Title:
【発明の名称】連続的ウラン回収法
Document Type and Number:
Japanese Patent JPS5924732
Kind Code:
B2
Abstract:
The invention concerns a process for the recovery of the uranium contained in an impure phosphoric acid. The impure acid is treated with an organic phase capable of extracting U (VI), and the resultant organic phase is then re-extracted with an aqueous solution containing complexing acid and an oxidizing-reducing agent in the reduced state, said oxidizing-reducing agent being capable of reducing U+6 to U+4 in said aqueous solution. The resultant aqueous phase is then subjected to electrochemical oxidation, followed by extraction with a second organic phase from which the uranium is recovered, the depleted aqueous solution being recycled to the re-extraction after electrochemical reduction, with the process comprising two organic phase cycles and a cycle of a complexing aqueous solution. The process is of particular interest when applied to the recovery and concentration of uranium contained in a wet process phosphoric acid.
Inventors:
JANNMARUKU PAUTORO
Application Number:
JP2331080A
Publication Date:
June 12, 1984
Filing Date:
February 26, 1980
Export Citation:
Assignee:
RHONE POULENC IND
International Classes:
C01G43/00; C01B25/238; C22B60/02; C25B1/00; (IPC1-7): C01G43/00
Attorney, Agent or Firm:
Asamura Akira