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:
Aug. 10, 1976
Filed:
Jan. 15, 1975
Applicant:
Inventor:
George J Snell, Fords, NJ (US);
Assignee:
The Lummus Company, Bloomfield, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
423 27 ; 423 41 ; 4235 / ; 7511 / ;
Abstract
In the oxidative leaching of copper ores with a silver catalyst initially dissolved in the leaching liquor, all or a portion of the silver precipitates and is recovered with the tailings. Elemental sulfur is extracted from the tailings, and the tailings are treated with concentrated sulfuric acid in the presence of oxygen to recover silver values for recycle to the leaching.