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:
May. 05, 1992
Filed:
Dec. 13, 1990
Applicant:
Inventor:
Richard O Huch, Tucson, AZ (US);
Assignee:
Cyprus Minerals Company, Englewood, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B03D / ; B03D / ; B03D / ; B03D / ;
U.S. Cl.
CPC ...
209167 ; 209166 ;
Abstract
The present invention involves a method for separating copper sulfide from rimmed iron sulfide by flotation. Prior to flotation, a slurry containing the sulfides is oxidized and conditioned to achieve a pH greater than pH 9. Thereafter, the slurry is subjected to a froth floatation process by which a copper sulfide, such as chalcopyrite, concentrate is recovered.