MIXTURE FOR MANUFACTURE OF HEAT-INSULATING INSERTS AND METHOD OF MIXTURE PREPARATION Russian patent published in 1997 - IPC

FIELD: ferrous metallurgy, particular, compositions of heat-insulating mixtures applicable in manufacture of heat-insulating inserts used in teeming of metal. SUBSTANCE: mixture in form of refractory filler has diatomite with the following quantities of components, mas.%: diatomite 90-99.9; red-burning clay 0.1-10. The method of preparation of the offered mixture consists in that diatomite is ground together with red- burning clay, then, they are mixed up to fluidized state, and obtained mixture is heated up to 50-90 C and wetted with water up to 20-30% of water content. EFFECT: higher efficiency. 2 cl, 2 tbl