Sequential process for extraction and recovery of vanadium and uranium from wet process acids

Patent · Tue Jan 24 04:00:00 EST 1984

OSTI ID:6861125

Bowerman, P D; Lucid, M F

A process for preferentially extracting and recovering vanadium and uranium from wet process acids is claimed. The wet process acid first is contacted with a neutral organophosphorus compound to extract the vanadium values. The resulting loaded organic phase is separated from the wet process acid due to immiscibility of the acid and organic phases. The vanadium values then are separated from the organic phase by stripping. The raffinate separated from the first organic extractant then is contacted with a second organic extractant comprising a dialkyl-phosphoric acid and a neutral organo-phosphorus compound to extract the uranium values. The resulting loaded organic phase is separated from the wet process acid due to immiscibility of the acid and organic phases. The organic phase is stripped with a reductive stripping solution and the stripping solution then is oxidized to convert the uranium values to the hexavalent oxidation state. The oxidized solution then is contacted with another organic extractant to reextract the uranium to thereby concentrate the uranium product which then is stripped from the organic product with ammonium carbonate to form ammonium uranyl carbonate.

• Assignee: Kerr-McGee Chemical Corp.
• Patent Number(s): US 4427640
• OSTI ID: 6861125
• Country of Publication: United States
• Language: English

Related Subjects

050400* -- Nuclear Fuels-- Feed Processing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDE COMPOUNDS
ACTINIDES
AMMONIUM CARBONATES
AMMONIUM COMPOUNDS
AQUEOUS SOLUTIONS
AUC
CARBON COMPOUNDS
CARBONATES
CHEMICAL REACTIONS
CONTROL
DISPERSIONS
ELEMENTS
EXTRACTION
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METALS
MIXTURES
OXIDATION
OXYGEN COMPOUNDS
PHOSPHORIC ACID
PHOSPHORUS COMPOUNDS
PROCESS CONTROL
PROCESS SOLUTIONS
RECOVERY
REDUCING AGENTS
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
TRANSITION ELEMENTS
URANIUM
URANIUM COMPOUNDS
URANYL COMPOUNDS
VANADIUM