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

Patent ·
OSTI ID:875287
 [1];  [1]
  1. Oak Ridge, TN
+ Show Author Affiliations

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
DOE Contract Number:
W-7405-ENG-26
Assignee:
DOE
Patent Number(s):
US RE31686
OSTI ID:
875287
Country of Publication:
United States
Language:
English

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Related Subjects

/423/
acid
aqueous
compared
concentrated
converting
cycle
described
extraction
feed
flow
form
highly
highly concentrated
organic
oxidation
phase
phosphoric
phosphoric acid
process
processing
reaction
reagent
recovery
redox
reductive
reoxidized
requires
sheet
solution
solvent
stripped
stripping
stripping process
uranium
uranium-loaded
uranous
uranyl
wet-process