Experimental observations on the role of the cadmium pool in Mark-IV ER

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Argonne National Laboratory (ANL) has developed and demonstrated an electrometallurgical process for the Department of Energy (DOE) to treat sodium bonded spent nuclear fuel. One of the key steps in the demonstration was electrorefining the spent fuel in a molten LiCl-KCl-UCl{sub 3}/liquid cadmium system using a pilot scale electrorefiner (Mark-IV ER). This article summarizes experimental observations and engineering aspects for the roles of the liquid cadmium during electrorefining spent fuel in the Mark-IV ER. It was found that the liquid cadmium pool acted as an intermediate electrode during the electrorefining process. The cadmium level was gradually decreased due to its ... continued below

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13 p.

Creation Information

Li, S. X.; Vaden, D.; Mariani, R. D. & Johnson, T. A. March 20, 2000.

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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. More information about this article can be viewed below.

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  • Argonne National Laboratory
    Publisher Info: Argonne National Laboratory, Argonne, IL (United States)
    Place of Publication: Argonne, Illinois

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Description

Argonne National Laboratory (ANL) has developed and demonstrated an electrometallurgical process for the Department of Energy (DOE) to treat sodium bonded spent nuclear fuel. One of the key steps in the demonstration was electrorefining the spent fuel in a molten LiCl-KCl-UCl{sub 3}/liquid cadmium system using a pilot scale electrorefiner (Mark-IV ER). This article summarizes experimental observations and engineering aspects for the roles of the liquid cadmium during electrorefining spent fuel in the Mark-IV ER. It was found that the liquid cadmium pool acted as an intermediate electrode during the electrorefining process. 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 to electrically short with the ER vessel hardware, which resulted in the difficulties to determine the endpoint of uranium dissolution from the anode baskets and reducing the current efficiency. A reflux cadmium vapor trap was installed and has successfully prevented the cadmium level from decreasing.

Physical Description

13 p.

Notes

INIS; OSTI as DE00752904

Medium: P; Size: 13 pages

Source

  • ANS 4th Topical Meeting - DOE Spent Nuclear Fuel and Fissile Material Management, San Diego, CA (US), 06/04/2000--06/08/2000

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  • Report No.: ANL/NT/CP-101394
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 752904
  • Archival Resource Key: ark:/67531/metadc702805

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  • March 20, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • April 7, 2017, 1:07 p.m.

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Li, S. X.; Vaden, D.; Mariani, R. D. & Johnson, T. A. Experimental observations on the role of the cadmium pool in Mark-IV ER, article, March 20, 2000; Argonne, Illinois. (digital.library.unt.edu/ark:/67531/metadc702805/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.