Title:
METHOD OF TREATING NUCLEAR FUEL
Document Type and Number:
Japanese Patent JPS60187897
Kind Code:
A
Abstract:
In the process for treating irradiated nuclear fuel to effect separation of uranium plutonium other higher actinides, and fission products, in which nitric acid treatment, followed by solvent extraction, then backwashing the reduction of tetra- and hexa-valent plutonium to the tri-valent form, then a second solvent extraction by which the tri-valent plutonium remains in the aqueous phase while uranium goes into the solvent phase, the reduction step is performed by hydrazine with or without tetra-valent uranium nitrate and catalyzed by technetium in the tetra-valent form with or without technetium in one or more higher valency states. The technetium can be present in the system as an irradiation product or be added to the process stream in a combined form.
Inventors:
JIYON GIYARAUEI
PIITAA DEIBUITSUDO UIRUSON
PIITAA DEIBUITSUDO UIRUSON
Application Number:
JP2614885A
Publication Date:
September 25, 1985
Filing Date:
February 13, 1985
Export Citation:
Assignee:
BRITISH NUCLEAR FUELS LTD
International Classes:
C22B60/02; C22B60/04; G21C19/46; (IPC1-7): G21C19/46
Attorney, Agent or Firm:
Minoru Nakamura