SU1675259A2 - Method of producing light filler - Google Patents

Abstract

The invention relates to the manufacture of porous calcined fill. The invention relates to the manufacture of porous calcined aggregates and is an improvement of the invention according to the author. St. Nb 1390208. The purpose of the invention is to reduce the duration of the rolling of the alumina mixture and to increase the adhesive properties. In the method of obtaining a lightweight filler, the heat-treated crushed grain is vibrated at a rumble with a frequency of oscillations per minute from 6000 to 12000 for 2 minutes and blown in the air stream at a speed of 5-10 m / s. The method for producing a lightweight aggregate is as follows. Rods of corn cobs with a moisture content of 35-40% are ground to obtain a mixed fraction of 5-20 mm. The resulting shredded material is subjected to heat treatment in a rotating tumble dryer at 300-400 ° C. At the exit from the drying drum rounded shredder comes vibrating screen, equipped with 1. To reduce the duration of the rolling of the alumina mixture and to increase the adhesion properties in the method of obtaining lightweight aggregate, the heat-treated crushed grain is subjected to vibrations at a roar with an oscillation frequency of 6000-12000 for 2 minutes and blown in the air stream at a speed of 5-10 m / s. The resulting aggregate has a bulk density of 560-580 kg / m3, strength 2.75– 2.85 MPa, the duration of the rolling of the shell of the alumina mixture is 3.5–4 minutes, the adhesion properties of the processed surface of the shredded material increase. 1 tab. 2 sieves, depending on the specified composition of the aggregate, where it vibrates with a frequency of 6000-12000 vibrations / min for 2 minutes, due to which separation of the rounded crushed dust-like charred particles from the granules occurs. The vibrating screen is connected by a pipeline with a precipitation chamber and in it a vacuum is created using a fan. The dust particles separated from the crushed material are picked up by the air flow and rush into the precipitating chamber. The finished granules are fired in a rotary kiln according to the known claydite production technology. Indicators of the properties of the resulting filler and process are presented in the table. The resulting filler is characterized by a bulk density of 560-580 kg / m, strength 2.75-2.85 MPa. At the same time, the duration of the knurling of the shell of the alumina mixture is reduced to 3.5-4 minutes. EO VJ ate M 01 o

Description

The invention relates to the manufacture of calcined porous aggregates and is an improvement of the invention by ed. St. No. 1390208.

The purpose of the invention is to reduce the duration of rolling the clay mixture and increase the adhesive properties,

In the method of producing a lightweight aggregate, the heat-treated grain of the crusher is vibrated on a screen with an oscillation frequency per minute of 6000-12000 for 2 minutes and blown in an air stream at a speed of 5-10 m / s.

A method of obtaining a lightweight aggregate is as follows.

The corn cobs with a moisture content of 35-40% are crushed to obtain a mixed fraction of 5-20 mm. The resulting crusher is subjected to rolling with heat treatment in a rotating drying drum at 300-400 ° C. Upon exiting the dryer drum, the rounded crusher enters a vibrating screen equipped with 1 leu. To reduce the duration of rolling the clay mixture and increase the adhesion properties in the method of producing lightweight aggregate, the heat-treated crushed grains are vibrated at a screen with an oscillation frequency per minute of 6000-12000 for 2 minutes and blown in an air stream at a speed of 5-10 m / s. The resulting aggregate has a bulk density of 560-580 kg / m ³ , strength 2,752.85 MPa. while the duration of rolling the shell from the clay mixture is 3.5-4 minutes, the adhesive properties of the treated surface of the crusher increase. 1 tab.

sieves depending on the specified composition of the aggregate, where it vibrates with a frequency of 6000-12000 vibrations / min, for 2 minutes, due to which there is a separation from the granules of the rounded crusher of dusty charred particles. The vibrating screen is connected by a pipeline to the precipitation chamber and a vacuum is created in it by means of a fan. The dust particles separated from the crusher are picked up by the air flow and rush into the precipitation chamber. Finished granules are fired in a rotary kiln according to the known technology for the production of expanded clay.

Indicators of the properties of the resulting aggregate and process are presented in the table.

The resulting aggregate is characterized by a bulk density of 560-580 kg / m ’, a strength of 2.75-2.85 MPa. In this case, the duration of rolling the shell from the clay mixture is reduced to 3.5-4 minutes

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1675259 A2 improves the adhesion properties of the processed surface crushing.

Claims (1)

the adhesion properties of the processed surface of the crushed material are improved. The invention method of obtaining a lightweight filler auth. St. No. 1390208, characterized by the fact that, in order to reduce the duration of the rolling of the alumina mixture and to increase the adhesion properties, the heat-treated crushed grain is subjected to vibration at a roar with a frequency of oscillations per minute 6000-12000 for 2 minutes and blowing in the air stream with 5-10 m / s. Corn cob crushing processing mode in a rotating drum: temperature, ° С35 duration poured, ppm Processing charred shredded on vibrating screen: duration, min 2 vibration frequency fluctuations / min60 Air blowing, m / s 5 Time of rolling the alumina mixture with a thickness of 3 mm, minA 350 1 / 350 1 / 12,000 10 3.5 7.5