Uranium recovery from wet-process phosphoric acid

Details Uranium recovery from wet-process phosphoric acid Uranium recovery from wet-process phosphoric acid

1977-08-25

1979-12-25

Miller, Edward A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 10, 423 11, 423 15, C01G 4300

Patent

active

041805453

ABSTRACT:
A method of recovering uranium from wet-process phosphoric acid wherein the acid is treated with a mixture of an ammonium salt or ammonia, a reducing agent, and then a miscible solvent. Solids are separated from the phosphoric acid liquid phase. The solid consists of a mixture of metal phosphates and uranium. It is washed free of adhering phosphoric acid with fresh miscible solvent. The solid is dried and dissolved in acid whereupon uranium is recovered from the solution. Miscible solvent and water are distilled away from the phosphoric acid. The distillate is rectified and water discarded. All miscible solvent is recovered for recycle.

REFERENCES:
patent: 2860031 (1958-11-01), Grinstead
patent: 3835214 (1974-09-01), Hurst et al.
patent: 3880980 (1975-04-01), Wamser
patent: 3961027 (1976-06-01), Crossley
patent: 3966873 (1976-06-01), Elikan et al.
patent: 3975178 (1976-08-01), McCullough et al.
patent: 4002716 (1977-01-01), Sundar

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