Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Maintaining reductive strip efficiency in uranium recovery processes

Patent ·
OSTI ID:5750591
; ; ;
Wet process phosphoric acid is oxidized with nitric acid so that uranium values therein are in the +6 state. The organic extractant which contacts the acid extracts the +6 uranium and nitrate and/or nitrite ions. Urea is added to the oxidized acid to react with the nitrate and/or nitrite ions so that the organic does not extract them. The organic is reductively stripped with an aqueous solution containing ferrous ions. The efficacy of the ferrous ions is not lost through reaction with nitrate and/or nitrite ions.
Assignee:
Westinghouse Electric Corp
Patent Number(s):
US 4311675
OSTI ID:
5750591
Country of Publication:
United States
Language:
English

Similar Records

Reduction of iron precipitation in uranium extraction process
Patent · Mon Apr 05 23:00:00 EST 1982 · OSTI ID:5210312
Reductive stripping of uranium values from wet-process phosphoric acid
Patent · Tue Oct 04 00:00:00 EDT 1983 · OSTI ID:5381422
Reduction of iron in a reductive stripping process for the recovery of uranium from wet process phosphoric acid
Patent · Tue Jul 24 00:00:00 EDT 1984 · OSTI ID:6410918

Related Subjects

050400* -- Nuclear Fuels-- Feed Processing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDES
AMIDES
CARBONIC ACID DERIVATIVES
CHEMICAL REACTIONS
ELEMENTS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
IRON COMPOUNDS
METALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORIC ACID
PHOSPHORUS COMPOUNDS
RECOVERY
REDOX REACTIONS
TRANSITION ELEMENT COMPOUNDS
URANIUM
UREA