METHOD OF MANUFACTURING ALUMINOSILICATE AND CORUNDUM REFRACTORY PRODUCTS Russian patent published in 2000 - IPC

FIELD: refractory materials. SUBSTANCE: in manufacture process, high-concentration binding suspensions with moisture content 12-20% are used based on corresponding refractory materials (bauxite, mullite, chamotte) with different contents of aluminum oxide and other compounds and which also contain 20-50% of suspended particles up to 5 mcm in size. Original suspensions are plasticized by additives of refractory clay (2-10%) and supplemented by superfine quartz glass or aluminum oxide (2-10%) or mixture of indicated components. Formation mix is prepared from 20-45% of above binding material and 55-80% of filler. High-density semiproduct is thus prepared capable of acquiring after just a low-temperature heat treatment (1000-1200 C) desired working characteristics. New refractories are distinguished by elevated density and strength. EFFECT: improved working characteristics. 4 cl, 4 ex