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:
Aug. 01, 1978
Filed:
Feb. 28, 1977
Applicant:
Inventors:
Assignee:
Amax Inc., Greenwich, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ; C01G / ; C07C / ;
U.S. Cl.
CPC ...
423139 ; 423D / ; 7510 / ; 2605 / ;
Abstract
An organic liquid extractant of at least one oxime, selected from the group consisting of ketoximes and .alpha.-hydroxyoximes dissolved in an organic solvent, useful in separating nickel from cobalt in process solutions or in recovering both nickel and cobalt from process solutions, is treated with a salt of hydroxylamine at intervals to maintain the activity of the oxime in the extractant. The organic extractant can also contain sulfonic acids to facilitate treatment of more acid process solutions and is treated with a hydroxylamine salt to regenerate oxime degraded by the highly acid process solutions, the extractant itself and the concentrated acidic stripping solutions.