Method of recovering uranium from wet process phosphoric acid with enhanced content of uranium
In preparing wet process phosphoric acid by decomposing a phosphate rock containing uranium with sulfuric acid and phosphoric acid on condition that hemihydrate gypsum is formed in an acid solution either at the stage of decomposing the phosphate rock or subsequently, uranium contained in the phosphate rock can almost entirely be retained in the obtained phosphoric acid solution by forming the hemihydrate gypsum in the presence of an oxidizing agent, such as a soluble chlorate, hydrogen peroxide or oxygen gas, in the acid solution in a quantity sufficient to render the entire uranium dissolved in the acid solution hexavalent because hemihydrate gypsum adsorbs almost exclusively tetravalent ions of uranium. The uranium is then recovered.
- Assignee:
- Central Glass Co. Ltd. (Japan)
- Patent Number(s):
- US 4427641
- Application Number:
- TRN: 84-016103
- OSTI ID:
- 6708963
- Resource Relation:
- Patent Priority Date: Priority date 28 Jul 1980, Japan; Other Information: PAT-APPL-287151
- Country of Publication:
- United States
- Language:
- English
Similar Records
Uranium control in phosphogypsum. [In wet-process phosphoric acid production]
Uranium recovery from wet process phosphoric acid
Related Subjects
GYPSUM
ADSORPTION
PHOSPHATE ROCKS
LEACHING
URANIUM
DISSOLUTION
RECOVERY
SOLVENT EXTRACTION
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
HYDROGEN PEROXIDE
ION EXCHANGE
OXIDIZERS
OXYGEN
PHOSPHORIC ACID
REDUCING AGENTS
SULFUR CONTENT
SULFURIC ACID
ACTINIDES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM SULFATES
ELEMENTS
EXTRACTION
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METALS
MINERALS
NONMETALS
OXYGEN COMPOUNDS
PEROXIDES
ROCKS
SEDIMENTARY ROCKS
SEPARATION PROCESSES
SORPTION
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
SYNTHESIS
050400* - Nuclear Fuels- Feed Processing