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:
Jun. 05, 2001
Filed:
Sep. 30, 1999
Applicant:
Inventor:
Gary A. Kordosky, Tucson, AZ (US);
Assignee:
Henkel Corporation, Gulph Mills, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 1/08 ; B01D 1/100 ; C02F 1/42 ;
U.S. Cl.
CPC ...
C07F 1/08 ; B01D 1/100 ; C02F 1/42 ;
Abstract
In an acid leach copper extraction circuit for leaching copper values from copper ores using a water-immiscible organic solvent solution containing a copper extractant and an acid strip solution, the improvement wherein the stripped organic solvent solution is contacted with copper-free fresh aqueous acid to remove additional copper values therefrom, and then the resulting super stripped organic and the copper-containing aqueous acid are sent to the copper extraction circuit.