Apparatus and process for making high purity nickel

C - Chemistry – Metallurgy – 22 – B

Patent

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C22B 23/06 (2006.01) C22B 5/08 (2006.01) C22B 5/12 (2006.01) C22B 5/20 (2006.01) C22B 9/05 (2006.01)

Patent

CA 2585541

An improved method of reducing a mixed metal oxide composition comprising oxides of nickel, cobalt, copper and iron in a hydrogen atmosphere to produce a mixture of the respective metals, the improvement wherein the atmosphere further comprises water vapour at a concentration, temperature and time to effect selective reduction of the oxides of nickel cobalt and copper relative to the iron oxide to produce the metallic mixture having a reduced ratio of metallic iron relative to metallic nickel, cobalt and copper.

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