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Removing oxygen from a solvent extractant in an uranium recovery process

Patent ·
OSTI ID:6800134
; ;
An improvement in effecting uranium recovery from phosphoric acid solutions is provided by sparging dissolved oxygen contained in solutions and solvents used in a reductive stripping stage with an effective volume of a nonoxidizing gas before the introduction of the solutions and solvents into the stage. Effective volumes of nonoxidizing gases, selected from the group consisting of argon, carbon dioxide, carbon monoxide, helium, hydrogen, nitrogen, sulfur dioxide, and mixtures thereof, displace oxygen from the solutions and solvents thereby reduce deleterious effects of oxygen such as excessive consumption of elemental or ferrous and accumulation of complex iron phosphates or cruds.
Assignee:
Dept. of Energy
Patent Number(s):
US 4432945
OSTI ID:
6800134
Country of Publication:
United States
Language:
English

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Related Subjects

050400* -- Nuclear Fuels-- Feed Processing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDES
ARGON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
EXTRACTION
FLUIDS
GASES
HELIUM
HYDROGEN
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METALS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOSPHORIC ACID
PURIFICATION
RARE GASES
RECOVERY
REMOVAL
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENTS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
URANIUM