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:
Oct. 21, 1980
Filed:
May. 07, 1979
Applicant:
Inventor:
Yoon T Auck, Tucson, AZ (US);
Assignee:
UOP Inc., Des Plaines, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75103 ; 75 / ; 75-7 ; 75 82 ; 75111 ; 75119 ; 423138 ; 423150 ;
Abstract
The recovery of metal values such as nickel from a metal bearing source such as lateritic ores in which the metal bearing source is subjected to a reductive roast at an elevated temperature in the range of from about 700.degree. to about 1300.degree. F. in contact with at least one additive and thereafter extracting the metal bearing source in an ammoniacal solution whereby the desired metal such as nickel is leached out and recovered, the yield of the desired metal may be increased by subjecting the source to an annealing process during the reductive roast thereof.