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. 08, 1990
Filed:
Sep. 13, 1989
Applicant:
Inventors:
Gopalan Ramadorai, Elko, NV (US);
Brian Ball, Salt Lake City, UT (US);
Ronald L Atwood, Farmington, UT (US);
Rong-Yu Wan, Salt Lake City, UT (US);
Sevket Acar, Salt Lake City, UT (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
423 29 ; 204109 ; 423 25 ; 423 27 ; 423 29 ; 423 30 ; 423 31 ;
Abstract
Refractory carbonaceous sulfide ores are treated in a manner so as to improve gold recovery by a treatment in specific combination of steps whereby the ore is treated with chlorine after pretreatment and before cyanidation; the particular steps in the treatment of the ore have been found to be necessary as the conventional pretreatment will not improve the yields on any economic basis.