Recovery of uranium from wet-process phosphoric acid

Details Recovery of uranium from wet-process phosphoric acid Recovery of uranium from wet-process phosphoric acid

1981-01-30

1984-07-17

Miller, Edward A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 8, C01G 4300

Patent

active

044605498

ABSTRACT:
The present invention relates to a process for recovering uranium from raffinate which is obtained by extracting phosphoric acid from a uranium-containing wet-process phosphoric acid with the aid of organic extractants and separating the resulting organic phosphoric acid extract from residue not taken up by the extract. To this end, the raffinate residue is subjected to thermal treatment and thereby freed from dissolved or emulsified residual extractant. Next, the raffinate is treated with a water-immiscible solvent to extract the uranium, and the extracted uranium is separated from the undissolved raffinate portion.

REFERENCES:
patent: 2859094 (1958-11-01), Schmitt et al.
patent: 3880980 (1975-04-01), Wamser
patent: 3937783 (1976-02-01), Wamser et al.
patent: 3965238 (1976-06-01), Tabata et al.
patent: 4233278 (1980-11-01), Korchnak
patent: 4243637 (1981-06-01), Bradford et al.

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