Process for recovering uranium from wet process phosphoric acid

Patent · Tue Mar 24 04:00:00 EST 1981

OSTI ID:6311656

Carrington, O F; Pyrih, R Z; Rickard, R S

The invention is an improvement in the process for recovering uranyl uranium from solutions in which the uranyl uranium is recovered with an liquid-liquid solvent extraction agent dissolved in an inert solvent, the loaded agent scrubbed with water, the scrubbed agent stripped with ammonium carbonate solution to form a slurry of ammonium uranyl tricarbonate, the stripped agent returned to the liquid-liquid solvent extraction step, and the ammonium uranyl tricarbonate calcined to a uranium oxide product, the improvement which comprises stripping the uranium from the ion exchange agent with an alkali metal carbonate rather than ammonium carbonate, scrubbing the loaded agent with acidified alkali carbonate strip solution prior to stripping, and regenerating the stripped liquid-liquid solvent extraction agent with a mineral acid before return to the liquidliquid solvent extraction circuit.

• Assignee: Earth Sciences Inc.
• Patent Number(s): US 4258014
• OSTI ID: 6311656
• Country of Publication: United States
• Language: English

Related Subjects

050400* -- Nuclear Fuels-- Feed Processing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDE COMPOUNDS
ACTINIDES
ALKALI METAL COMPOUNDS
CALCINATION
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
EXTRACTION
ION EXCHANGE
METALS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PRECIPITATION
PRODUCTION
PYROLYSIS
RECOVERY
SEPARATION PROCESSES
SODIUM CARBONATES
SODIUM COMPOUNDS
SOLVENT EXTRACTION
THERMOCHEMICAL PROCESSES
URANIUM
URANIUM COMPOUNDS
URANIUM OXIDES
URANIUM OXIDES U3O8