Process for stripping uranium from an alkyl pyrophosphoric acid
Creators
Description
A process is described for the recovery of tetravalent uranium from wet-process phosphoric acid utilizing an alkyl pyrophosphoric acid extractant or the like. After extracting the tetravalent uranium from wet-process acid, iron is stripped from the pregnant extractant into an oxalic acid stripping solution and then the tetravalent uranium is stripped from the pregnant extractant into an oxalate stripping solution. The oxalate stripping solution is an aqueous solution of an alkali metal or ammonium oxalate. The barren extractant is recycled for contacting with fresh wet-process acid. The uranium is oxidized and then precipitated in the oxalate stripping solution. The precipitated solids are separated from the solution, and the uranium is dried to a UO3 product
Availability note (English)
Available from Patents Office, Private Bag X400, Pretoria, 0001.Additional details
Publishing Information
- Imprint Pagination
- 23 p.
- IPC:
- Int. Cl. C 22 B; C 01 B.
- IPC
- Int. Cl. C 22 B; C 01 B.
- Patent number
- ZA patent document 82/2830/A/
INIS
- Country of Publication
- South Africa
- Country of Input or Organization
- South Africa
- INIS RN
- 14786324
- Subject category
- S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- ALKALI METALS; AQUEOUS SOLUTIONS; IRON; OXALATES; PHOSPHORIC ACID; SOLVENT EXTRACTION; URANIUM
- Descriptors DEC
- ACTINIDES; CARBOXYLIC ACID SALTS; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; METALS; MIXTURES; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; SEPARATION PROCESSES; SOLUTIONS; TRANSITION ELEMENTS
Optional Information
- Notes
- Priority 27 May 1981 United States. No. 267,473.