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. 15, 1984
Filed:
Sep. 12, 1982
Applicant:
Inventors:
Joseph G Day, Holmer Green, GB;
Jeffrey R Taylor, Reading, GB;
Assignee:
Matthey Rustenburg Refiners (Pty) Limited, Johannesburg, ZA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75 63 ; 75 83 ;
Abstract
This invention relates to the recovery of platinum group metals and Au and Ag from high sulphur content base metal sulphide ore residues and also to the separation of Ag from the other precious metals referred to. The process for the recovery of platinum group metals, silver and gold from a base metal sulphide-containing leach residue comprises: