METHOD FOR PREPARING OF RAW MATERIALS MIXTURE FOR PRODUCTION OF CEMENT CLINKER Russian patent published in 1997 - IPC

FIELD: building materials production. SUBSTANCE: slime waste of soda caustic purification of sodium chloride liquor for electrolysis on the base of calcium carbonate, slime waste of production of chlorine and caustic on the base of bihydrous calcium sulfate, slime waste of production of acetylene of calcium carbide on the base of calcium hydroxide and slime waste of production of trichloroethylene on the base of calcium hydroxide and calcium chloride having mass ratio 1.0:0.14:2.0:1.1-1.0:0.42:5.0:3.3, respectively, are diluted by water to concentration 8-20 %. Thus prepared solution is treated by gas on the base of carbon dioxide, mass ratio of said slime solution and gas being 1.0:0.8-5.2. The process is carried out within 0.01-10 s at 40-100 C, it is followed by dehydration of slime wastes till moisture content is 45-65 % and by mixing with aluminium-ferrum silicate component at mass ratio 65:35-95:5, respectively. EFFECT: improved quality. 2 tbl