METHOD TO PRODUCE HEAT INSULATION STRUCTURAL BUILDING MATERIAL Russian patent published in 2012 - IPC C04B40/00 C04B28/26 C04B111/40 C04B111/20 

FIELD: construction.

SUBSTANCE: method to produce a heat insulation structural building material includes mixing of siliceous rock and an alkaline component to produce a homogeneous mass, subsequent thermal treatment at its temperature of 500-600°C, grinding of the produced silicate material, besides, after grinding of the silicate material the produced powder is partially hydrolysed by adding water in it in amount of 4-12 wt % from the mass of dry powder in process of mixing until the powder swells, filling into refractory moulds and annealing. Besides, mixing of the produced powder is preferably carried out in an agitator of a mixer type, filling is carried out into a refractory mould, where reinforcement of refractory metal is fixed, and subsequent annealing is carried out at 750-850°C, preferably steel reinforcement shall be used, reinforcement from refractory material coated with liquid glass is used.

EFFECT: reduced metal intensity of the process to produce a material having more even porosity.

5 cl