RAW MATERIALS MIXTURE FOR PRODUCTION OF PHOSPHATE BINDER Russian patent published in 1997 - IPC

FIELD: production of refractory materials. SUBSTANCE: raw materials mixture comprises, mas.% finely dispersed waste of petrochemical industry, 42.5-59.8; phosphoric acid, 25-50; titanium dioxide, 6-15; boron-containing component (as calculated for boron dioxide), 2.2-5. Waste of petrochemical industry comprises aluminium oxide Al₂O₃ and chromium oxide Cr₂O₃, their quantities are 85-87 and 13-15 mas.%, respectively. Calcium borate or boric acid are used as said boron-containing component. EFFECT: improved quality. 3 cl, 1 tbl