BUILTUP REFRACTORY PRODUCT Russian patent published in 2004 - IPC

FIELD: processes for making refractory materials for metal continuous casting plants, possibly apparatuses in which melt metal is blown off by means of gases. SUBSTANCE: builtup refractory product for metal casting includes at least two layers made of different-composition charge containing, mass%: melt corundum with fraction size 0.3 - 0 mm, 65 - 75; graphite, 8 - 12; petroleum coke with fraction size 0.5 - 0.1 mm and with ash content no more than 1.5%, 8 - 12; crystalline silicon with fraction size less than 0.088 mm, 1 - 8; silicon carbide with fraction size no less than 0.2 mm, 2 - 6; powdered phenol binder 2.5 - 4; liquid organic binder (in addition to 100%), 1 - 5. EFFECT: improved corrosion and heat resistance of gas permeable layer of builtup refractory product for metal continuous casting at high gas permeability. 2 tbl