METHOD TO PRODUCE GLASS HAYDITE AND POROUS CERAMICS FROM FOSSIL MEAL AND SILICA CLAY Russian patent published in 2014 - IPC C04B38/00 C04B28/26 C04B20/04 

FIELD: construction.

SUBSTANCE: invention relates to construction industry, to the method to produce glass haydite and porous ceramics. In the method to produce glass haydite and porous ceramics including preliminary grinding of silicon-containing mixture of fossil meal and silica clay and its subsequent mixing with an alkaline component - caustic soda, granulation of the produced mixture, swelling and sintering in a rotary furnace, the specified silicon-containing mixture is previously exposed to grinding to fraction of 3-5 mm with subsequent drying at temperature of 600°C to moisture of 10%, repeated grinding to produce powder of fraction of 0.315 mm, then the produced powder is serially exposed to granulation and chemicalisation in a turbulent granulating machine, where the power is supplied in a dosed manner, as well as caustic soda solution, with production of granules of fraction from 1.5 to 2.5 mm, then the produced granules are exposed to repeated granulation and chemicalisation in a plate granulating machine, where the produced granules are supplied in a dosed manner, the specified powder and caustic soda solution, with production of granules of final fraction from 5 to 7 mm with moisture of 45% by mass, which are exposed to drying, swelling and sintering to achievement of swelling coefficient from 2.2 to 5.5 depending on the specified formula, in a rotary hearth furnace with temperature of 740-760°C for 15-20 minutes, or thermal treatment of granules is carried out at an electric conveyor in process of their delivery to a consumer.

EFFECT: production of semi-dry granules of high strength with low water content in a solution for chemicalisation of components, combination of processes of chemicalisation and granulation.