RAW MIX FOR MANUFACTURING REFRACTORY PRODUCTS Russian patent published in 1999 - IPC

FIELD: non-ferrous metallurgy, more particularly casting and electrolytic production of aluminium or alloys thereof. SUBSTANCE: raw mix comprises graphite, aluminium hydroxide, fireclay, alumochromophosphate binder and boric acid. Raw mix further comprises crystalline silicon having grain size of not greater than 0.5 mm, ratio of compounds being as follows; wt %: graphite, 35- 40; aluminium hydroxide, 30-35; fireclay, 10-15; crystalline silicon having grain size on not greater than 0.5 mm, 8-12; alumochromophosphate binder, 3-4; and boric acid, 1.4-2.5. EFFECT: longer service life of refractory products contacting with liquid aluminium or and alloys thereof and molten fluorine-containing salts due to greater strength and higher erosion resistance thereof.