The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2015
Filed:
May. 20, 2010
David Llewellyn Jones, Delta, CA;
Tannice Marie Mccoy, Delta, CA;
Keith Edward Mayhew, Delta, CA;
Chu Yong Cheng, Beeliar, AU;
Keith Raymond Barnard, Como, AU;
Wensheng Zhang, Willetton, AU;
David Llewellyn Jones, Delta, CA;
Tannice Marie McCoy, Delta, CA;
Keith Edward Mayhew, Delta, CA;
Chu Yong Cheng, Beeliar, AU;
Keith Raymond Barnard, Como, AU;
Wensheng Zhang, Willetton, AU;
CESL Limited, Vancouver, BC, CA;
Commonwealth Scientific and Industrial Research Organisation, Campbell, Australian Capital Territory, AU;
Abstract
A process for separating Co from Ni in an aqueous solution comprises subjecting the solution to extraction and using kinetic differences between Ni and Co in the extraction for achieving at least a partial separation of Co from Ni. This is effected by controlling the duration of the extraction so that a major portion of Co and a minor portion of Ni is extracted from the solution to produce a loaded extractant, enriched in Co and depleted in Ni compared to the feed solution, and a Co-depleted raffinate containing Ni. In a further embodiment, the invention utilizes kinetic differences between Ni and Co during striping for effecting separation of Ni and Co. The loaded extractant can be subjected to a bulk stripping or a selective stripping operation to obtain Co and Ni solutions from which Ni and Co can be recovered. The process may be incorporated in a hydrometallurgical process for the extraction of Ni and/or Co from an ore or concentrate containing Ni and Co.