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:
Apr. 25, 2000
Filed:
Nov. 27, 1998
Applicant:
Inventor:
David L Jones, Delta, CA;
Assignee:
Cominco Engineering Services Ltd., Vancouver, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C22B / ; C22B / ;
U.S. Cl.
CPC ...
423139 ; 423157 ;
Abstract
A process for the extraction of nickel and/or cobalt values from a solution comprises the steps of effecting a cobalt solvent extraction in the presence of magnesium ions with a cobalt extractant to produce a cobalt extractant loaded with cobalt ions and a first raffinate containing nickel and magnesium ions in solution. The first raffinate is subjected to magnesium solvent extraction with a magnesium extractant to produce a magnesium extractant loaded with magnesium and cobalt ions and a second raffinate. The second raffinate is subjected to nickel solvent extraction with a nickel extractant to produce a nickel loaded extractant and a third raffinate.