C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/308
C22B 3/40 (2006.01) C22B 3/26 (2006.01) C22B 3/30 (2006.01)
Patent
CA 1111825
ABSTRACT OF THE DISCLOSURE 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. (1)
295900
Davis Phillip K.
Freiser Henry
Leaver Helen S.
Amax Inc.
Gowling Lafleur Henderson Llp
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