Reductive stripping process for the recovery of uranium from wet-process phosphoric acid

Patent · Sun Jan 01 00:00:00 EST 1984

OSTI ID:875287

Hurst, Fred J ^[1]; Crouse, David J ^[1]

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1. Oak Ridge, TN

A reductive stripping flow sheet for recovery of uranium from wet-process phosphoric acid is described. Uranium is stripped from a uranium-loaded organic phase by a redox reaction converting the uranyl to uranous ion. The uranous ion is reoxidized to the uranyl oxidation state to form an aqueous feed solution highly concentrated in uranium. Processing of this feed through a second solvent extraction cycle requires far less stripping reagent as compared to a flow sheet which does not include the reductive stripping reaction.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• Assignee: DOE
• Patent Number(s): US RE31686
• OSTI ID: 875287
• Country of Publication: United States
• Language: English

Related Subjects

reductive
stripping
process
recovery
uranium
wet-process
phosphoric
acid
flow
sheet
described
stripped
uranium-loaded
organic
phase
redox
reaction
converting
uranyl
uranous
reoxidized
oxidation
form
aqueous
feed
solution
highly
concentrated
processing
solvent
extraction
cycle
requires
reagent
compared
phosphoric acid
highly concentrated
stripping process
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