Selective bismuth and antimony removal from copper electrolyte

Details Selective bismuth and antimony removal from copper electrolyte Selective bismuth and antimony removal from copper electrolyte

C - Chemistry, Metallurgy

25

C

C25C 1/00 (2006.01) C22B 3/44 (2006.01) C22B 15/00 (2006.01) C25C 1/12 (2006.01) C25C 7/06 (2006.01)

Patent

CA 2161308

The present invention is concerned with a process for selectively removing antimony, bismuth, or both, from acidic solution by submitting the solution to oxidizing conditions thereby causing the selective precipitation of antimony and bismuth; filtering precipitated antimony and bismuth, and submitting the oxidized solution to reducing conditions before it is returned to the electrorefining cell.

La présente invention concerne un procédé pour l'élimination sélective de l'antimoine, du bismuth, ou des deux, d'une solution acide en exposant la solution à des conditions oxydantes, ce qui entraîne la précipitation sélective de l'antimoine et du bismuth; l'antimoine et le bismuth précipités sont filtrés et la solution oxydée est exposée à des conditions réductrices avant d'être retournée dans la cellule d'affinage électrolytique.

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