Regeneration of organic extractants containing .alpha.-hydroxyox

Details Regeneration of organic extractants containing .alpha.-hydroxyox Regeneration of organic extractants containing .alpha.-hydroxyox

1977-02-28

1978-08-01

Hearn, Brian

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

423DIG14, 75101BE, 260566A, C01G 5100, C01G 5300, C07C13114

Patent

active

041043596

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.

REFERENCES:
patent: 2270204 (1942-01-01), Schlack
patent: 2579851 (1951-12-01), Novotny
patent: 4018865 (1977-04-01), Gallacher
Smith "The Chemisty of Open-Chain Organic Nitrogen Compounds" vol. II, W.A. Benjamin, Inc. N.Y., 1966, pp. 36-40, 63, 64.

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