Production of aluminum-silicon alloys in an electrolytic cell

Details Production of aluminum-silicon alloys in an electrolytic cell Production of aluminum-silicon alloys in an electrolytic cell

C - Chemistry, Metallurgy

25

C

204/52

C25C 7/06 (2006.01) C25C 3/00 (2006.01) C25C 3/36 (2006.01)

Patent

CA 1083994

ABSTRACT OF THE DISCLOSURE There is disclosed a method of achieving improved operation of aluminum reduction cells being used to produce aluminum-silicon alloys. The method includes the steps of feeding alumina and silica into a molten salt bath of the cell and passing electric current through the bath, wherein the feeding of alumina comprises introducing approximately equal incremental amounts of alumina effective in the aggregate to supply the cell's alumina requirements, the feeding of silica comprises introducing approximately equal incremental amounts of silica effective in the aggregate to supply the cell's corresponding requirements of silica to produce an alloy of the desired silicon content, and these incremental feeding operations are conducted on a coordinated basis such that at times substantially only alumina is added to the bath and the feeding of silica is deferred, while at other times both alumina and silica are added to the bath.

261052

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