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:
Jul. 17, 1984
Filed:
Feb. 16, 1983
Applicant:
Inventors:
Douglas R Shaw, Arvada, CO (US);
John F Spisak, Arvada, CO (US);
Jerome P Downey, Parker, CO (US);
Gary E Butts, Arvada, CO (US);
Assignee:
Anschutz Mining Corporation, Denver, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03B / ;
U.S. Cl.
CPC ...
209-9 ; 209167 ; 252 61 ; 75-2 ;
Abstract
A sequential flotation process for the recovery of high-grade concentrates of copper, lead and cobalt-nickel from sulfide ores is provided. A primary grind ore pulp is conditioned with SO.sub.2 as H.sub.2 SO.sub.3 under intense aeration, and the conditioned pulp subjected to sequential flotation, with regrinding and conditioning of a copper rougher concentrate obtained in the first flotation step for copper.