Leaching of copper dross

C - Chemistry – Metallurgy – 22 – B

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C22B 15/00 (2006.01)

Patent

CA 1086072

A method of leaching a copper dross separated from blast furnace lead bullion, which dross is relatively high in sulphur, by leaching the dross with an aqueous solution of ammonium sulphate and ammonium hydroxide.

256766

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