SU1682340A1 - Method for obtaining aggloporite - Google Patents

Abstract

The invention relates to building materials and can be used to make agloporite from a mixture of clay raw materials and industrial waste. To reduce the bulk density of agloporite and increase its strength, the raw material mixture is moistened with wastewater from the process of enrichment of antimony ores at a mass ratio of the raw material mixture and wastewater

Description

The invention relates to building materials and can be used to make agloporite from a mixture of clay raw materials and production wastes.

The purpose of the invention is to reduce the bulk density of agloporite and increase its strength.

The method of obtaining agloporite involves preparing the raw material mixture of the clay component, industrial waste and fuel-containing additives, wetting it, granulating and roasting, while the raw mixture is moistened with wastewater from the process of enrichment of antimony ores at a ratio by weight of the raw mixture and wastewater , 1-12,5) :.

Wastewater from the process of enrichment of antimony ores is characterized by the following properties pH 8.2–8.5. Content of impurities, mg / l: antimony 3; mouse to 0.5-0.6;

lead 0.6; zinc 0.9; calcium 24; magnesium 11.5; xanthates 0.5; petroleum products 8.

The presence of impurities in the wastewater is due to the ore beneficiation technology — these are predominantly fine, slimey products that are not extracted during the beneficiation process.

The size of these particles is less than 0.063 microns. The impurity x contains ions of non-ferrous metals in the form; SbSa, AsS43; AsS /: AzZ3; PbS; ZnS and others. These fine particles are capable of performing a cementing role at the initial stage of granulation, which makes it possible to obtain dense, regular granules that affect the decrease in bulk density and increase the compressive strength of the agglomerated granules.

To obtain agloporite, a mixture of the following composition is used, wt%;

Clay raw materials45,5

SP

with

about.

00

go so

N o

Coal2.5

Slag metallurgical processing of antimony32.0

Tailings of antimony ores 19.5 Liquid glass 0.5 After crushing, the mixture is passed through a sieve with 5 mm openings, then mixed and put into a hopper with a screw feeder. The granulation of the mixture is carried out on a plate granulator with a bowl diameter of 1.3 m with simultaneous dosing with a mixture of 3% liquid glass diluted with wastewater of the process of enrichment of antimony ores. The humidification is carried out until the moisture content of the mixture is 8%. This raw mix contains 92% dry blend and 8% wastewater. The ratio of the raw material mixture to the wastewater is 11.5: 1.

Sintering of the charge is carried out in laboratory bowls with an area of the grate 0.03 and 0.1 m2. The mixture 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 was set at 250 mm. The ignition temperature of the mixture

1150 ° C. Discharge under the grate during the ignition process is 120-100 mm of water. Art.

The properties of the resulting agloporite are presented in the table.

The method provides obtaining agloporite with a bulk density of 390-410 kg / m3 and strength of 2.9-3.3 MPa. The improvement in the properties of agloporite is due to the effect of antimony, which acts as a glass-forming agent, strengthened the framework, and as an expansion agent, leading to a decrease in the bulk density.

Claims (1)

Invention Formula The method of obtaining agloporite, including the preparation of the raw material mixture of the clay component, industrial waste and fuel-containing additives, its wetting, granulation and roasting, in order to reduce the bulk density of the agloporite and increase its strength, the raw mixture is moistened with waste water the process of enrichment of antimony ores with respect to the mass of the raw material mixture and wastewater (10.1-12.5) :.