Experimental observations on electrorefining spent nuclear fuel in molten LiCl-KCl/liquid cadmium system.

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Argonne National Laboratory (ANL) is currently performing a demonstration program for the Department of Energy (DOE) which processes spent nuclear fuel from the Experimental Breeder Reactor (EBR-II). One of the key steps in this demonstration program is electrorefining of the spent fuel in a molten LiCl-KCl/liquid cadmium system using a pilot scale electrorefiner (Mk-IV ER). This article summarizes experimental observations and engineering aspects for electrorefining spent fuel in the molten LiCl-KCl/liquid cadmium system. It was found that the liquid cadmium pool acted as an intermediate electrode during the electrorefining process in the ER. The cadmium level was gradually decreased due ... continued below

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36 p.

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Johnson, T. A.; Laug, D. V.; Li, S. X. & Sofu, T. July 14, 1999.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 37 times . More information about this article can be viewed below.

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Description

Argonne National Laboratory (ANL) is currently performing a demonstration program for the Department of Energy (DOE) which processes spent nuclear fuel from the Experimental Breeder Reactor (EBR-II). One of the key steps in this demonstration program is electrorefining of the spent fuel in a molten LiCl-KCl/liquid cadmium system using a pilot scale electrorefiner (Mk-IV ER). This article summarizes experimental observations and engineering aspects for electrorefining spent fuel in the molten LiCl-KCl/liquid cadmium system. It was found that the liquid cadmium pool acted as an intermediate electrode during the electrorefining process in the ER. The cadmium level was gradually decreased due to its high vapor pressure and vaporization rate at the ER operational temperature. The low cadmium level caused the anode assembly momentarily to touch the ER vessel hardware, which generated a periodic current change at the salt/cathode interface and improved uranium recovery efficiency for the process. The primary current distributions calculated by numerical simulations were used in interpreting the experimental results.

Physical Description

36 p.

Notes

INIS; OSTI as DE00012431

Medium: P; Size: 36 pages

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  • 3rd International Symposium on New Materials, Montreal, Quebec (CA), 07/04/1999--07/08/1999

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  • Report No.: ANL/NT/CP-98226
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 12431
  • Archival Resource Key: ark:/67531/metadc622283

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  • July 14, 1999

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  • June 16, 2015, 7:43 a.m.

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  • April 12, 2017, 2:11 p.m.

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Johnson, T. A.; Laug, D. V.; Li, S. X. & Sofu, T. Experimental observations on electrorefining spent nuclear fuel in molten LiCl-KCl/liquid cadmium system., article, July 14, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc622283/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.