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:
Mar. 21, 1995
Filed:
Oct. 15, 1992
Applicant:
Inventor:
Enzo Coltrinari, Golden, CO (US);
Assignee:
Hazen Research, Inc., Golden, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
423139 ; 423140 ; 423157 ; 210638 ; 502 29 ;
Abstract
Discussed is a process for recovering metals and metal-containing products, such as a nickel sulfate product, from aqueous feed solutions comprising two or more dissolved metals. A selected metal is isolated and in a purified form in an aqueous raffinate phase from solvent extraction of nonselected metals using an organic phase containing a salt of an organic acid and the selected metal. Aqueous feed solution may result from leaching operations, including leaching of nickel-containing catalyst, such as catalyst used in hydrogenation of vegetable oils.