Process for oxidizing a metal of variable valence by controlled

Details Process for oxidizing a metal of variable valence by controlled Process for oxidizing a metal of variable valence by controlled

1979-04-19

1981-01-06

Sebastian, Leland A.

Chemistry: electrical and wave energy

Processes and products

204 1R, 204 96, 204105R, C25C 122

Patent

active

042434947

ABSTRACT:
A process for oxidizing a metal of variable valence to a higher valence state by electrochemical means. More particularly, a process for oxidizing a metal of variable valence, such as, for example, uranium or vanadium contained in wet process phosphoric acid to a higher valence state for extraction by subsequent contact with complex organic extractants. The wet process phosphoric acid is oxidized in an electrolytic cell operated at a controlled potential via use of a reference electrode. The cell comprises a tank having at least one anode and at least one cathode, said anode and cathode having a ratio of surface areas exposed to the electrolyte in said cell of from at least about 100:1.

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patent: 3770612 (1973-11-01), Gray et al.
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