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. 23, 1999
Filed:
Jan. 26, 1996
Applicant:
Inventor:
David L Jones, Delta, CA;
Assignee:
Cominco Engineering Services Ltd., Vancouver, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; C22B / ; C22B / ; C22B / ;
U.S. Cl.
CPC ...
423 24 ; 2329 / ; 205570 ; 205582 ; 205583 ; 205584 ; 205604 ; 205606 ; 205607 ; 209165 ; 423 27 ; 423 41 ; 423 99 ; 4235782 ; 423109 ; 75743 ; 75744 ;
Abstract
A process for the extraction of a metal from an ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halogen ions and a source of bisulphate or sulphate ions, such as H.sub.2 SO.sub.4. The metals which can be extracted by the process comprises copper, as well as non-cuprous metals, such as zinc, and precious metals, such as gold and silver.