Treatment of solutions containing impure metals

Details Treatment of solutions containing impure metals Treatment of solutions containing impure metals

1976-03-23

1977-12-06

Wyse, Thomas G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

423 24, 423 87, 75117, B01D 1104

Patent

active

040615642

ABSTRACT:
A process for treating an aqueous acid solution containing at least one element selected from the group of elements consisting of As, Sb and Bi, said process comprising contacting the aqueous solution with an organic phase comprising an organophosphoric compound having the general formula (RO).sub.3 P = O wherein R represents an unsubstituted or substituted alkyl, aryl or aralkyl group, while maintaining a temperature of between 10.degree. and 60.degree. C and an organic phase/aqueous phase ratio of between 0.1 and 5, whereby the elements of said group and acid are extracted from the aqueous phase to the organic phase, and separating the resultant pregnant organic phase from the aqueous phase.

REFERENCES:
patent: 2805936 (1957-09-01), Schaufelberger
patent: 3249399 (1966-05-01), Hoffmann et al.
patent: 3573182 (1971-03-01), Churchward et al.
patent: 3912801 (1975-10-01), Stephens
patent: 3988225 (1976-10-01), Schulze
patent: 3989607 (1976-11-01), Bush et al.
Chemical Abstracts 78: 19131a, (1973).

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