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:
Feb. 25, 2014
Filed:
Feb. 10, 2011
Neil Nebeker, Hayden, AZ (US);
Matthew L. Rodgers, Midland, MI (US);
Charles R. Marston, Midland, MI (US);
Neil Nebeker, Hayden, AZ (US);
Matthew L. Rodgers, Midland, MI (US);
Charles R. Marston, Midland, MI (US);
Asarco LLC, Tucson, AZ (US);
Abstract
A method for extracting cobalt from copper raffinate. First, a supply of raffinate containing at least cobalt, copper, ferric iron and nickel, is provided. The raffinate is pretreated by one or all of raising the raffinate pH level; removing solids; and, reducing ferric iron to ferrous iron. Substantially all copper is removed using first ion exchange resin selective for copper. A second ion exchange resin selective for both cobalt and nickel is used to remove the cobalt and nickel. Cobalt and nickel are separately eluted from the second ion exchange resin.