Title:
ELECTROLYTIC TANK AND ELECTROLYTIC METHOD FOR HIGH-EFFICIENCY DRY REPROCESSING
Document Type and Number:
WIPO Patent Application WO/2017/061267
Kind Code:
A1
Abstract:
The present invention solves causes that reduce the efficiency in anodic electrolysis of a high-temperature molten salt during dry reprocessing of a spent metal fuel containing U and/or Pu. A molten salt electrolysis tank, in which electrolytic refining is performed by melting a spent metal fuel rod through anodic electrolysis in a crucible filled with a molten salt so as to cause U and/or Pu to be reduced and precipitated once again on the surface of a cathode, comprises: an anode feeder which is equipped with a mechanism for recovering deteriorated contact resistance that takes place between the metal fuel rod and the anode in the course of the anodic electrolysis; a cathode feeder which is controlled so as to have a potential in a range that causes U and/or Pu ions to be reduced to metal; a heating mechanism for locally heating the metal fuel rod and/or an excitation mechanism for bringing the metal fuel rod into a locally excited state; and a solenoid coil or a permanent magnet that is disposed between the anode feeder and the cathode feeder so as to improve separation efficiency of U and/or Pu ions by applying a combination of an electric field and a magnetic field. This molten salt electrolysis tank is used to carry out the anodic electrolysis.
Inventors:
SUMITA OSAO (JP)
UENO ISAO (JP)
YOKOMINE TAKEHIKO (JP)
UENO ISAO (JP)
YOKOMINE TAKEHIKO (JP)
Application Number:
PCT/JP2016/077666
Publication Date:
April 13, 2017
Filing Date:
September 20, 2016
Export Citation:
Assignee:
CLEAR INC (JP)
International Classes:
G21C19/44; C25C3/34; C25C7/00; C25C7/02; C25C7/06
Foreign References:
| JPH1164576A | 1999-03-05 | |||
| JP2013170290A | 2013-09-02 | |||
| JPH06324189A | 1994-11-25 | |||
| JP2008266662A | 2008-11-06 | |||
| US6689260B1 | 2004-02-10 | |||
| JP2000056075A | 2000-02-25 |
Other References:
HOWARD R.REISS: "Final Report :Accelerated beta decay for disposal of fission fragment wastes", 6 March 2000 (2000-03-06), pages 1 - 24, XP055374426, Retrieved from the Internet [retrieved on 20161129]
A .V.SIMAKIN ET AL.: "Accelerated alpha- decay of 232 U isotope achieved by exposure of its aqueous solution with gold nanoparticles to laser radiation", PHYSICS OF WAVE PHENOMENA, vol. 21, no. 1, January 2013 (2013-01-01), pages 31 - 37, XP055374434, Retrieved from the Internet [retrieved on 20161129]
A .V.SIMAKIN ET AL.: "Accelerated alpha- decay of 232 U isotope achieved by exposure of its aqueous solution with gold nanoparticles to laser radiation", PHYSICS OF WAVE PHENOMENA, vol. 21, no. 1, January 2013 (2013-01-01), pages 31 - 37, XP055374434, Retrieved from the Internet
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, P.C. (JP)
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