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. 04, 1982
Filed:
Apr. 14, 1980
Applicant:
Inventors:
William K Tolley, Arlington Heights, IL (US);
Francisco J Corral, Des Plaines, IL (US);
Assignee:
UOP Inc., Des Plaines, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
423150 ; 75119 ;
Abstract
In a hydrometallurgical process for the recovery of metal values from a metal bearing source in which a metal bearing source is treated at a temperature in the range of from about 300.degree. to about 900.degree. C. in a reducing atmosphere in contact with an additive such as a hydrogen halide and sulfur followed by cooling and extracting the source with a basic or acidic solution, the recovery of the desired metal value may be improved by adding the hydrogen halide to the source at a temperature below about 500.degree. C.