Process for recovering uranium from wet process phosphoric acid

Details Process for recovering uranium from wet process phosphoric acid Process for recovering uranium from wet process phosphoric acid

1977-10-25

1981-03-24

Miller, Edward A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 15, 423 17, C01G 4300

Patent

active

042580145

ABSTRACT:
The invention is an improvement in the process for recovering uranyl uranium from solutions in which the uranyl uranium is recovered with an liquid-liquid solvent extraction agent dissolved in an inert solvent, the loaded agent scrubbed with water, the scrubbed agent stripped with ammonium carbonate solution to form a slurry of ammonium uranyl tricarbonate, the stripped agent returned to the liquid-liquid solvent extraction step, and the ammonium uranyl tricarbonate calcined to a uranium oxide product, the improvement which comprises stripping the uranium from the ion exchange agent with an alkali metal carbonate rather than ammonium carbonate, scrubbing the loaded agent with acidified alkali carbonate strip solution prior to stripping, and regenerating the stripped liquid-liquid solvent extraction agent with a mineral acid before return to the liquid-liquid solvent extraction circuit.

REFERENCES:
patent: 2859094 (1950-11-01), Schmitt et al.
patent: 2860031 (1958-11-01), Grinstead
patent: 3243257 (1966-03-01), Coleman
patent: 3790658 (1974-02-01), Fox et al.
patent: 3835214 (1974-09-01), Hurst et al.
patent: 3836476 (1974-09-01), Baldwin et al.
patent: 4002716 (1977-01-01), Sundar
patent: 4105741 (1978-08-01), Wiewiorowski et al.

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