Apparatus and process for making high purity nickel
AssigneeChemical Vapour Metal Refining Inc.
InventorsWalter Curlook, Dmitri Terekhov, Sergiy Kovtun, Olujide Babatunde Olurin, Nanthakumar Victor Emmanuel
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Abstract
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.
Claims8
A method of producing an activated metallic nickel from a solid metallic nickel for subsequent reaction with carbon monoxide, said method comprising treating said solid metallic nickel with hydrogen sulphide at a pressure selected from 100 to 300 kPa and a temperature selected from 20 -150° C. for an effective activation period of time to produce said activated metallic nickel.
Dependencies are inferred from the claim text.