Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Eric Girvan Roche0
Philip E. Grazier0
Date of Patent
April 15, 2008
0Patent Application Number
108548020
Date Filed
May 27, 2004
0Patent Primary Examiner
Patent abstract
A process is provided for the recovery of a metallic nickel product in a solvent extraction process which includes the steps of forming a nickel ammine complex by stripping nickel from a nickel loaded organic phase with a high strength ammonia solution and then reducing the nickel ammine complex with hydrogen from the high strength ammonia solution to produce a metallic nickel product. By virtue of the present process, a reductive precipitation of nickel by hydrogen is obtained so as to recover a metallic nickel product, and the process is advantageous in that it will allow for commercial processes wherein nickel may be recovered by hydrogen reduction based on high strength ammonia solutions.
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