/m2·h 0.8 Design value
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Working rate % 87.7 Design value
3 Annual working days d 320 Design value
4 Annual sintering capacity ×104t 28 Design value
5 Sintered ore quality
TFe % 17
CaO/ SiO2 0.4
Particle size mm 6~150
Cold sinter powder content
(0-6mm) % =10
ISO drum (+ 6.3 mm) % =60
6 Original, auxiliary materials
consumption per year
Laterite nickel ore (mixed
material) ×104t 42
Unit consumption
1538 kg/t
Quick lime ×104t 4.13 Unit consumption
170 kg/t
Coke powder ×104t/a 2.43 Unit consumption
100 kg/t
Blast furnace gas ×104Nm3
/a 675.54
Unit consumption
27.8Nm3/t-s
Electricity ×106kwh 6.08
Unit consumption
25 kwh /t
Water (new) ×104m3/h 8.5 Unit consumption
0.35 m3/t
Compressed air ×104m3 0.42 Unit consumption
0.12 m3/t
Installation capacity 4200KW
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7 Factory covering an area m2 20000
Note: Annual sintered ore design output 28, 0000 tons, more than blast furnace
ore 273,000 tons considering:
1. The matching issue of sintering and blast furnace production, material
storage space is reserved.
2, Sintering is affected by blast furnace and its own capacity.
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Chapter V Iron making process
5.1 Overview
As the last process of blast furnace smelting, laterite nickel ore will be
nickel iron after this procedure. All kinds of prepared materials (sintered laterite
ore, metallurgical coke, limestone) respectively shall be put into the trough,
loaded into the skip after the blast furnace burden calculated to the ratio of
various materials set by the number of all kinds of material ratio of automatic
weighing device controlled by microcomputer and charged into blast furnace, a
series of physical and chemical reactions within the furnace process, after a
smelting cycle, nickel pig iron will be tapped from iron mouth, slag iron discharge
skimmer, then, follow the iron ditch into the cast iron machine casting into cast
iron pieces, completing the whole process from laterite nickel ore into nickel 9%
nickel and iron.
Phase one of the project is planned to build two 80 m3 nickel iron blast
furnace, the layout referred to general arrangement.
Blast furnace feeding material and fuel mixed as required and unload to
blast furnace ore tank storage with a belt; molten iron flows directly to the fixed
hot metal ladle – casting machine-- nickel pig iron; Blast furnace ore tank
storage is single row trough with separate screening and weighing under the
trough; bast furnace applies oblique bridge lifting skip feeding, skip volume 1.2
m3; double bell type furnace top charging equipment; blast furnace body is half
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supporting shell structure, half a free-standing structure, nominal capacity 80 m3
blast furnace.
Three ball type hot blast stoves are adopted. Hot blast temperature ≥1100
℃, the exhaust temperature 250 ~ 300 ℃, combustion preheated air 150 ℃.
Dust removal system is equipped with gravity precipitator, pulse bag dust
catcher, net coal dust dustiness acuities is 50 mg/Nm3.
5.2 Process flow
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5.3 Blast furnace production technology index
The blast furnace production technology indicators are shown in table 5-1.
Table 5-1 Blast furnace production technology index
No Iems Unit Parameters Remarks
1 Volume of blast furnace m3 2X80
2 Utilization coefficient t/(m3.d) 0.9
3 Annual working days d 350
4 Fuel ratio kg/t
5 Coke ratio kg/t 2200
6 Coal ratio kg/t
7 Unit iron air consumption m3/t 7200
8 Furnace air Nm3/min 380 Ventilation volume 400Nm3/min
9 Furnace top pressure MPa 0.06
10 The hot air temperature ℃ 1100
11 The output of pig iron
The daily output t/d 140 Metal nickel 1.3 tonl
Annual output Ten thousands t/a 5
12 Slag yield Slag ratios 4500kg/t
The daily output t/d 140
Annual output Ten thousands t/a 5
13 Gas yield
Output of gas of unit pig iron m3/t 7700
Hour output of gas m3/h 1078000
14 Furnace durable years years 6
5.4Blast furnace main products and by-products
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The blast furnace main products and by-products are shown in table 5-2.
Table 5-2. Blast furnace main products and by-products
No. Items Unit Value
1 Nickel pig iron
Among them: nickel metal t/a ~44000
2 Blast furnace water slag (water content15%) t/a 264700
3 Blast furnace gas volume per hours Nm3/h 25000
4 Blast furnace annual gas volume
Among them: volume of hot blast stove 104Nm3/a
15000
10000
5.5 Blast furnace raw material
5.5.1 Raw material and fuel consumption (feeding amount)
Raw material and fuel consumption referred to table 5-3.
Table 5-3 Raw material and fuel consumption
No Items Ton iron unit
consumption(kf) Annual consumption (t/a)
1 Sintered ore 6000 ~27.3
Laterite nickel ore
(35% water) 1538 42
2 Coke 2200 11.1 (transferred 10%
powder included)
3 Quick lime 865 38925
5.5.2 Raw material and fuel condition
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Table5-5 Laterite nickel ore element (%)
Item Ni SFe H2O SiO2 MgO P CaO
Laterite
nickel ore ~1.08 10~11.7 30~40 35~45 <30 <0.01 <3.0
5.6 Main equipments of blast furnace system
5.6.1 Ore trough
All the feeding material (coke, sinter, limestone) are sieved. Each material is
set with separate weighing hopper. In order to make accurate weighing,
weighing hopper adopts three point weighed. Undersize of the feeding coke and
ore are transported by belt for comprehensive utilization. Returning tape
machine parameters: transport capacity of 5 t/h, outside mounted electric drum,
motor power N = 3.5 kW, spiral tension device (S = 500).
5.6.1.1 Ore trough layout form
Trough points on both sides of the diagonal bridge layout, the top level 10 m,
trough adopts steel structure with canopy on its top. Two for sintering ore bin to
the west and the east for two coke warehouse, a lime warehouse, a original ore
bin with 2.500 m platform used for place of coke, sinter screening equipment
and weighing equipment. l Material above the sieve fell into the trough the
corresponding main ore belt machine by vibration in weighing hopper after
weighing. Adoption of the three types of materials screening selects the mining
vibrating screen through the calculate for convenient equipment maintenance
and spare parts. Sieve can be according to the material particle size and
matching different mesh size of the sieve plate. Undersize material have powder
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storage hopper and transported to the bunker on the west side of coke powder
surge bin and the bin on the storage bin (powder storehouse and sintering ore
bin) regularly to the sintering mixing tank through the belt when it is full. Two
blast furnaces share a large oblique angle belt.
Materials feeding way is hoist oblique bridge, motor power 37 kw, hoist is 3.5
tons, frequency control of motor speed, skip volume 1.2 m3 fixed on the second
floor installation, first layer is set with the four pillars of the concrete, blast
furnace hydraulic station is placed at the first layer.
Main control room is in the blast furnace duty room, central control room,
located near in the pit, elevation of + / - 0.0 m on the floor. 5.5 m platform is set
on master control room with hot blast stove meter room, workers lounge,
instrument, etc inside. Blast furnace material hoist room is located on the upper
pit 5.50 m platform.
5.6.1.2. Process design parameters
According to the blast furnace smelting index calculation, all kinds of ore troug
tank volume capacity and storage time are referred to the table below:
Quantity Each trough
tank volume
Total effective
volume
Total amount of
ore storage
Total holding
time Proportion
Items
PIECE m3 m3 t h t/m3
Sintered ore 2 65.0 390 663 66 1.2
Coke 2 65.0 390 195 61 0.5
Lime stone 1 65.0 65 104 179 1.6
Original ore cabin 1 65.0 65 117 78 1.8
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5.6.1.3. Equipment level
Under trough batching and top feeding equipment adopts PLC programmable
controller automatic operation. At the same time when setting manual operation,
maintenance and accident near the machine operation occurs, weighing system
adopts the electronic sensor weighing funnel, a variety of materials weighing
automatic error correction.
Due to material dustiness, screening and transportation process middle dust
quantity is little, so this design does not adpot dust removal facilities.
Under the concrete floor, a small amount of dust can be water washing.
5.6.2 Blast furnace body
Blast furnace ontology is an important part of the blast furnace production
facilities, in order to adapt to the requirements of blast furnace smelting
strengthen requirement, the furnace body design adopted the mature and
practical technology.
5.6.3Blast furnace inner linings
Type of design in the blast furnace is the core of the whole nickel iron smelting
system, different material characteristics, properties, and depends on different
blast furnace smelting varieties of different type, especially for nickel iron
smelting of high, medium, nickel smelting, and ordinary smelting of pig iron
smelting or other types of products, there is a larger difference, its
characteristics are mainly iron ore is low, light bulk density, low strength, low
melting point of slag smelting, low viscosity, soft melting zone, adding a certain
amount of fluorite to reduce the viscosity of slag, etc. And the operation of the
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blast furnace is a difference, this design of the project distinguished from blast
furnace smelting of ordinary cast iron in the following aspects:
A, The blast furnace inside shape is stout, cooling mode can take the spray
cooling of the bof shell.
B, Large amount of blast furnace slag, requiring two set slag mouth and slag
height differing.
C, Slag viscosity is high, low soft melting zone needs more air pressure and
higher coke rate.
D, Because the nickel sinter dust is more, requiring environmental protection
dust collecting synchronously.
E, Design of blast furnace needs to choose more resistant to corrosion
refractories.
Blast furnace using coefficiency 0.9 t/m3·d.
Furnace main design parameters are as follows:
Sign Vu d D d1 H Hu/D Ventilation
number
Irion
mouth
Tapping
mouth
Unit mm 2700 3600 2700 11.6 3.22 82 79 8 1 2
5.6.3.1 Furnace main equipments
Furnace is half a free-standing structure, frame structure. Four pillars four
directions are evenly layed, but the iron slag not affected.
Wind, slag mouth device consists of large, medium and small set.
Furnace throat steel brick structure adopts one cast steel manufacturing.
Furnace is set 1 iron mouth; Slag mouth 2; Tuyere 8. Tumor detecting hole
6 on 3 layers.
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5.6.3.2 Furnace lining structure
Inside the furnace base: external with clay brick filled with carbon ramming
material.
Furnace bottom and hearth: using low porosity self baking carbon brick,
masonry masonry composite corundum ceramics.Iron mouth, slag mouth and
tuyere zone: combination of compound corundum brick masonry.
Bosh, belly and lower furnace body part: densed type clay brick masonry.
Furnace body upper part: leaching phosphate clay brick masonry.
5.6.3.3 Furnace body cooling
The lower part of furnace adpots shell spray cooling.Furnace body, furnace
waist outside the furnace spray cooling.
To protect the furnace top without bell equipment and gas dust removal
filter bag, the blast furnace gas sealing cover with water spray device is set at
the bottom, when the temperature of the flue gas is more than the set value,
cooling water shall be by mannual; The temperature is lower than the set value,
the water manually stops.
5.6.3.4 Blast furnace water flushing slag system
Two blast furnace shares a water slag line. Water slag pool is 30 meters
X12 meters with 12.5 meters 5 tons on single-girder crane,water slag can be
seized directly sent to the vehicle to out of the court. About slag, we also
designed the other two sets of dry slag processing system, when the slag
catching machine failed or no water, blast furnace dry slag disc and the cold
slag can be loaded away.
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5.6.3.5 Thermal detection
Furnace cooling water set temperature, flow rate and pressure testing; Top
set temperature and pressure detection; The furnace bottom and hearth
masonry set temperature detection. Various parameters by computer collection,
processing, storage and output, and the transfinite alarm
5.6.4 Blast top feeding system
5.6.4.1 Oblique bridge
Adoption of skip oblique bridge feeding, truss structure is used, oblique bridg
angle is about 60 °. Skip the effective volume is 1.0 m3, skip trip about 35 m,
oblique bridge is installed on the top platformφ 700 mm rope wheel.
5.6.4.2 Hoist room
Material hoist room is located in above the pit + 5.50 m the elevation on the
top of the chute, equipped with hoist, lifting speed 1.35 m/s, the power of 37 kw
ac frequency conversion motor drive.
5.6.4.3 Top feeding equipment
Adopt double bell top charging equipment. Controlled by electrohydraulic
push rod with large and small opening
5.6.4.4 Furnace top material detecting rod
Assemble with 2 sets of chain stock rod, symmetrical layout. Two sets of stock
rod hoist arrangement in the room.
5.6.4.5 Top pressure equalizing and radiation equipment
Topt pressure container set an equalizing equipmen, an equalizer using half
a clean gas. Equalizing valve and pressure relief pipe valve opening and closing
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adopts hydraulic transmission.
5.6.4.6 Top equipment hoisting maintenace facilities
Set manually hoist above the top of the hopper, gas descending pipe is
equipped with lifting point, top equipment can be lifted from the ground to the top
platform or installation position.
Blast top hydraulic station is located in the skip hoist room side. Blast top oil
lubrication station is located in the roof platform.
5.6.5 Tuyere platform and iron field
Tuyere platform and the tapping field is overhead cast-in-place reinforced
concrete structure with factory building cover, factory building cover using 3 mm
thick colored steel structures.
Slag field is equipped with one set of the 5 t bridge crane, span 13.5 m.
Molten iron flows directly from iron mouth to hot metal ladle after the slag
scraped, and then delivered to the foundry with 15 tons single-girder crane lifting
to the start pouring casting platform.
Water slag groove is at the other side of the blast furnace ore tank, all the
rushed blast furnace slag can be flushed into water slag as raw material or slag
brick.
Tuyere platform is equipped with one electric mud gun,one manual iron
mouth opening machine, two manual hanging blocking slag machine.
Iron mouth is in the field of iron on the location of the center line of partial
80, angle with the center line of the high and lows lag mouth ~ 900 and 1800,
the main iron ditch length 5.5 m, grade 8 ~ 10%.
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Blast furnaces, hot air stoves and bag dust removal adopt a centralized
control room.
5.6.6 Gas dust removal
Two gas sealing cover export tubes are set at the top blast furnace wtih
asending pipe, descending and gravity dust remvoal device.
Gravity precipitator adpotsφ4000 diameter, the upper is set with 900 mm
gas shutoff valve to cut off the gas when accident occurs.The upper gas shutoff
valve is set with a φ219 mm gas radiation tube. Each valve adopts manual
open.Gravity dust remvoal device adopts a DN350 electric discharging ball for
discharging. Blast furnace top are set with twoφ300 mm top tossing in valves
with manual drive hoist.Gravity dedust gas outlet radiation tube set a 300 mm
with a 300 mm tossing in gas valve by manual drive. Bag-type dedust adopts
outfiltering style bag dust removal, the tube body φ2800 mm and 118 pieces of
φ130 mm dust filtering bag with material Fluorine mae and density of 800 g/m2,
a total of five cylinders, each cylinder filter area is 289 ㎡, filtering load is 14.43
m3/㎡.h with nitrogen reverse blowing, nitrogen making machine power 55 kw,
two blast furnaces shares a nitrogen chamber, blast furnace bag dust goes to
tank bottom by motor vibration, stands after water, load by mannual.
5.6.7 Hot blast stove system
According to 3 rotary cutting type top burning ball type hot blast stove.
Main hot blast stove technical performance is shown in table 4-5.
Table 5-5 Ball type hot blast stove technology performance tables
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No. Items Unit Quantity Remarks
1 Hot blast stove seat number Set 3
2 Hot blast stove height m 15.141
3 Hot blast stove steel shell
inner diameter m 4974/4000 up/down
4 Regenerative chamber area m2 7.0649
5 Combustion chamber area m2 10.822
6 Pebble bed height m 5.8
7 Ball quantity of each hot
blast stove t 23+57 f60,f40
8 Each hot blast stove
heating area m2 3686
9 Blast heating area per m3 m2/m3 49.1 150Nm3/min
10 Amount of ball possession
of per blast m3 kg/m3 933 3 set
11 Heating area per m3 blast
furnace volume m2/m3 134 3 set
12 Hot air temperature ℃ =1100℃
13 Exhaust gas temperature ℃ 250~300
This system design considers:
Hot tuyere adopts pipeline brick masonry, burning mouth with phosphate
refractory castable precast bricks masonry or on-site pouring. Hot air pipeline in
brick pipes.
Combustion air adopts two blast furnaces, set three combustion fan (2 in
operation 1 for prepareation)
Hot blast stove chimney height 35 m, upper gas export 1 m in diameter.
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Hot blast stove is also set up the perfect testing instruments; two working
one sending system, hot blast stove is equipped with semi-automatic and
manual operation two ways hot blast stove adopts electric valve transmission.
5.6.8 Power system
Two blast furnace roos share a fan 2 in operation 1 for prepareation, all are
centrifugal blower, flow volume 400 m/min, pressure 1.7 Mpa, assembled to
1000 kw motor, frequency conversion start, the wind room 21 meters X18
meters, orbital plane 9 meters high. There are 10 tons of single-beam crane
above.
5.6.9 Slag treatment facilities
Slag processing system adopts the two share a high slag water system,
water flushing pool 30 meters X12 meters X3 meters, slag pool has a span of
12.5 meters above, 5 tons slag holding machine for the agriculture vehcle
transporting away. Close to water flushing pool is a 12.5 meters X6 m residue
muddy pool, the residue flushing after precipitation is for hot water pump
circulation use. Two hot water cinder flushing pump 1 in operation 1. When the
water pool failed, the blast furnace’s two respective spare water cooling dry slag
dics can be applied, dry slag after water will be loaded away.
Direct water flushing quench process, simple and practical. water can be
circulated.
Flushing quenches slage water: an average of 450 m3 / h, maximum 750 m3
/ h.
Slag water ratio: 1(7-10)
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Water pressure: 0.25 MPa
New wate additonr: 0.7 m3 / ton slag
Residue pools is set a gantry crane above (Q = 5 t, Lk = 13.5 m), water slag
transported by car.
5.6.10 Cast iron workshop
A horizontal length of 30 m double chain belt iron casting machine for 2 x
80 m3 blast furnace, cast iron machine production capacity of 400 t/d
5.6.11 Cast iron machine technical performance
Double chain belt iron casting machines are for 2 x 80 m3 blast furnace,
cast iron machine production capacity of 400 t/d, sprocket center inclined 30 m
long.
Hot metal in blast furnace production will flow directly into the hot metal
ladle, the craped slag flows into the cast iron machine after iron groove and then
into hot metal ladle and then pours into the double chain belt roller type casting
machine into pieces. The hot metal in the mould attaching to the chain belt
moved to storage tank side by side; mold on the chain belt of three consecutive
area with spray cooling is made to "pig iron"; Iron blocks in the cast iron machine
chain belt end shall fall into iron chute, falling into a cast iron machine export
iron library, as ingot completely cooled, the library door will directly open, the
iron shall fall to the skip.
Pig iron piece shall be transported to finishing, packaging workshop,
cooling, storage, set aside. To make the cast iron is easy to separation from the
mold, before the returning to machine casting, empty chain belt mold under the
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machine shall be sprayed lime coating. Cast iron mold spray system is equipped
with lime, slurry material library, raw material transported by car and
proportioned with water and sprayed to iron mold.
Under the nose operation platform, when molten iron is casting iron and
slag water spray cooling, large particles shall be collected with iron slag box,
hoisted and sent out.
After cast iron mould sprayed slurry, each chain belt is dryed by waste heat
air removing the water casting exists in mold. When cast iron machine theis
initially open, the mold, iron flow groove are dried by drying system. Drying
system uses coke oven gas as fuel.
Cast iron machine has a cooling system. Spraying system can cool liquid
iron, clean the machine. There is also an iron slag cooling system, to ensure the
safety of the overflow when filling mold iron. Cast iron machine area water
supplies is from circulating water pump station, cooling, spray iron slag,
drainage after washing, and shall be drained through the pipe to the tank and
circulating pool.
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Chapter VI Lime kiln
6.1 Lime kiln process introduction
Lime kiln is the use of blast furnace gas to make limestone into lime
calcination production process between 850 ~ 1200 ℃. Lime is mainly used to
remove excess water in the wet laterite nickel ore. Lime kiln has shaft kiln, rotary
kiln, sleeve kiln, myers kiln. After comprehensive consideration of blast furnace
smelting characteristics and investment, we adopted vertical efficient active lime
kiln developed by ourselves, adopting the positive pressure operation of blast
furnace gas calcining kiln. Lime is the fusion agent of blast furnace and sintering
machine production can also be used as a strong water absorption function for
laterite nickel ore dehydration. Its main component is calcium carbonate
(CaCO3), limestone and lime (CaO), CaO as the main ingredients of lime, the
basic principle is the high temperature decomposition of calcium carbonate in
the limestone into carbon dioxide and calcium lime, reaction equation is CaCO3
= CaO + CO2-42.5 kcal. Its process is that the qualified particle size (40 ~ 80
mm) of lime stone through screening measure to the car by the hosit into the
hopper on the lime kiln, through preheating it is decomposited from 850 ℃ and
finished calcination at 1200 ℃, ,after cooling it is discharged into the chain plate,
through high temperature belt conveyor to quick lime material library, bottom
feeder feeding by lime library, then it is crushed and processed into 3 mm quick
lime powder by hammer for preparation of sintering by twisted dragon conveyor
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to bucket elevator to lime storage memory.
6.2 Raw materials
Item Specification Consumption
per hour
Daily
Consumption Daily output Origin Note
Limestone 40~80mm 9T 222.4T Indonesia
Gas 7500m3 180000m3
Quick lime 120T Daily
6.3 Proposed scale
Plans to build a 150 m3 lime kiln,daily output of 120 tons lime.
6.4 Installed capacity
Low pressure installed capacity of 380 kw.
6.5 Main technical indicators
Effective volume
Limestone consumption
Daily output
Gas consumption
Burnt rate Effective height
Inner diameter
Active degree
150m3 1.8 120 1500m3/t <10 26m 3m >280
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Chapter VII Public auxiliary system
7.1 Supply and distribution facilities
7.1.1 Design overview
(1) Design basis and standards
This project is based on the electrical design process and related
professionals to provide electricity load conditions and Indonesian nickel iron
integrated engineering technology basic information, in accordance with the
electrical design manual factories and related regulations of design. Design
standards and specifications are:
Power supply and distribution system design specifications (GB50052-95)
Specification for design of low-voltage distribution (GB50054-95)
Power device of relay protection and automatic device design specification
(GB50062-92)
Up to and including 6.3 KV substation design specification (GB50053-94)
The 35-110 kv substation design specification (GB50059-92)
3-110 kv high-voltage power distribution equipment design specification
(GB05060-92)
Specification for fire protection design of buildings (GB50016 2006 edition)
Building lighting design standard (GB50034-2004)
Building lightning protection design specification (GB50057-94, 2000)
AC electrical devices over voltage protection and insulation coordination
(DL/T620-1997)
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Industrial and civil electrical device of over-voltage protection design
specification (GBJ64-83)
Power supply and distribution system design specifications (GB50052-95)
(2) Scope of design
According to the process, the project includes raw material plant, blast
furnace, sintering, lime kiln and utilities and auxiliary facilities for living. Four
sections of dynamic power supply, lighting, lightning protection and outside plant
cable layout, power supply path, road substation electrical and the process of
distribution room are designed.
7.1.2 Load calculation
Electric power load and annual electricity consumption
Installation capacity 5862.6KW;
7.1.3 Power supply
A) 35kV high pressure will be total input wire, which is turned into a 10KV
voltage for blast furnace plant and sintering workshop, 6 circuits of 10KV for lime
kiln, 2 lines sent to the blast furnace, 2 sent to sintering workshop workshop,
lime kiln 1 line, the other 1 loop 10KV circuit provides the power supply for public
auxiliary system.
B)In order to improve the power factor, this project adopts the high and low
pressure compensation at the same time, electrostatic capacitor compensation
is assembled for 10kV bus according to the load conditions, automatic reactive
power compensation device for 0.4kV side capacitor; low voltage power factor
compensation is to 0.94, 10kV side power factor after compensation reaching
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0.94.
C) High voltage distribution mode of the whole plant is radiation type, using
the high voltage cable line laying in cable bridge in and buried in two ways.
7.1.4 Electric drive
(1) Low voltage power distribution
Low-voltage distribution adopts 380/220V, main distribution mode is radial
and chain mode when individual power is supplied, typically linking three
electricity equipment, electricity is sent by the low voltage switchgear and power
distribution box in the workshop, the section distribution of indoor equipments.
For mobile devices is by sliding contact line or soft cable power supply. Adopts
low-voltage circuit breaker as a short circuit protection device, and serve as
protection equipment with motor protection.
For blast furnace, sintering, lime kiln section production system according
to the technological requirements, the programmable controller system (PLC
system) for interlocking centralized operation and remove after the interlock
machine by single operation two kinds of operation mode is proposed, single
operation is only for inspection and test. Subsection (alternate) starting way - at
regular intervals starting a few (or a) motor are for the large capacity motor large
capacity or continuous production system in order to solve the problem of large
starting current.
(3) Motor starting and speed regulating mode
According to the technological requirements and the specific circumstances,
most of the equipments of this project adopts full pressure start, for more than
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75 kw motor start-up, soft start is proposed in order to solve the problem of large
starting current.
7.1.5 Line
Linines mainly are cable, copper core and control cables are for power
cables; computer cable is copper shield cable.
Cable laying mainly is cable tray. Some outdoor consider buried lines, and
some indoor line wear pipe buried, along the wall, Ming fu such as beam, and
laying in the hanging tent or electrostatic floor.
Outside power cables are mainly along the pipe gallery cable tray, parts
used in armored cable directly buried laying.
7.1.6 Lighting
In view of the low voltage power distribution system of this project is
380/220V neutral point grounding system directly, so the lighting and power
shares a transformer. The lighting power supply isinleted by nearest line.
Lighting network voltage is 380/220V three phase and four wire system;
Inspection lighting voltage is 36V, but in the special wet place for 12 v.
In the rules and regulations of main production workshop and place,
temporary work lighting, safety and emergency lighting for evacuation and the
technological requirements of places local lighting and lighting are set. Factory
road lighting and obstacles lighting chimney are according to the specifications.
7.1.7 Lightning protection and grounding
According to the relevant provisions of the specification for the second
category of industrial building and structures, prevention measures considering
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the direct ray and induction lightning are adopted. For the third type of industrial
building and structures the lightning proof measures are considered. The
chimney is considered the measures to prevent direct lightning.
Due to 10 kv power distribution system for the neutral point grounding
grounding system, its distribution equipment and electrical equipment exposed
conductive parts shall be protective grounding, grounding resistance is not
greater than 4 O. And 0.4 kV power distribution systems neutral point grounding
directly, the distribution equipment and electrical equipment exposed conductive
parts shall be in accordance with the TN or TN - C - S - C system through the
PEN line or PE line for protection grounding, grounding resistance should not be
greater than 4 O. The coexistence of high and low voltage substation adopts the
common grounding device, grounding resistance less than 1 O.
Every workshop or building repeat grounding should be installed at the
entrance of the power supply.
Computer system is set up a separate system, the grounding resistance
value set according to requirements.
7.2 Water supply and drainage facilities
7.2.1 Overview
This design for the newly two sets of 80 m3 nickel iron blast furnace, 150 m3
lime kiln, 45 m2 step sintering and affiliated facilities, design the production, life
and fire water are according to the requirements for the manufacturer built to the
corresponding points.
7.2.1.1 Design basis:
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(1) Design basic data provided by the project design party;
(2) Engineering construction design specification or national standards;
Drinking water health standard (GB5749-2006)
Outdoor water supply design specification (GB50013-2006)
Outdoor drainage design specification (GB50014-2006)
The code for fire protection design of buildings (GB50016-2006)
Specification for design of extinguisher Settings (GB50140-2005)
Building water supply and drainage design specification (GB50015-2009)
Wastewater discharge standard GB8978-1998 (98)
(3) Water supply and drainage relevant professional information and
requirements;
Water supply quantity, water quality and water pressure, water supply
standards
Production water is according to the requirement of process.
Worker living water: 30 l/person. D
Shower water: 40 l/people. shift
Canteen water: 15 l/people. meal
Water supply for domestic and drinking water hygiene standards should be
consistent with existing national standards of water quality standard of living and
drinking water sources (CJ3020); Drinking water should be consistent with
existing national standards "drinking water health standards" (GB5749-85).
Vehicles wash water: 400 l/set. d
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Road and green water: 1.0 to 1.5 L/m2.time
7.2.1.2 Water source conditions
1) New water for production: provided by the factory supply and hand over
point 1 m outside the new facilities. Water volume, water pressure should meet
the requirements of the project production, fire proof water.
7.2.1.3 Water supply requirements
1) Water quality requirements
Industrial water quality requirements for circulating water system : PH 7 ~ 8
Suspended solids acuities ≤20-30 mg/l
Hardness of about 100 mg/l or less (CaCO3)
Total soluble solid acuities=500mg/l
Drinking water quality must conform to the national standard of
GB5749-2006 "drinking water health standards".
2) Water pressure requirements
Production new water acuity =0.30 MPa
3) Water engineering and indicators
According to the process of the requirement of water quantity, water quality,
water pressure, water temperature, water quantity (the users see table below).
According to the process and the provision of relevant professional water
technical requirements, design of the system are:
Net water circle supply system
Turbidity water circle supply system
Production of the new water system
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Life new water systems
Fireproof water supply system
Production, living water supply and the displacement is as follows:
Factory total water consumption of 494 m3 / h, the circulation of water is 486
m3 / h; Added new 35 m3 / h, water production drainage amount 2.0 m3 / h. Life
water 4.0 m3 / h, dischargement 3.0 m3 / h.
Engineering major production and living water quantity, water quality, water
pressure, water temperature requirements are detailed in the table below.
Table 7.1 1 Water scale
Water comsuption m3/h Water inlet and outlet temperature ℃
No Customer Customer Qty
Customer
Qty at the
same time Unit comsuption
Total comsuption
Working pressureMPa
Inlet Outlet
Water utilization system
Water quality requirements
1 2 3 4 5 6 7 8 9 10 11
1 Raw water system 1 1 6 6 0.3~0.4 Interval
Circulating water
3 Step sintering system 1 1 66 130 0.3~0.4 =35 =55
Continuous
Circulating water
5 Blast furnace system 1 1 400 400 0.3~0.4 =35 =55
Continuous
Circulating water
6 New water supplement 60
7 Subtotal 542
7.2.2 Net circulating water system
Circulating water system of this project is the open loop system. The
cooling process is indirect cooling, water is not contaminated, only water
temperature is increased, circulating water treatment system is set. Returning
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water goes through pipelines, the superficial heat pump station, cooling tower
and cooling pump to the cold pool, and then ready for the use by the pump
pressure.
To ensure the long-term stable operation of circulating water system, pump
station is assembled with dosing room, dosing system adds the anti-corrosion
and scale inhibitor and algae fungicidal reagent and the number of species to
the system, after system operatiing, the manufacture entrusst the relevant units
of to test water quality.
This system consists of circulating water pump, cooling tower and the
corresponding for the return water pipe.
7.2.3 Slag water flushing and turbid water circulating supply system
Turbid circulating water system includes blast furnace slag water flushing
circulating water and raw materials, coal washing, sintering system circulating
water system, the points above are as follows:
(1) The slag before theblast furnace is turned into water slag after slag
granulating device, sedimented, and grabbed, stored in slag field by car. Slag
flushing water sediment pool, pool, clear water reserviors, flushing water pump
cycles.
(2) Comprehensive utilizations of resources, raw materials, coal washing,
sintering workshop washing the floor with water, muddy water shall improve
labor environment. Each workshop floor water rinsing is interval in regular
concentrated water washing way.
Rinse floor water contains a lot of dust, grit chambers are set in the main
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building will collect sewage water i n order to prevent debris into the tank of
mixed with sewage. The sludge within workshop catchment grit bottom adopts
mannual cleaning recovery and comprehensive utilization. After grit precipitation,
the supernatant fluid is sent out to the outside circulating water pump station and
turbid circulating pool, pressure is added by turbidity circulation pump washing
users as recycled water for shop floor.
7.2.4 Production, living and fireproof water supply system
(1) Water for living is sent through campus network directly for each
workshop of the project, office building, etc.
Plant water standard is according to 30l / person.shift, daily water
consumption is about 7.0 m3 (including shower water), the average water
consumption is about 2.0 m3 / h, overhaul, inspection tests the average water
consumption is 1.0 m3 / h, other water not considered 1.0 m3 / h. Life water total
is on average 5.0 m3 / h.
(2) The production new water total is 35 m3 / h. Production of new water
and fire water share a network system.
(3)According to the code for fire protection design of buildings
(GB50016-2006) regulation: smelting workshop belongs to D class plant, the
design of a building fire resistance is according to the secondary design,
workshop fireproof consumption is 15 l/S, using 5 pieces nozzle at the same
time; Factory fire calculated at the same time a fire and water is 20 l/S, fire
lasted for 2 hours, 252 m3 water is storaged in the pool. Added new water
production, fire will be provided by factory production new water supply
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pipelines.
According to GB50140-2005 "code for design of extinguisher disposition in
the transformer room, office, such as portable powder fire extinguisher are
demanded in accordance with the provisions,
7.2.5 Production drainage system
The drainage engineering adopts sewage and rainwater diversion system.
(1) The circulating water system sewage (2 m3 / h), no pollution,meets
water quality standards.
(2) The life water displacement is 3 m3 / h, fecal sewage after septic tank
treatment gravity is sent to the factory sewage treatment station, buried sewage
treatment concords with the emissions.
7.2.6 Safety measures of water supply
(1)Circulating water pump station is set with two way power supplies,
power supply reliability is not lower than smelting equipment requirements.
(2) All the pumps are equipped with spare pump, pump and standby pump
automatically switches and work.
(3) Water pump station to separate two main water supply pipe network on
the outside of the workshop layout into a ring, for support each other when in an
accident, from the main water supply pipe branch to the furnace water supply
system. A drain road has a discharge gas measures.
(4) According to "specificaiton for fire protection design of buildings"
GB50016-2006 outdoor building production fire hydrant and set the ground
pipeline system in order to meet the requirements of factory fire, every hydrant
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protection radius is less than 120 meters, according to the rules set fire hydrant
and fire extinguishing equipment, indoor fire water is 15 l/s, outdoor fire water 20
l/s. The production sharing network, fire control system can meet the
requirements of fire water.
(5)According to < specification for design of extinguisher disposition >
GB50140-2005, the main factory building, high and low voltage transformer
room constructionare set with mobile fire extinguishing equipment, etc.
Water supply and drainage treatment system are set with circulating water
pump station, circulating tank, FRP cooling tower, integrated water processor,
etc.
7.3 Heating facilities
7.3.1 Overview
To meet the requirements of ironmaking production, a new thermodynamic
facilities as follows: the blast furnace blower station, within the scope of the red
line of air cooling pipe, steam pipe and compressed air pipe, etc.
The blast furnace blower station design includs machine, suction chamber,
oil system, control room, etc.Two centrifugal blowers are inside of the station; a
complete set of motor, gear box, coupling, oil system, silencer, air filter, valves,
piping system, the base;automatic control system, electric control
system.Among them, the external piping, power supply are espectively lined
into the external part of the design of water supply pipe network, power supply
and distribution facilities and water supply and drainage facilities.
7.3.2 Blast furnace blower station
To meet the requirements of blast furnace for the wind, new blast furnace
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blower station shall be built. Wind facilities adopt electric centrifugal blower as
the blast furnace blower unit. Two common blast furnace blower station, one in
operation and one for preparation, C - 400 centrifugal fan, motor power 800 kw,
variable frequency startup pressure pneumatic mode.
1) Blast furnace blower design conditions
Weather conditions: see the general.
Blast furnace operation conditions are shown in table 7.3-1.
Table 7.3-1 Blast furnace operation conditions
No Items Unit Value Note
1 Blast furnace volume m3 80
2 Annual working days Days 350
3 Utilization coefficient k t/m3 d 0.9
4 Coke rate kg/t 2200
5 Blast top pressure Pd MPa 0.06
6 Wind volume inlet MPa 0.098
2) Selection of blower
According to blast furnace operation parameters, C400-2.0 type centrifugal
blower and the air volume of 400 m3 / min, 98 kpa, booster fan speed 2960 r/min,
motor power 800 kw are adopted. Its performance can completely satisfy the
fixed air volume, air pressure of blast furnace smelting operation, operation area
in high efficient area meet the scope of operation, the highest efficiency can
reach above 90% with fast operation, easy operation, compact structure, good
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regulation performance, low noise advantages.
Twe electric centrifugal fan for blower station, one in operation with one for
preparation
Technical parameters of blower:
Model: C400-2.0 centrifugal fan;
The inlet flowvolume: 400 m3 / min (normal)
Pressure elevation: 98 kpa;
The motor power: 800 kw;
3) Processes and equipment level
Air suction hood from high suction, suction duct - wind filter chamber-end
flowmeter- throttle valve-suction silencer - blower inlet pipe - pressure - blower
outlet pipe - exhaust muffler- check valve-electric valve - air outlet - to process
Exhaust muffler- surge valve -vent muffler-discharged into the atmosphere.
4) Blower station layout
Blower station adopts single layer layout.
Main factory building span is 12 m, a total of four pillars 24 m, is apart from
the general factory building bottom chord elevation 11.5 m, crane beam rail
surface elevation 10 m.
Control room is opposite to two blowers, the span 5.0 m and 12 m width.
low voltage distribution room is set with the control room.
Air filter chamber span is 4 m, 18 m wide, located in the bottom.
In order to reduce fresh air blower noise impact on the environment, the
design adopted emptying silencer, duct connected to mute the back into the
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atmosphere.
In order to prevent noise harm on human body in the main workshop
equipped with soundproof room, the operator can be observed in the control
room operation condition of the blower.
All waste oil is filtered, recovered after separation, no emissions.
7.3.3 Compressed air facilities
Compressed is mainly used for air purging, instrument, pneumatic valve,
etc., the operation referred to the table below. Compressed air consumption are
shown in table 7.3-2.
Table 7-2 Compressed air consumption
Consumption (m3/min) No Customers
Ordinary Oil/water free (MPa) Rule Note
1 Blast furnace system 5 4 0.4~0.6 Interval
2 Sintering system 6 4 0.4~0.6 Interval
3 Raw material system 5 3 0.4~0.6 Interval
4 others 2 2 0.4~0.6 Interval
Subtotal 18 13
Included time use at the
same coefficient of 0.8 14.4 10.4
Included in the network
loss coefficient of 1.1 15.8 11.4
Total 27.2
The compressed air total consumption is 27.2 m3 / min, pressure is 0.4 ~
0.6 MPa.According to factory comprehensive consideration, unified set air
compressor station supply can meet the needs of this part. Two EE160-9 screw
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air compressor, including 1 in operation and 1 for preparation. Air compressor
exhaust pressure: P ≥0.85 MPa, Volume flow, Q = 30.5 m3 / min. Motor power:
160 kw.
Compressed air post-processing device adopts the following process:
EE160-9 screw air compressor - class C centrifugal oil filter- A level micro oil
mist filter- micro heat regenerative adsorption dryer- T primary filter. Choose C,
A level 2 filters respectively, single processing capacity filter: 34 m3 / min.
Choose two micro heat regenerative adsorption dryers, single dryer air capacity:
35 m3 / min, the heater power is 16KW. Choose 2 sets of T primary filters, the
processing capacity of a single T primary filter: 34 m3 / min.
The compressed air pipeline adopts the seamless steel pipe, pipe material
with ordinary carbon steel tube, conveying compressed air with no oil or water
pipe should be passive. In each of the set to cut off the gas main valve, pressure
gauge and flow meter. Compressed air pipe take aerial installation is according
to the pipeline to set square compensator absorption pipeline thermal
expansion.
7.4 Ventilation and dust removal facilities
7.4.1 Design basis
"Integrated atmospheric pollutant discharge standards" (GB16297-1996);
The atmospheric pollutants emission standards of industrial furnaces
(GB9078-96);
The iron and steel industry dedusting engineering technical specifications
(HJ435-2008);
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"The standard of noise at boundary of industrial enterprises"
(GB12348-2008);
Health standard for design of industrial enterprises, GBZ1-2010);
。
The process shall provide the entrusted commitments.
7.4.2 Overview
Ventilation and dust removal design content includs 2sets of 80 m3 blast
furnace workshop dust removal, 2 x36m2 step sintering workshop dust removal,
coal dust removal and ventilation.
7.4.3 Dust removal
7.4.3.1 Ssintering workshop dust removal
Sintering workshop removal mainly considers the finished product
screening system, the ratio of fuel system using the atomized water way to
reduce dust.
1) Fnished product screening dust removal
Finished the whole grain dust removal screening system is mainly
composed of sintering product grading the whole grain sevie machine and
material tape machine dust producing drawing points in the process of transport.
Dust removal system total air volume of 15 x 104 m3 / h (conditions), long bag
low pressure pulse bag filter is adopted, filter area 2500 m2, filtering wind speed
1.0 m/min. Dust removal efficiency 99.5%, The clean gas emissions of dust
concentration is less than 50 mg/m3. Anti-static bag filter, moistureproof and
heat-resistant glass fiber needled felt are the materials. Dust removal fan air
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volume 15 x 104 m3 / h, pressure P = 3500Pa, motor power 55 kw, two sets.
Dust gas purifed by bag filter according with the standard will be discharged into
the atmosphere.
7.4.4 Ventilation
1) All subjected to high temperature radiation inside the main building work
site adops the local supply air cooling measures in order to improve the workers
operating conditions, mobile axial flow fan is set up.
2) In order to ensure the normal operation of electrical equipment,
mechanical ventilations are set in the place such as substation, high and low
voltage substation low noise axial flow fan with to ensure that electrical
equipment running heat can be ruled out in time and the equipment operating
environment temperature in a safe range, avoid malfunction caused by high
temperature.
3) Air conditioning in the control room setting cabinet to ensure the normal
operation of instrument control room equipment and improve the environment of
instrument control room temperature so as to ensure the normal operation of the
safety of the control equipment.
7.5 Inspection test
7.5.1 Inspection test
7.5.1.1 Design principles
A test center is design in the company. A water quality inspection room set
up In the company's water treatment station
7.5.1.2 Inspection test center
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The main tasks arer:
(1) Responsible for incoming raw materials, fuel quality spot check and
acceptance of work, time provide smelting factory with charging the original, and
chemical composition of fuel;
(2) Responsible for the factory product chemical composition index
appraisal, issued the product certificate, and the test data to guide the smelting
process;
(3) Responsible for the operation of slag and other projects in the analysis
of test work.
(4) Chemical analysis chamber, raw material and fue, and the chemical
composition of the finished product and slag sample analysis and some physical
properties of test tasks.
The compositions of inspection testing center are:
Sample preparation chamber: raw material, fuel, gas, finished product, slag
sampling, sample preparation, etc.
Balance and color chamber: the weight of the sample analysis to provide
reliable data and colorimetric analysis.
Electrical heating chamber: sample heating, drying, fixed carbon sulfur
analysis.
Chemical analysis chamber: original, fuel, gas, and the chemical
composition of the finished product and slag sample analysis and some physical
properties of test tasks.
Metallographic chamber: take sample, zoom analysis and radiation.
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Spectrum chamber: ingredients precise analysis of raw materials and
finished products.
Inspection test center major equipments: jaw crusher, sealed splitting
device, standard vibration sieve machine, mixed prototype sample, box-type
resistance oven, electric drum wind drying oven, electric arc burning furnace,
carbon sulfur instrument and horizontal metallographic microscope, digital
camera, damping balance, standard scales, photoelectric colorimeter,
electro-optical analytical balance, atomic absorption spectrophotometer, atomic
fluorescence analyzer, domestic spectrometer, ventilation ark.
Inspection test center is independent single building, wide area: 12 m * 33.6
m * 2 layers≈806 m2. According to the production need to adjust the working
system.
7.5.1.3 Water quality inspection room
Water quality inspection room mainly undertake the turbidity of water quality,
hardness, PH value of various examination, monitoring laboratory analysis of
water of the introduction of water, living water system, net circulation system,
turbid circulating water system,as to guide the processing of water everywhere.
Water quality analysis laboratory isintegrated at water treatment station.
About 18 m2.4 cshifts, 3 operating duty
Main equipment: UV spectrophotometer, turbidity meter, PH meter, sodium
ion concentration meter, infrared is metering device, etc.
7.6 General layout
7.6.1 Overview
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1) Site survey and the surrounding environment
The project site is in eastern Java Island, in line with the requirements of
local industrial development planning.
2) Hydrological geology and landform
Project is proposed at flat site area, the ground elevation height of 2 ~ 3 m,
belonging to basic stability region.
The factory foundation is mainly for the quaternary alluvium, venue is hard
soil, with soil type category Ⅱ classes; Soil layer from top to bottom are clay,
silt, silty clay, silt sand,and silt soil, a total of five layers, its standard capacity
between 200 ~ 250KPa, upper foundation has better strength, the main building
and structures adopts artificial foundation. The crustal stability within factory
district area is good, significant activities of fracture structure not found, bad
engineering geological phenomenon does not exist in the factory, the area
belongs to relatively stable geological body. Comprehensive decision, therefore,
the proposed site area is stability of building field, no soft soil, suitable for
building.
From the survey and data analysis, uniform distributions of foundation soil of the
area, stable horizon, and silty clay are good stability. The building site categories
are soft soil. According to the Indonesia seismic intensity zoning map (2000),
the Laterite mineral resources basic earthquake intensity is 6 degrees, designed
basic earthquake acceleration is 0.50 g, designed earthquake is grouped to the
second group. Simple hydrogeology in the factory district, groundwater types is
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quaternary pore water, buried depth of the groundwater table is generally 3.5 ~
4.5 m in range of 2.0 ~ 3.0 m, the highest water level depth is1.5 m. Air
precipitation is the water supply, the ground evaporation as the main discharge
way. Ground water of the factory area is weak ~ moderately corrosive to
concrete.
New factory land basic earthquake intensity is 7 degrees.
The factory covers an area of about 23.99 hectares (359.85 acres).
3) Climates conditions
Refer to the general.
4) Lands for projects construction
The factory covers an area of about 23.99 hectares (359.85 acres).
7.6.2 General layout
1) General layout principle
According to the process scheme, construction site specific conditions such
as topography and the surrounding environment, in order to make general
layout is reasonable, the design should follow the following principles:
(1) To be fully combined with the existing terrain, adjust measures to local
conditions and project general plan transportation design, and appropriate
development conditions.
(2) To be reasonable compac layout, short transportation lines smoothly under
the condition of reasonable process flow and transport.
(3) Auxiliary facilities as possible to be merged, multilayer arrangement, total
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plane layout line as far as possible in a single trench to save engineering
investment as to meet the production process and environment protection.
(4) One time total planning, construction by installment.
2) Main production facilities
The main engineering production facilitiesincludes: raw material field,
sintering production,blast furnace ironmaking production area, linme kiln
production, testing laboratory, the worker bathroom and dining halls, office
buildings and other facilities.
3) General layout
According to the design principle, combining with the status and
environment site condition, the general layout plan is designed. Technological
scheme, road connection condition, energy medium contact position and the
main production facilities, general layout scheme are as follows:
Factory comprehensive administrative zone is located in the middle of
campus on the north side with office building, canteen, testing center, sewage
treatment station.
Production zone (first phase) is located in the south area of the
comprehensive administrative from west to east, in turn layout are: repair
material (reserve), raw materials, sintering workshop, blast furnace ironmaking
workshop.
Detailed arrangement refers to general layout.
7.6.3 Vertical layout and rainwater
Based on the existing terrain characteristics to meet the needs of
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technology, the vertical design considering adopts flat slope project.
The rain insider of the site will be collected to the open trench and
discharged to the nearby river.
7.6.4 Transportation
1) Transportation capacity
According to the engineering design of annual output of 50,000 tons of
nickel pig iron scale, the total capacity of 810,000 t/a,in which 550,000 t/a shall
be transported in and 310,000 t/a shall be transported out. The main
commodities of laterite nickel ore, quick lime, limestone, etc. shall be
transported in, and the finished product nickel pig iron shall be transported out.
2) Ttransportation mode selcetion
A factory is locatied in the islands coastal, near the port, very convenient
location for sea and land traffic.
Therefore, the design considerations off-site transportation is by sea
continental combined with truck transportation, transportation inside of factory
can be motor transport.
3) Road design in the factory
This project by considered the car traffic factors, such as new roads for the
main road, the road, road and workshop approach road, the roads width are
12.0 m, 9 m respectively.
Factory is type highway concrete pavement road.
Road design calculation load are carlevel 20, calculating the load trailer
truck level 100.
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The specific layout refers in the general layout.
7.6.5 Safety, greening
1) Safety
New roads are designed according to "Industrial enterprise factory in
railway, road transport safety regulations GB 438794", "Factory and mines road
design standard" GBJ 2287 requirements.
2) Greening
To beautify the environment, reduce pollution, improve working conditions
and create a good production environment for workers, planting trees on both
sides of the road shall make full use of space and scattered in plant area and
above the site of the greening of buried pipeline. Greening land area is about
44,000 m2, green land rate of about 18.35%.
7.6.6 Main technical and economic indicators of general plan and
transportation
The main technical and economic indicators are shown in the table below
7.6 - 1.
Table 7.6 - 1 the main technical and economic indicators
No Items Unit Quantity Remarks
1 Factory area covering 104m2 26.26 393.70 acres
Living zone 104m2 1.37 2 Of which: raw materials
processing and storage area 104m2 5.1
3 Construction area coefficient % 46.98
Ttotal amount of road 104t/a 86
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transportation
transport in 104t/a 55 4 Among whcih
transport out 104t/a 31
7.7Environmental protection and comprehensive utilization
7.7.1 Project overview
The project is a nickel iron about 50,000 t (products containing nickel 10%),
the main construction contents include raw materials field, 52 m2 sintering
machine, 2 x 80 m3 blast furnace and the corresponding casting, power supply
system, water supply and drainage system, environmental protection facilities
and fire safety facilities, etc.
7.7.2 Environmental protection standards
1) By China standards, are as follows:
"Iintegrated atmospheric pollutant discharge standard" (GB16297-1996)
class two table 2;
Atmospheric pollutants emission standards of industrial furnaces
(GB9078-1996) class two;
Integrated wastewater discharge standard (GB8978-1996) class one;
Iron and steel industrial water pollutant discharge standard "(GB13456-92)
class one;
Standard of noise at boundary of industrial enterprises (GB12348-90)
industrial Ⅲ class.
7.7.3 Main pollution sources and pollutants and control measures
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7.7.3.1 Atmospheric pollution sources and pollutants and control measures
2) Sintering system
(1) Sintering machine head electric dust removal
During the process of s intering machine production, raw material and fuel in
the material bed combustion produces a large amount of gas containing dust
(about 140 ℃ )in the sintering machine head sintering, the design adopts
bedding base dawing ventlation sintering process, the nose dust concentration
in flue gas shall be controlled under 4 g/Nm3. Ash ingredient are Fe2O3, CaO,
SiO2, Al2O3 and MgO, etc. Two muti-pipe filter purification is adopted, flue gas
dust concentration after purification is < 50 mg/m3, exported outside through the
height of 60 m, chimney diameter of 3 m. The collected dust can be used as iron
recycle materials.
(2) Finished product screening dust removal
Finished product dust removal system is mainly composed of sintering
product grading screening machine and material tape transport dust points.
Dust removal system total air volume is 25 x 104 m3 / h (conditions), with the
long bag low pressure pulse bag filter, dust removal efficiency 99.5%, after
filtered the emission gas dust concentration is less than 50 mg/m3. Dust gas
purified by b bag filter shall be discharged into the atmosphere.
(3) Fusion agent and batching dust removal
Batching dust removal consists largely of raw materials, fuel and flux
materials mixing tank produced in the process of unloading, transshipment point.
Fuel crushing dust removal is mainly composed of crushing and screening
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machine and material tape transport drawing ventilation dust removal are set in
the process of producing dust points.The two point of dust removal system are
combined with total air volume of 15 x 104 m3 / h (conditions), adopting the long
bag low pressure pulse bag filter, dust removal efficiency 99.5%, the cleaned
gas emissions dust concentration is less than 50 mg/m3. Dust gas through bag
filtered discharged into the atmosphere.
(4) SO2 emissions
Sintering raw material containing sulfur content, pollution is caused by SO2.
Design with low sulfur raw materials to reduce SO2 in flue gas composition, and
can be lower than GB9078-1996 class two limit of 2000 mg/Nm3, directly by the
chimney emissions standards.
4) Blast furnace system
(1) Blast furnace feeding system
Blast furnace ore tank, storage feeding system tape machine,
transportation, unloading groove mouth, groove under the screening facilities in
the operation produce the dust.
Blast furnace trough setting, storage of all dust point are installed dust hood
of dust removal facilities, drawing ventilation capture facilities, the total air
volume of 15 x 104 m3 / h (conditions), adopting the long bag low pressure pulse
bag filter with dust removal efficiency 99.5%, after filtered the emission gas dust
concentration is less than 50 mg/m3. Dust gas purified by b bag filter shall be
discharged into the atmosphere.
(2) Blast furnace gas
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Blast furnace ironmaking generate a lot of gas containing CO and other
dust pollutants, dust are iron, silicon, aluminum, magnesium oxide, coke powder,
etc. Gravity flow and pulse bag filter dust removal are adopted with efficiency
99.5%, blast furnace gas dust after purification concentration < 10 mg/m3 can
be used for the comprehensive utilization of coal gas users.
(3)Hot blast stove
Tthe hot blast stove gas is purified gas from blast furnace, containing a
small amount of dust, etc., can be discharged through high chimneys directly.
7.7.3.2 Comprehensive utilization of solid waste
1) Sintering dust removal system gathers the dust for sintering returning
raw material.
2) Blast furnace gas after gravity dust precipitator, the collected gas ash by
the filter powder can be used as raw materials for the sintering.
3) All the blast furnace water slag can be used as brick raw materials for
walls and the second phase of building bricks in the future.
4) Refractory waste does not contain toxic substances, can be sent to
slag field or pave the way, can also be processed into aggregate used for
repairing.
7.7.3.3 Water pollution sources and pollutants and control measures
1) Sintering system
Sintering equipment of indirect cooling hot waste water with no other water
pollutants can be put into the net system. Hot water after cooling tower cooling
treatment cam be added as new water for each circulation use by pump
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pressure.
Muddy water system: a mixture of dust removal water and rinse floor water,
waste water mainly contains suspended solids, design is to remove suspended
solids by settlement treatment, the supernatant fluid can be put into the material
circulation system. Bottom sludge shall be discharge to the sewage pool, after
slurry pump pressurized into the sludge dewatering machine processing for
comprehensive utilization.
2) Blast furnace system
Blast furnace ironmaking wastewater mainly includes: indirect cooling hot
wastewater, including body and blast furnace hot blast valve, slag tapping
mouth, blast furnace tuyere mouth, indirect cooling heat blower station, no other
impurities, the clean water circulating water shall be added as new to recycle
after the cooling tower cooling treatment,.
The blast furnace slag water after use shall be put into turbid circulating
water system.Slag flushing water treatment: the slag water goes through slag
ditch into the sediment pool, after sediment can be used by pump cycle, slag
pool needs regular cleaning by bridge type grab crane, the tramsported slag
shall be used as raw materials for the production of cement, or made into clinker
with blast furnace bag dust dried by steam, can also be used as factory building
materials, can be used in the path of masonry walls and worker dormitory,
wastewater effluent.
Various washing floor water drainedto enter the tank first, and then
discharged into the plant drainage system, life system directly into the factory.
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7.7.3.4 Noise control measures
Noise pollution for projects in addition to the main equipment noise source
based on the mechanism of the noise spectrum characteristics has been taken
prevention measures, distance decay process configuration, building block to
control the noise to meet GB12348-2008 class Ⅲ standard.
1) All kinds of fan air dynamic noise source intensity between 95 ~ 107 db
(A), the overpressure relief pipe mouth 110 db (A), silencer for control is design.
Set the fan in the sound insulation to reduce the noise radiation.
2) The air compressor air dynamic noise 90 ~ 95 db (A), placed in the
station building, import suction filter is installed, tossing valve installed exhaust
muffler.
3) Strong vibrating screen noise is 90 db (A), strong ball mill noise 95 db (A),
hammer crusher strong noise 98 db (A). Equipment to produce high noise,
sound insulation, damping vibration noise reduction methods have been taken.
7.7.4 Greening
Around the factory workshop, the place such as transportation road
planting suitable for local climate, stain resistance of trees and flowers are
planted to prevent pollution, protect and improve the environment.Greening
covering coefficient by 20%.
7.7.5 Environmental management institution and environmental monitoring
Environmental protection and management of the project work can be
unified management by the company security environmental protection
institution.
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7.8 Occupational health and safety, fire control
7.8.1 Design of rules, norms, standards and regulations, according to Chinese
standard)
1) General rules for design of production equipment safety and hygiene
GB5083-85;
2) Health standard for design of industrial enterprises GBZ 1-2002;
3) Harmful workplace occupational exposure limit of chemical hazardous
factors "(GBZ 2.1-2007);
4) "Specification for fire protection design of buildings (GB50016-2006);
5) " Specification for seismic design of buildings (GB50011-2010);
6) Building lightning protection design specification (GB50057-2010);
7) Explosion and fire dangerous environment electrical device design
standard "(GB50058-92);
8) Specification for design of automatic fire alarm system (GBJ140-98);
9) "Specification for design of extinguisher disposition" GB50140-2005;
10) GBJ87-85 "specification for the industrial noise control;
11) Specification for design of power supply system of industrial and civil
GB50052-95;
12) Specification for design of industrial and civil electrical device
grounding GBJ65-83;
13) Specification for design of heating ventilation and air conditioning
GBJ19-87;
14) "Ironmaking safety procedures"
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15) Coal preparation plant safety rules
16) Coking safety procedures;
17) Sintered ball force safety procedures.
7.8.2 Unsafe factors and occupational hazard analysis for the project
1) Natural hazard factor
Thunder and lightning, seismic, heat and other adverse factors, such as do
not take precautions, possible damaged equipment, plant, production accident
and personal injury, etc.
2) Production process unsafe factors
Mechanical damage and personal fall, electrical accident, unsafe factors
such as water supply, fire and explosion accident.
3) Project occupational hazard analysis
Main occupational hazard factors are: powder (smoke) dust, poisonous
and harmful gas, noise, thermal radiation and so on, if don't take measures, will
cause a certain danger to personal.
7.8.3 Main prevention measures in the design
7.8.3.1 Natural disaster prevention measures
1) Lightning protection, anti-static measures
According to GB50057-2010 specification for design of building lightning
protection of the relevant provisions, the project plant lightning protection is
given priority to with setting the lightning rod, over 15 m the roof of the high-rise
building, structures of lightning protection zone, the need to protect the building
and structures which are within the protection.
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Oxygen equipment, pipes, pipe flange according to the specification for the
fortification electrostatic accumulated to be discharged by grounding device.
2) Anti- earthquake measures
To prevent disasters, the project to build according to the relevant
provisions of the "code for seismic design of buildings and so on. The project
should be in accordance with the local basic intensity of earthquake fortification.
7.8.3.2 Safety measures in production
1) Mechanical equipment safety precautions
The movable exposed part of the machinery, regardless of the high and low,
regardless of the rotary belt straight line, reciprocating movement are all in
accordance with the provisions set protective porch or protective railings;
In factory the ditch, ditch, pond, well sealed or set up safety rail;
The engineering workshops mainly for the dangerous sites, setting no
thoroughfare or other warning signs;
The engineering crane easy to collision equipment, falling objects,
flammable and explosive place high homework, as well as other accident black
spot, easy to identify the safety sign or set up eye-catching warning signs;
Vertical ladder and inclined ladder, protective railings and working platform
of production in accordance with the relevant state standards
2) Electrical safety measures
The electrical equipment of the electrical engineering metal shell, such as:
high and low voltage switchgear, transformer, etc., shall set system grounding,
zero, guard against electric shock accident;
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Adoptiong of security power, reduce the unsafe factors on power;
The project electrical equipment layout has enough safety distance;
Charged conductor of the exposed part protection network Settings; Change
settings screen protection, power distribution; high voltage danger zone shall be
set with warning signs;
The project electric room, transformer room window, exhaust and channels
also shall be set with the wire net, to prevent small animals into cause all kinds
of short circuit accident;
In order to prevent the accident caused by the concentration, the design of
important process by PLC to realize the safety interlocking ensures the safety of
person and equipment.
3) Lighting safety measures
At work, all plant, operating point, the pavement and road hairpin turn, end,
one-gallon and main motor transport, in the place, there are enough lighting
device;
In the project electric room, master control room, substations and other
important places, in addition to the normal 220 v lighting, shall be set with
accident lighting at the same time;
There are explosive dangerous location with explosion-proof lamps and
lanterns.
4) Safety measures of water supply
The water pump station, cast iron machine add backup power;
Plant network as the loop network;
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Water supply system design have all kinds of water level, water quantity
indicating instrument.
5) Fireproof, explosion-proof measures
Shall consider of slag iron groove design to prevent water and set to
automatic tilting tin can, the central set of slag ditch precipitation pit in order to
prevent the hot metal into the cinder flushing system, explosion caused cinder
flushing.
7.8.3.3 Main preventive measures against occupational safety and health
1) Powder (smoke) dust control measures
In accordance with the relevant provisions of the health standard for design
of industrial enterprises, propylaea sprinklers are for the transfer station,
blast furnace ore tank storage to prevent the dust float in the sky;
Such as vibrating screen, belt conveyor transfer station producing dust, set
the drawing ventilation dust removal;
Sintering machine produces a large amount of smoke,gas after dust
treatment shall be discharged outside through the chimney; After feeding
system of produces dust , that shall be collected by dust removal process, and
discharged outside through the chimney.
2) Poisonous and harmful gas control measures
The project set a fixed dangerous parts CO gas monitoring and warning
device, and is equipped with movable CO detector;
Top charging equipment, tuyere, slag are tightly sealed mouth, shall not be
leakage gas.
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3) Thermal radiation of control measures
For the high temperature radiation zone, to set up mobile local cooling air
supply, axial flow fan and strengthening ventilation cooling of natural ventilation.
The master control room, operation room, the circulating water pump
station and so on various major workplace shall be set with ventilation cooling
facilities.
4) Noise control measures
Production workshop and the noise of the workplaces shall meet GBJ87-85
"industrial noise control design code" regulation, for blast furnace blower, the
gas radiation as well as mechanical and electrical equipment operation and
classification of crushing, screening equipment of dynamic noise and
mechanical noise, noise elimination, sound insulation, shock absorption
measures respectively, shall be in post noise control within 85 db (A), the duty
room, lounge, such as adopt soundproofing Windows and doors, make indoor
noise control under 70 db (A), the strong noise workplaces post personnel using
individual measures, such as wearing earmuffs or earplugs.
7.8.3.4 Fire protection measures
According to the engineering characteristics of production in place of fire
explosion risk mainly include: the blast furnace control, gas control room, all
kinds of transformer room, switch room, cable tunnels, cable room and
lubrication station, electric, gas, gas facilities, fire danger areas, due to reasons,
such as flame, flux and spark may cause a fire.
1) General fireproof
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In accordance with the requirements of production, transport and the
factory fire, the factory construction, renovation, road network, the trunk road
are consider clear in the fire.
According to the code for fire protection ring design of buildings, each
building have enough fire prevention spacing, the main transport path
considered as fire lane at the same time.
2) Fire water
Smelting workshop belongs to D class plant, the designed building fire
resistance rating is according to the secondary design, workshop fire
consumption is 15 l/S, 5 nozzles for at the same time; Factory fire calculated at
the same time a fire and water for 20 l/S, fire lasted for 2 hours, 252 m3 storage
water is in the pool. Added new water production, fire will be qenched by factory
production of new water supply pipeline. Factory fire form annular pipe,
respectively set up outdoor hydrant on the ground, the protection radius of 120
m.
3) Electrical fire and lightning protection
Sand box and fire fighting equipment are set at high voltage transformer
room, low voltage distribution room and control room entrance, the use of CO2
or halon fire extinguishing device;
Using flame retardan cable export, refractory block, according to the
relevant provisions of the amount fire doors, firewall settings;
Fire power supply adopts two way power supply, fire alarm and fire control
devices by the power supply security;
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The gas dust removal system adopts explosion-proof electric appliance;
According to the building lightning protection design specifications
GB50057-94 ", the main factory building, power supply and distribution system,
gas supply, drainage pipe and other inflammable and explosive building are
equipped with reliable lightning protection or grounding measures.
(4) Gas fireproof
Gas inlet piping is set with low voltage alarm, automatic cutting and
aeration, purging device;
Blast furnace roof, gas pipes, gravity dust collector, etc., have steam tube
and valve, when the blast furnace damping down, close the gas cut-off valve,
open the steam valve, open the gas radiation valve, gas with high pressure
steam driven container in order to ensure safety.
In the hot blast main part, a backflow damping down valve and tossing in
tube are set, when the blast furnace damps down maintenance, open the back
damping down valve, discharge of the high pressure blast furnace gas, and
ensure the maintenance operation safety.
To prevent the blast furnace system of gas explosion, the blast furnace top,
gravity precipitator entrance are set with interrupt valve, roof, interrupt exports
set above the valve and filter radiation valve.
5) Fire control communication
Master control room, transformer room, gas management office and all
kinds of hydraulic station and other key and inflammable area are set with the
fire automatic alarm facilities according to the relevant provisions.
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Each operation room and office are set in the workshop direct-dial phone,
for fire control communication.
6) Safety signs
More obvious position in the factory shall be set with no fire signs , for
some explosive dangerous location shall be set with "be careful with fire, be
careful operation" and so on fire. Concrete are calculated by GB15630-95 "fire
safety sign set requirements.
7.8.4 Welfare facilities
In accordance with relevant provisions of the relevant documents, the
project should have a certain number of office, dining room, bathroom, storage
room and safety JiaoYuShi, clinics, and male and female toilets, etc.
7.8.4 Safety and health institutions construction
One company a manager shall be in charge of the work of occupational
safety and health, and set up a full-time technical staff responsible for safety and
health work, part-time security team has busboy, the formation network to
ensure safety.
Fire service security fire department unification shall beconsidered by the
company, equipped with fire fighting department responsible person, to be
responsible for supervision and management.
Gas protection is equipped with first aid equipment and vehicles, with
full-time gas paramedics.
7.8.5 Expected effect
This project in view of the production process and the specific local
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conditions, and according to relevant national standards, rules, regulations,
adopted in the design of preventing earthquakes, lightning, torrential rain, heat,
and at the same time a series of safety power supply, water supply, other
damage prevention measures, under normal circumstances, the mechanical
and electrical equipment and personal safety; production characteristic, take the
dust, noise reduction, to poison the air volume control, for the worker to create a
good operating environment, enterprises shall play a role of establishing an
effective safety and health management system, worker safety and labor health
will further safeguard.
Fire control design of this project is in line with the principle of "prevention,
fire control combination", according to the relevant laws, regulations and norms,
has adopted a series of preventive measures, in normal circumstances, can be
found in time, prevent and reduce the dangers.
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Chapter VIII Technical and economic analysis
8.1 Factory system and organization
After the completion of the project, the internal mechanism based on the
principle of lean, efficient, and are combined with the characteristics of blast
furnace smelting and alloy enterprises, the design capacity are 240 (referred to
the chart)
Blast furnace, sintering, lime kiln, power plants are based on continuous
production, four shifts personnel for the post production personnel.
*** International Indonesia Mining investment Co., Ltd General Manager is
responsible for this linear system.
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Personnel plan
Department manager Day duty Day shift Middle shift Night shift rotate days off subtotals
Chairman of the board 1 1
General manager 1 1
Vice general manager 2 2
Office 3 3
Finance department 4 4
Marketing department 3 3
General affairs 1 3 3 3 10
Raw material workshop 4 13 13 30
Sintering workshop 4 14 14 14 14 60
Lime kiln workshop 1 4 4 4 4 17
Smelting workshop 4 36 36 36 36 148
Power plant 3 10 10 10 10 43
Power distribution 2 4 4 4 4 18
Machine running 2 10 10 10 10 42
Maintenance 4 10 10 10 10 44
Guard 3 4 4 4 15
Loadometer 3 3 3 3 12
Warehouse 4 4 4 4 4 20
Total 473
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Chapter IX Project implementation plan
9.1 Construction cycle planning
The construction period is divided into prophase work stage and project
construction implementation stage two parts.
The preparatory work, including the preparation of project feasibility
research report, proof; the funds, the construction drawing design, etc., for
Indonesia's special circumstances, is expected to 6 months.
The project implementation stage: domestic equipment purchase, transport,
packaging, shipping, customs clearance, civil construction, installation,
commissioning, is expected to 8 months.
9.2 Schedule for each implementation stage
1. XXX, complete the project possibility study report;
2. XXX ~ XXX, complete the construction drawing design;
3. XXX officially starts construction;
4. December 2015 complete 2X80m3 blast furnace, lime kiln, 1X150 m3
1X52 M2 step sintering production line, 2X3MW gas power generation projects
and put into operation.
5. February 2016 achieve the design index.
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ChapterX Investment estimation and fund raising
10.1 Investment estimation
The estimated investment of the project includes: main production projects,
auxilary project, public project and other supporting expenses etc...
10.1.1 Compilation basis
1, "Construction project feasibility study of investment estimate preparation
method"
2, "Other construction costs to prepare regulations"
3, All professional estimation indicators, reference to similar engineering,
combined with the actual project adjustment
4, Investment estimation concords with the first half of 2014 prices
5, State Development Planning Commission of investment (1999) Notice
No. 340 "on the basic construction of large and medium-sized projects post
reserve funds management"
6, Iimport and export duties and shipping fee provisions
7, Indonesia relevant provisions on the engineering construction
10.1.2 Main equipment and materials prices
1, Equipment price
The main reference is referred to similar engineering estimated data The
insufficient part is referred to recent engineering pricing of economic information
data.
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2, Main material price
Main material of construction engineering is determined according to the
current market price of precious and special materials for recent inquiry.
10.1.3 Estimated indication
1, Installation engineering
According to the designed evaluation of the project; or by reference to the
similar engineering investment indicators
2, Construction engineering
Construction project is according to per square meter cost, structures,
cubic meters cost conditions, and roads are according to the purchase price of
the cubic meters square metre cost estimates.
10.1.4 Investment estimation
This project estimation is based on Zhongding international mining
investment Co., Ltd. annual capacity of 50,000 tons nickel iron Indonesia
production line construction content compilation, with a total investment of 250.4
million RMB (total investment form shown in table.
Total investment table
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No Project Investment (10
thousands) ¥ Ratio Note
1 Construction project cost 2160 8.63
Office, living, roads,
landscaping, port road
outside the fence
excluded
2 Installation cost 1460 5.83 Indonesia construction
cost
3 Equipment outsourcing 13940 55.67
4 Other expense 7480 29.87
Liquidity, design cost
and circulating funds
included
Total 25040 100% Land cost, wharf, roads,
outside wall excluded
10.2 Raising funds
Enterprise raises the funds, bank interest is not considered in order for
convenientcalculatation.
Table 10-1 Investment evaluation Unit: ten thousand RMB
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No. Construction or cost items Construction
expense
Equipment
expense
Installation
expense
Other
expense Total Ratio (%)
1 Engineering cost 2159.84 13940.93 1460 0.00 17560.77 70.13
1.1 Raw material factory part 832.52 2808.04 110 3750.56 14.98
1.2 Blast furnace part 484.26 3866.43 960 5310.69 21.21
1.3 Lime kiln part 192.77 530.89 130 853.66 3.41
1.4 Sintering part 294.21 3530.48 120 3944.69 15.75
1.5 Power generation parts 286.5 2528.56 138 2953.06 11.79
1.6 Test part 55 74.53 129.53 0.52
1.7 Weigh bridge 15 12 2 29 0.12
1.8 Transport transit vehicles 590 590 2.26
2 Engineering construction 1240 1240 4.95
2.1 use of land 0.00
2.2 Construction management fees 80 80 0.32
2.3 Survey and design 460 460 1.84
2.4 Construction teperary expense 360 360 1.44
2.5 Engineering construction supervision 0.00 0.00
2.6 Engineering insurance premium 0.00 0.00
2.7 Joint type car 300 300 1.2
2.8 Production staff training 60 60
2.9 Office furniture purchase expense 0.00 0.00
3.0 Reserve funds 4975.03 4975.03 19.87
3.1 Basic reserve funds 682.52 683.52 2.73
3.2 Surprice of reserve funds 292.51 292.51 1.17
4 Circulating fund 1800 1800 7.19
6 Construction total investment 2159.84 13940.93 1457 4015.03 25040 100%
Percentage (%) 8.63 55.67 5.82 16.03 100% 100%
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ChapterXI Technical and economic analysis
11.1 Specifications
The economic analysis and evaluation is in accordance with the National
Development and Reform Commission and the Ministry of Construction issued
the "construction project economic evaluation method and parameter (third
edition)" the relevant provisions and with the combination of current fiscal and
taxation laws and regulations in Indonesia.
11.2 Basic data
1) Production scale and product solutions
After the completion of the project, the scale of production will achieve
annual production nickel iron blast furnace 50,000 t/a (10% nickel). Production
cost of sintered ore is 273,000 t/a, coke 110,000 t/a.
2) Implementation schedule
Projec construction period is 10 months, commissioning period two months;
production shall be the second year.
3) Wages and welfare funds estimates
This project needs labor capacity of 473 people, salary and welfare funds is
at $10,000 per person per year, calculated the annual salary and surcharge is
$4.73 million.
4) Production scale and product solutions
Daily output of 142 tons nickel iron (10% nickel).
5) Calculation period
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The evaluated life period of the construction project is 12 years; construction
period is 1 year, the fund raising period 1 year.
11.3 Product cost
11.3.1 Operating cost estimates
11.3.1.1 Main raw material consumption
1) Main smelting raw material composition
Coke, laterite nickel ore, limestone, fluorite, anthracite
Description:
1, Above the all is to Indonesia factory price;
2, Coke considers transfer powder is 5%;
3, Laterite nickel ore price to factory wet tons price is $32.4, 65% water;
4,Gray coal calculated at 5000 kcal, per coal 340 g for 1 degree, the surplus
blast furnace gas power generation should be added every day 16.32 tons of
No Items Unit price
(USD/t)
Daily
comsumption (t)
Annual
comsumption(ten
thousand t)
Daily cost
(USD)
Annual cost(ten
thousands USD)
1 coke 228.4 314.29 11 71783.84 2512.43
2 Laterite nickel ore 32.3 222.16 7.78 7175.77 251.29
3 Lime stone 12.9 214 7.49 2760.6 96.62
4 Fluorite 96.8 1.3 0.46 125.84 44.53
5 Material consumption 30/t Ni ore 3900 136.5
6 Lignite power generation 30 16.32 0.57 489.6 17.14
7 Anthracite coal 120 70 2.45 8400 294
Total 107093.81 3101.22
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coal.
5, Anthracite is sintering using coal, coke powder amount is insufficient, and
anthracite coal is needed to be added. Daily anthracite coal, 70 tons
11.3.1.2 Other cost estimation
No. Items
Daily production cost
( Ten thsousands
USD)
Annual production cost
( Ten thsousands USD) Remarks
1 Wage 1.35 473
Factory workers in the production is 473
persons according to the calculation, the
salary and benefits is $10000 per person per
year
2 Maintenance
costs 0.03 11.89
3 Depreciation
cost 1.13 396.2
Building investment is calculated by 20
years depreciation, equipment
depreciation depreciation is 10 years, the
salvage value 5% maintenance fee
depreciation is 3% of the value
3 Insurance
premium 0.02 7.4
4
Nickel iron
sales sea
freight
0.5 175 Nickel iron all assumed to be sold in China
Total 3.03 1060.5
Description:
Sea freight for the nickel iron production sales to China sea freight, each ton
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of nickel iron is $35.
11.3.2 Gross income
No Item Daily output (t) Unit price Daily income (ten
thousands USD)
Annual income(ten
thousands USD)
1 Ni 142 2000 28.4 9940
Description:
Nickel iron China sales price is $2000 per ton, 10% nickel, all kinds of freight
to China is calculated at $35 per ton.
11.3.3 Gross profit (before tax)
Daily profit (ten thousands USD) Annual profit (ten thousands USD)
14.66 5131
11.4 Investment recovery period
1, Total investment is 258 millionRMB, that is, 42.0881 million USD;
2, Total revenues is $51.31 million
3, Iinvestment recovery:
4208.81/5131 = 0.82 year, construction period 1 year, debugging period 2
months
The total investment capital shall be recovered in 1.82 years.
<Finish>