Recovery of heavy metals from spent alumina

Details Recovery of heavy metals from spent alumina Recovery of heavy metals from spent alumina

C - Chemistry, Metallurgy

22

B

23/240, 53/354,

C22B 61/00 (2006.01) B01J 21/20 (2006.01) C09K 3/14 (2006.01) C22B 7/00 (2006.01) F27B 3/04 (2006.01)

Patent

CA 1169663

Abstract The invention provides a method wherein alumina- containing slag from melting of spent alumina catalyst material is transported to a second furnace for finishing to satisfactory temperature, composition and quantity for casting as an abrasive material or cast refractory, In one embodiment of the invention, the molten alumina slag material is cast into an inclined trough for direct delivery from the spent catalyst furnace to the abrasive or refractory furnace for finishing.

384525

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