15m3 Pig Iron Blast Furnace

Guo ke +86 132 9904 2234 [email protected]

Proposal for 15m3 Pig Iron Blast Furnace

Guo ke/郭珂

Email: [email protected]

Skype: guoke896884090

Mobile：+86 132 9904 2234 (Whatsapp)

Location: Xi'an City, Shaanxi Province, China

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mailto:[email protected]



General statement

A 150m3 blast furnace mainly include furnace body, dedusting, hot air

furnace, charging, one 30 meter casting machine and corresponding equipments

on water, power, gas, heating, road and basic accessories.

Here we just give contents of blast furnace system. utilization coefficient is

4.0t/m3·d，with 21000 MT annual production and 10000 MT slag.

1. Designing

1.1 general plans

1.2 15m3 blast furnace

Coke tank and material transfer system, furnace top and charging

system, furnace body, tuyere platform and cast house, gas system, hot air oven,

slag treatment, blower station, cast machine and process facilities, like power

supply, HVAC, water supply and drainage and other auxiliary facilities.

2. Engineering data

2.1 effective volume：15m3；

2.2 top pressure：0.02-0.04MPa；

2.3 hot air temperature：1100℃；

2.4 utilization coefficient ：4.0t/m3·d；

2.5 coke ratio：0.6kg/tFe；

2.6 productions: 60T/d

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2.7 Slag: 28T/d

3. Raw materials consumption

4. Details

4.1 iron production

4.1.1 On the utilization coefficient of 4.0t/m3·d, with annual working of 350

days, the annual production will up to 21000T.

Key data of the furnace

No. Name Unit Data Note

1 Furnace capacity m3 15

2 utilization coefficient t/（m3.d） 4.0

3 Annual working days d 350

4 Coke ratio kg/t 600

5 Air consumption m3/t 3600

6 blow-in air volume Nm3/min 150 Fan capacity 160Nm3/min

Furnace top pressure MPa 0.02-0.05

7 How air temperature ℃ 1100

8 Pig iron output

Daily output t/d 60

Annual output t/a 21000

10 Slag yield t/a 10000

No. Name Daily use Monthly use Annually use Note1 Ore block 78T 2340T 27300T2 Coke 46.8T 1404T 16400T3 Limestone 3.12T 93.6T 1100T

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11 Gas yield

Gas output per ton m3/t 2100

hour output m3/h 5250

12 Dust

Dust yield per ton kg/t 10

Daily dust output t/d 6

Annual dust output t/a 2100

13 Furnace life Year 5

4.1.2 Ore & coke channel and materials transfer system

The coke and ore channel designed in single line distribution, beside the

furnace central line

With 2 coke channel, 2 ore channel and 1 volume ore channel totally.

There is feeding system below the channels, in the way of individual

screening, separate weighing and tape transport feeding method.

4.1.3 Materials charging and furnace top

Furnace top pressure is 20-60kPa, with 2 sets of pressure sharing and

discharging system.

Small hopper volume is 2m3 and big hopper effective volume is 4.5m3, the

effective volume of materials skip is 1m3

4.1.4 Furnace body

Pyhnic type of furnace body is adopted for high metallic ore smelting.

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Furnace dimensions

No. Name Unit Data

1 Volume V m3 15

2 Hearth diameter d mm 1400

3 Waist diameter D mm 1800

5 Iron layer thickness h0 mm 150

6 Bosh angle 79.5

7 Stack angle 83.25

8 Furnace throat height h5 mm 1000

9 Effective height Hu mm 00

10 Hu/D 5.94

11 Tuyere pcs 6

12 Cast mouth pcs 1

13 Slag mouth pcs 1

⑴ Steel frame of furnace body: all the platform are supporting on the

furnace shell.

⑵ Lining: High Al bricks used in furnace bottom, hearth, bosh, belly and

lower stack parts, and clay bricks are used in mid and upper parts.

⑶ Spray cooling method used in the furnace body with free-standing

furnace shell.

4.1.5 Tuyere platform and cast house

Tuyere platform is a solid platform.

Casting in front of furnace, with fixed wheel type 30 meters single-line

casting machine.

Electrical tapehole machine and a hydraulic clay gun are put in each iron

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groove side.

4.1.6 Raw gas system

Gas is transferred by two pipes from the furnace, and put together into one

pipe and drop into gravity dust collector.

4.1.7 Slag processing

Vesicular slag process adopted

4.1.8 Hot blast stove

Three sphere type hot blast stove equipped with proper refractory materials.

(1) Capacity and designing

Capacity 160m3/min

Temperature 1100℃

Pressure 0.049MPa

Dome temperature Max 1300C

Exhaust gas temperature 300～400C

Fuel Blast furnace gas

⑵ properties

Properties of sphere type hot blast stove

No. Name Unit Num. Note

1 Effective capacity m3 15

2 Number set 3

3 Whole height mm 14500

4 Refractory ball diameter mm 40/60

5 storage area of refractory ball m2 94.5/63

7 ball amount of each stove t 40

8 heating area per m3 furnace volume mm 100

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9 Ball diameter of bed masonry mm 2180

10 ball bed height mm 5500

11 ball bed basal area m2 3.73

12 ball number per m3 blast t/m3 0.25

13 hot air temperature ℃ 1100

4.1.9 Cast machine

Capacity of a cast machine is maximum 120t per day, which surely can meet

demands.

Max capacity 80t/h（10m/min）。

Properties of main equipment:

⑴ cast machine

type：single chain movable；

max capacity：50t/h（10m/min）；

⑵ mortar stirring device

Function：produce mortar；

type：electric agitating；

motor efficiency：4kW；

mixing speed：25.95r/min；

⑶ Mortar spray

Function：spray the prepared mortar to cast mold to prevent sticking;

Mortar pump flow：120m3/h；

Mortar pump motor power：11kW;

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⑷ water spray cooling

4.2 Thermal

4.2.1 Blasting station

Two Rhodes blowers with size of 160Nm3/min are set up for the furnace;

the cool air will blow in through blasting pipes into heating oven.

4.3 Ventilation and dust removal

Sealing covers are put around each dust collection point, and all the dust will

discharged after standard treatment.

Ventilation and air conditioning are equipped for Laboratory, substation,

power distribution room, duty room and operation room.

4.4 gases

Gas facilities mainly include 1) the BFG dry bag dust collector; 2)

spontaneous emission of remaining gas; 3) Dry cloth bag collector to gas pipe

line.

Dry cloth bag collector used in gas collection with gas anti blowing method.

4.5 powers

Load of power supply for all the equipment, after compensations, will be:

Pjs=380kW, with 415v start voltage.

One substation, the smelting one, with voltage of 416V, load of 380kVA, and

1 power transformer of 630kVA.

4.6 meters

Include all meters for furnace fan, gas, heating, water cycling system and

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auxiliary facility, and also for process controlling.

4.7 communications

Communication system, industrial television system, fire alarm system are

included.

A 32 program-controlled dispatching host set up, as the connection hub for

all telephones in the factory.

4.8 test and chemical analysis

A laboratory center will be set up for quality analysis of raw materials and

products.

Sampling and deliver by are artificially.

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Documents

15m3 Pig Iron Blast Furnace