METHOD OF PRODUCING BUILDING ARTICLES Russian patent published in 1994 - IPC

FIELD: building materials production. SUBSTANCE: silicate block (its quantity being 10-20% of raw materials mass) and mineral filler are ground cooperatively, particle's collision rate being 100-500 m/s. The process is followed by wetting and by formation of articles. Then articles are sustained at 150-180 C within 5-6 h and dried at 150-180 C within 1-1.5 h. Waste of soda production (its quantity being 80-90% ) or lime stone (its quantity being 55-85% ) and pyrite cinders (its quantity being 5-25% ) are used as mineral filler. EFFECT: increases article's strength. 2 tbl