SU1606485A1 - Initial composition for making porous sinter cake - Google Patents

Abstract

The invention relates to the production of building materials and can be used for the manufacture of agloporite. To reduce water absorption and increase the frost resistance of agloporite, the raw mix for the manufacture of agloporite includes (in wt.%): Clay raw materials 43-48, coal 2.2-2.8, slag metallurgical processing of antimony 31-33, 18 21 and liquid glass 0.2-0.8. The resulting agloporite fraction of 5–20 mm is characterized by a bulk density of 445–510 kg / m ³ , strength of 0.95–1.42 MPa, water absorption of 6.0–8.3%, and frost resistance of 100 cycles. 3 tab.

Description

The invention relates to the manufacture of building materials and can be used to make artificial porous aggregates, namely, agloporite.

The purpose of the invention is to reduce water absorption and frost resistance of agloporite.

Raw materials for the manufacture of agloporite include, in wt.%: Clay materials 43-48; coal 2.2-2.8; pshak metallurgical processing of antimony 31-33; enrichment tails of antimony ores 18-21 and liquid glass 0.20, 8.

The chemical composition of the components used is presented in table. one.

The slag of metallurgical processing of antimony was obtained by melting a mixture consisting of antimony concentrate, soda ash and caustic, at 1200–1250 C. , Slag is a monolith, glossy in a fracture, in this case the glass phase is sodium-aluminosilicate glass, and contains mainly silicon, aluminum and sodium oxides. At the same time, silicon and aluminum oxides are capable of forming a glassy frame and thereby creating the texture of agglobalous crushed stone. They contain donkeys and antimony, which is sublimated.

but

00

sd

when processing sfyevogo mixture, reduces the bulk weight of the product.

Tailings are wastes from flotation concentration of antimony ores and are also stockpiled. According to the mineralogical analysis, they contain mainly quartz and calcite. As a clay component, the loam of the Almalyk open pit is used, which belongs to the coarse raw material. According to the X-ray analysis, it consists of kaolinite, hydromica, sericite, and falite. They are represented by fine-scaly kaolinite with an insignificant admixture of hydromica and iron hydroxide, as well as detrital quartz, while the content of clayey matter is 50%.

Agloporite based on the raw material mixture of these components is prepared as follows.

Example. The metallurgical pitch, the surmyan processing, the tailings of the antimony ores, the clayey raw material, the coal, in a given ratio after crushing, is passed through a sieve with 5 mm openings. Syfievu mixture is mixed and poured into a hopper with a screw feeder. The granulation of the mixture is carried out on a plate granule torus with a bowl diameter of 1.3 m with simultaneous dosing with a mixture of liquid glass diluted with water to 3% concentration. After granulation, the resulting granules are dispersed to establish the optimum moisture content of the charge.

The compositions of the investigated charge are given in table 2.

The sintering of the charge is carried out in laboratory bowls with a grate area of 0.03 and 0.1 m. The Chichite is loaded into the bowl. The top layer is filled with charcoal and ignited, while the fan is simultaneously turned on to suck the gases through the charge layer. The height of the layer is set to 250 mm. The ignition temperature of the mixture is 1150 ° C. The vacuum under the grate during the ignition process is 120-100 mm of water. Art., and in the process of sintering - 200-220 mm water.

After the sintering process is completed, the resulting aglopohrite is crushed and sieved into fractions

40-20, 20-10, 10-5 mm and test in accordance with GOST 9758-86. Indicators of the properties of the resulting

agloporite presented in table.3.

Agloporite is made from the raw mix, which in fractions 5-20 mm is characterized by a bulk density of 445-510 kg / m, strength

0.95-1.42 MPa, water absorption

6.0-8.3%, frost resistance 100 cycles of alternate freezing and thawing.

At optimal ratios

of the components of the mixture, the formation of a rigid aluminosilicate framework occurs, and the kinetics of heat exchange processes is improved. The latter is provided by TaiOTe due to the fact that in

Antimony compounds in the form of Sb,,. These compounds are easily volatile and sublime at 1100-1150 ° C, which contributes to a better heat exchange between

components of the charge.

At the same temperature, active silicate formation occurs with simultaneous inflow of the mass, which contributes to an increase in the porousity of the agloporite and, accordingly, to a decrease in its bulk mass.

Durable aluminosilicate frame improves water resistance and durability.

35

Claims (1)

Invention Formula Raw mix for the manufacture of agloporite, including clay raw materials, coal, waste products. characterized in that, in order to reduce water absorption and increase frost resistance of agloporite, it contains as a waste slag from metallurgical processing of antimony, tailings of antimony ores and additionally liquid glass in the following ratio of components, wt.%: Clayey raw materials43-48 Coal2.2-2.8 Slag metallurgical processing of antimony 31-33 X east enrichment of antimony ore18-21 Liquid glass 0,2-0,8 Product i ::: i: i: j sio, Table t Composition, ias.X 1 TuajO I RO In.n.n, I Sbp 53 .85 8.224.33 18.87 9.73 4.3 0.7 78, 41 3.052.44 -5.5 10.2 0.4 56.3 10.39 4.08 3.3713, 4 12, 46 Tablnia2