Recovery of uranium from wet-process phosphoric acid
Uranium values are recovered as uranyl peroxide from wet process phosphoric acid by a solvent extraction-precipitation process. The preferred form of this process comprises a first solvent extraction with depa-topo followed by reductive stripping of the extractant with fe++ - containing phosphoric acid. After reoxidation, the uranium-containing aqueous stripping solution is extracted again with depa-topo and the pregnant organic is then stripped with a dilute ammonium carbonate solution. The resulting ammonium uranyl tricarbonate solution is then acidified, with special kerosene treatment to prevent wax formation, and the acidified solution is reacted with H/sub 2/O/sub 2/ to precipitate a uranyl peroxide compound.
- Assignee:
- International Minerals and Chemical Corp
- Patent Number(s):
- US 4302427
- Application Number:
- TRN: 82-004088
- OSTI ID:
- 5747921
- Resource Relation:
- Patent File Date: Filed date 19 Mar 1979; Other Information: PAT-APPL-022079
- Country of Publication:
- United States
- Language:
- English
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Process for the recovery of uranium from wet-process phosphoric acid
Process for recovering uranium from wet process phosphoric acid
Related Subjects
PHOSPHORIC ACID
URANIUM
RECOVERY
REDOX REACTIONS
SOLVENT EXTRACTION
PRECIPITATION
ACTINIDES
CHEMICAL REACTIONS
ELEMENTS
EXTRACTION
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METALS
SEPARATION PROCESSES
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