Reductive stripping process for the recovery of uranium from wet

Details Reductive stripping process for the recovery of uranium from wet Reductive stripping process for the recovery of uranium from wet

1974-01-09

1984-09-25

Miller, Edward A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 8, 423260, C01G 4300

Patent

active

RE0316865

ABSTRACT:
A reductive stripping flow sheet for recovery of uranium from wet-process phosphoric acid is described. Uranium is stripped from a uranium-loaded organic phase by a redox reaction converting the uranyl to uranous ion. The uranous ion is reoxidized to the uranyl oxidation state to form an aqueous feed solution highly concentrated in uranium. Processing of this feed through a second solvent extraction cycle requires far less stripping reagent as compared to a flow sheet which does not include the reductive stripping reaction.

REFERENCES:
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patent: 3052513 (1962-09-01), Crouse
patent: 3243257 (1966-03-01), Coleman
patent: 3737513 (1973-06-01), Wiewiorowski et al.
Wick, "Plutonium Handbook", vol. II, pp. 525-552, Gordon & Bread (1967) New York.
Coleman, Atomic Energy Review, 2 (#2), pp. 3-50, IAEA (1964) Vienna.
Blake et al., "Synergistic Uranium Extractants: Combination of Neutral Organophosphorus Compounds with Dialkylphosphoric Acids", ORNL-2259, 42 pages, (1959).
Baes, J. Phys. Chem., 60, 805-6 (1956).

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