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Article contain an information about some applications of new unit by PC GlobeCore production - Intensifier of Technological Process, about production of construction materials such as silica brick, cellular concrete and expanded clay. Besides, application area of this unit is quite large and includes • The application of ABC in the waste water treatment processes • Intensifier of Technological Processes in the waste recovery and recycling. • Intensification of the chemical processes • Application of the ABC in the construction materials production • Intensification of the processes of powder industry • ABC in the electronic industry • ABC in the mining chemistry • Grinding of the cellulose at the vortex layer • Production of metal-polymeric compositions • Production of lacquers and paints • Production of mud-flush agents in the ABC • Obtaining of a combustible mixture for the ship propulsion plant • Application of ABC in foundry engineering • Metal and plastic parts processing • The influence of ABC to the heat exchange in a gas flow • ABC and rolling production (pipe) • Destruction of compound organic molecules • Intensification of mechanical and chemical reactions • Activation of solid substances • Intensifier of Technological Processes can be successfully used for the food industry More useful information, more articles you can find on our site www.fuelcleaning.globecore.com or contact us e-mail: oksana@globecore.com oksana.bichurina@gmail.com phone: +38066 52 65 207
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Construction materials production.
Application of the ABC-100 unit
Expanded clay industry
In the process of expanded clay
production the argillous raw material
homogenizes and mills in the drilling
mud mixers and rollers. But these
equipments not ensure qualitative
desintegration. As result we obtain the
expanded clay of low quality.
Insufficiently desintegration and homogenizing of
raw materials lead to the result when even 3% of
carbonate inclusion in the low-melt expanded clay can
make it unusable. Obtained in such way expanded clay
lose its durability or destroyed upon storage by the
reason of CaO hydration.
The oversanded glay with free SiO2 content to 10-
30% is also not suitable for expanded clay production.
All those problems can be successfully resolved by
using Vortex Layer Machine – ABC-100 PC
GlobeCore production. When we are using the unit
ABC-100 for desintegration and homogenizing of the
burden material we obtain the expanded clay of general
engineering and special designations. In this case we
also reduce the volume weight and increase the durability.
Intensifier of Technological
Process ABC-100 by PC GlobeCore
Table 1
Results of desintegration and homogenizing of the burden material for
expanded glay production by using ABC-100
№ o
f e
xp
erim
ent
Raw materials
characteristics and
treatment duration
in ABC-100
Expanded glay mechanical properties
Treatment of the burden
material
in АВС
Mixing of the burden
material
out of АВС
Vo
lum
e w
eigh
t, γ
,
g/c
m3
Sh
ear
stre
ngth
lim
it
σс*
10
-5, P
а
stre
ng
th-d
ensi
ty r
atio
Vo
lum
e w
eigh
t, γ
,
g/c
m3
Sh
ear
stre
ngth
lim
it
σс*
10
-5, P
а
Str
ength
-den
sity
rat
io
1. CaS04 with 26% of
free SiO2 content
(treatment of slurry
30 с)
0,24 2,25 10,3 0,38 1,60 5,1
2. The same with 41%
of free SiO2 content
(treatment of slurry
30 с)
0,34 2,45 7,8 0,84 3,24 4,1
3. hydromicaceous clay
(dry treatment 7
min)
0,85 29,4 36 1,6 9,81 6,5
Slip treatment of CaS04 with content of free SiO2 up to 40% leads to reducing
of volume weight of the expanded glay in 2 times and increasing of its durability.
The expanded glay strength-density ratio is almost in two times higher in the
expanded clay, which is made from the burden material the unit ABC-100. The
reason of sharp properties increase of the expanded clay is obviously activation of the
high-silica sand caused by creation of active center or other words free radicals
creation which are produced by the reason of the bond rupture of Si—O.
Activation of SiO2 leads to active participation of the expanded glay in the silication
and glass formation. After the expanded glay baking in its granules are absent coarse
particles of SiO2, which are the concentrator of tension. Presence of SiO2 in the glass
content increases its durability and thermostability.
Good results are obtained by dry treatment of the raw material by the
vortex layer. For example, from the monothermite (hydromicaceous clay) we
obtained the light-weight fireproof aggregate which has the volume weight in 2
times lower but the durability in 2 times higher than which we have for the
control sample (experiment 3, table 1). The positive result was obtained by dry
treatment of the multicomponent burden material (with 50% ashes content) by vortex
layer.
The given examples shows you that the application of ABC-100 (Intensifier
of Technological Process) is very perspective for obtaining of the expanded glay
of high durability and thermostability from oversanded and over-carbonized
materials, burden materials which contain up to 50% of waste product, for
example, the coal ash.
Cellular concrete production
Cellular concrete is made in result of
solidification preliminarily blown-out
mixture of the cementing medium, water,
silicious component using gasifier of
components. Most frequently as foaming
agent used aluminum powder. The
aluminum powder reacts with water
solution of calcium hydroxide and
disengages hydrogen.
In fact, the quality of cellular concrete is
high when the size of pores decreasing and
homogeneity of porosity is rising.
In order to ensure best quality of
cellular concrete is necessary to distribute aluminum powder in its weight and
increase the degree of dispersion. Besides, the one of technological factors which
determines the cellular concrete structure is content of active CaO in mixture.
As usual the preparation of gasifier reduces to partial paraffin film stripping from
aluminum particle surface by mixing of this film with water and surfactant species,
after these action need to introduce suspension into solution.
Because of low efficiency of mixing devices, paraffin film practically not
removed.
In addition, there is a coagulation of aluminum particles, which leads to the
local concentration of gas in the products, the appearance of voids and cracks.
Because of shortage of gas emission in the case of gas silicate production is necessary
to introduce up to 25% of lime into the mixture.
The necessity of additional introduction of a lime into the mixture is specified
by requirement to obtain the durability of concrete which allows to keeps it in
vesicular condition by the end of gas emission using the hydration cementation.
Application of ABC-100 unit for preparation of aluminum powder
suspension in production of the gas silicate allows avoiding the coagulation of
aluminum particles, raises their activity, gas yield and homogeneity of the
mixture. At the table 2 you can see some of the comparative data of physicochemical
properties of the gas silicate which was made by using the aluminum suspension
fabricated by different methods.
Table 2
Comparative data of physicochemical properties of the gas silicate which
was made by using the aluminum suspension fabricated by different methods
№ o
f e
xp
erim
ent
Conditions of
suspension
preparation
Unit
А
ВС
-10
0 p
roduct
ivit
y, L
/h
Mechanical properties of the gas silicate
Treatment of aluminum
silicate suspension by
ABC
Preparation of aluminum
powder suspension by
mixing machine
Vo
lum
e w
eigh
t, γ
,
g/c
m3
Sh
ear
stre
ngth
lim
it
σс*
10
-5, П
а
Str
ength
-den
sity
rat
io
Vo
lum
e w
eigh
t, γ
,
g/c
m3
Sh
ear
stre
ngth
lim
it
σс*
10
-5, П
а
Str
ength
-den
sity
rat
io
1 Aluminum
powder - 100%
against the
estimated
quantity
120 385
377
414
18,7
10,3
11,8
2,56
1,47
1,41
396
419
438
15,2
79,5
10,8
2,03
0,92
1,14
2 The same –
90% against
the estimated
quantity
950 386
427
375
14,5
15,2
12,3
1,85
1,70
1,80
437
—
—
14,1
—
—
1,51
—
—
The table shows that usage of treated aluminum suspension by ABC-100
allows to obtaining the gas silicate which has the durability up to 10-30% and
quality index up to 20-60% higher in comparison with the control sample (table
2, experiment 1).
Application of ABC gives a possibility decrease by 10 % gasifier
consumption and by 2% lime consumption. At the same time there is no weighting
of gasifier. On the contrary, the volume weight of the gas silicate is reduced but its
durability is increased. Obviously, the quality of the blown-out concrete can be
increased by the treating process by ABC-100 unit in the vortex field of sand-lime
mixture or in the sand-cement mixture on purpose of activation of SiO2 like we do the
same in expanded-clay aggregate production.
The silica brick production
The raw material for the silica
brick production is the high-silica
sand (92-95% of dry mixture) and
the lime (5-8%). Structural
capabilities of the brick directly
depend from the degree of activation
of SiO2 and mixing uniformity of
components.
According to this fact,
application of ABC for the treatment
of dry mixture by the reason of mixing and activation of components is of the utmost
interest. We have investigated the ways of sand-lime mixture activation by
spillage of material through the vortex layer of the unit ABC-100.
It is interesting to note that, in this short-duration treatment of the mixture
(mixture particles locate into the vortex field for a fraction of a second) the
grinding of the sand and the lime is not observed. The degree of activation can be
determined by the changing of mechanical properties of obtained silica brick.
Table 3
Conditions of the mixture treatment
by ABC
Compressive resistance
σс*10-5
, Pа
Without treatment 91,2
One-time spillage through the layer 239,5
Double spillage through the layer 324,5
Triple spillage through the layer 328,1
As you can see from the table by the short-duration treatment of the
mixture you can increase the durability of the silica brick in 3,5 times.
Obviously, similar processing sand-lime, lime-ash and lime-silica mixtures
leads to an marked increase of the mechanical properties of silicate concrete, which
are widely used in prefabrication.
Recommended