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:
Jan. 08, 2013
Filed:
Jul. 12, 2012
Owen Stewart Tinkler, Tempe, AZ (US);
Keith Alan Cramer, Whippany, NJ (US);
Peter Eric Tetlow, Phoenix, AZ (US);
John Campbell, Rochdale, GB;
Charles J. Maes, Phoenix, AZ (US);
Owen Stewart Tinkler, Tempe, AZ (US);
Keith Alan Cramer, Whippany, NJ (US);
Peter Eric Tetlow, Phoenix, AZ (US);
John Campbell, Rochdale, GB;
Charles J. Maes, Phoenix, AZ (US);
Cytec Technology Corp., Wilmington, DE (US);
Abstract
Processes for improving copper/iron selectivity in a solvent extraction circuit by contacting an acidic aqueous solution containing dissolved copper and iron ions with a solvent extraction composition including an orthohydroxyaryloxime, a selectivity modifier, and an equilibrium modifier, wherein the ratio of selectivity modifier to orthohydroxyaryloxime is from 0.001 to 0.05, thereby decreasing the copper:iron transfer ratio, are provided herein.