RU2572858C1 - Method of production of filler for concrete - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: method of production of a filler for concrete includes the preparation of a mass on the basis of fusible clays capable to swell in conditions of heat treatment, its moistening up to 17-26%, formation of granules, application on the surface of the formed granules of a dust layer which is formed at flax processing, drying of the granules down to the humidity of 1-6%, roasting of the granules at the temperature of 1100°C, cooling of the granules down to the temperature of 20-50°C.

EFFECT: prevention of the formed filler granules adhesion among themselves, increase of adhesion of the filler with cement stone.

1 ex

Description

The invention relates to the field of production of aggregates.

A known method of manufacturing a filler, including the preparation of clay mass, its moistening, molding of granules, drying, firing and cooling [1].

The objective of the invention is to prevent adhesion between the formed granules of the aggregate.

The technical result is achieved by the fact that according to the method of manufacturing aggregate for concrete, which includes preparing the mass on the basis of fusible clays that can swell under conditions of heat treatment, moisturizing it to 17-26%, molding granules, drying granules to a moisture content of 1-6%, firing granules at a temperature of ¹¹⁰⁰ C, cooling the granules to a temperature of 20-50 ^{° C,} the surface of the formed granules is applied a layer of dust formed during the processing of flax.

The method is illustrated by the following example.

On the basis of fusible clays capable of swelling under conditions of heat treatment, the clay mass is prepared, it is moistened to 17-26% and granules are formed using hole rollers. On the surface of the molded granules (immediately after the perforated rollers), for example, a layer of dust is formed by spraying in a stream of air by dry flax processing methods. The specified dust is a mixture consisting of organic particles and mineral (12-74%) residues with an admixture (up to 57%) of quartz [2]. A layer of dust prevents the aggregate granules from sticking together. The aggregate granules are dried to a moisture content of 1-6% and calcined, for example, in rotary kilns of a drum type at a temperature of 1100 ° C. During firing, the dust layer on the surface of the aggregate granules burns out, and the surface of the granules becomes irregular. Finished granules are cooled to a temperature of 20-50 ° C and sent to the finished product warehouse.

The aggregate obtained by the proposed method does not contain sticky granules, has an uneven surface, which improves its adhesion to the cement stone.

Information sources

1. Duderov I.G. General technology of silicates. - M .: Stroyizdat, 1987 .-- S. 314-321.

2. Directory of factory primary processing of flax / Ed. V.N. Khramtsova. - M .: Light and food industry, 1984. - S. 387.

Claims (1)

A method for producing a filler for concrete, comprising preparing pulp based low-melting clays, can swell in the heat-treatment conditions, its moisture to 17-26%, formation of granules, drying the granules to a moisture content of 1-6%, calcining the granules at a temperature of 1100 ^C, cooling granules to a temperature of 20-50 ^{° C,} characterized in that the surface of the formed granules is applied a layer of dust formed during the processing of flax.