REFRACTORY MORTAR POWDER Russian patent published in 1997 - IPC

FIELD: refractory materials. SUBSTANCE: refractory mortar powder used for joining ceramic and refractory objects includes (i) alumina refractory filler in the form of corundum and fine-dispersion aluminosilicate cake composed, wt.-%): corundum, 20-40; mullite, 50-70; glass phase, 5-15; and (ii) phosphate binder. On the whole, mortar powder consists, wt.-%: corundum, 40-60; aluminosilicate cake, 15-30; and phosphate binder, 20-35. As fine- dispersion aluminosilicate cake, one may use dust from electrofilters employed for firing high-alumina materials. EFFECT: improved composition. 2 cl, 2 tbl