METHOD OF PRODUCING AGGREGATE FOR CONCRETE Russian patent published in 2017 - IPC C04B20/06 C04B33/132 C04B33/16 C04B38/06 

FIELD: chemistry.

SUBSTANCE: method of producing an aggregate for concrete includes the preparation of mass on the basis of fusible clays capable to slough in conditions of heat treatment, the introduction of ground and sifted through sieve No. 063 grit of silica brick in the amount of 2-8% of the quantity, moistening with bitumen and/or tarry emulsion of up to 17-26%, forming granules, drying the granules to a moisture content of 1-6%, the calcination of the granules at a temperature of 900-1100°C and cooling the granules to a temperature of 20-50°C.

EFFECT: intensification of the aggregate calcinating process, the formation of a developed porous structure.

3 ex