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:
Dec. 23, 1980
Filed:
Feb. 16, 1979
Applicant:
Inventors:
Gustavo A Meyer, Arvada, CO (US);
John R Carlberg, Arvada, CO (US);
Cvetko Nikolic, Harvey, LA (US);
Assignee:
Amax Inc., Greenwich, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
423150 ; 423 47 ; 423 48 ; 423154 ; 75-6 ; 75119 ;
Abstract
A process is provided for leaching nickeliferous sulfide material, such as NiS precipitate and thermally activated nickel sulfide material, e.g., nickel matte, the process comprising subjecting nickeliferous sulfide material in the finely divided state to leaching in hydrochloric acid of concentration ranging from about 3 N to 8 N at a temperature of over 50.degree. C., the temperature and acid concentration being selected to dissolve at least about 50% by weight of the total contained nickel.