Method of recovering zinc from a material containing zinc...

Details Method of recovering zinc from a material containing zinc... Method of recovering zinc from a material containing zinc...

C - Chemistry, Metallurgy

22

B

53/328, 204/74

C22B 19/20 (2006.01) C01G 3/00 (2006.01) C01G 9/06 (2006.01) C22B 3/26 (2006.01) C22B 3/38 (2006.01) C22B 15/00 (2006.01) C25C 1/16 (2006.01)

Patent

CA 1090143

Abstract: Zinc is recovered from a material contain- ing zinc and iron. The material is leached with sulphuric acid to produce a final pH or 3 - 5.5. Zinc powder is added to the leaching solution to precipitate polluting metals. Zinc is now extracted with a solution or a dialkyl phosphoric acid in an organic solvent. Zinc is extracted from the organic solution with sulphuric acid. Zinc is recovered from the sulphuric acid solution as metal or as zinc sulphate.

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