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:
Feb. 05, 1980
Filed:
Aug. 07, 1978
Applicant:
Inventor:
John C Stauter, Streamwood, IL (US);
Assignee:
UOP Inc., Des Plaines, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
423150 ; 75103 ; 75 82 ; 75119 ;
Abstract
Metal values may be recovered from metal bearing sources in a hydrometallurgical process in which a metal bearing source such as an ore and the like is reduced with a reductive roast only or with the presence of at least one additive at temperatures ranging from about 500.degree. to about 900.degree. C. Thereafter the reduced source is subjected to a leach in the presence of a basic leaching agent to extract the desired metals from the source. In the present invention, the basic leaching agent which is employed comprises an ammoniacal ammonium chloride solution.