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

Abstract

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.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab., IL (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
12431
Report Number(s):
ANL/NT/CP-98226
TRN: US0102512
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 3rd International Symposium on New Materials, Montreal, Quebec (CA), 07/04/1999--07/08/1999; Other Information: PBD: 14 Jul 1999
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; LITHIUM CHLORIDES; POTASSIUM CHLORIDES; MOLTEN SALTS; CADMIUM; LIQUID METALS; EBR-2 REACTOR; DEMONSTRATION PROGRAMS; ELECTROREFINING; SPENT FUELS; EVAPORATION

Citation Formats

Johnson, T. A., Laug, D. V., Li, S. X., and Sofu, T.. Experimental observations on electrorefining spent nuclear fuel in molten LiCl-KCl/liquid cadmium system.. United States: N. p., 1999. Web.
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.. United States.
Johnson, T. A., Laug, D. V., Li, S. X., and Sofu, T.. Wed . "Experimental observations on electrorefining spent nuclear fuel in molten LiCl-KCl/liquid cadmium system.". United States. doi:. https://www.osti.gov/servlets/purl/12431.
@article{osti_12431,
title = {Experimental observations on electrorefining spent nuclear fuel in molten LiCl-KCl/liquid cadmium system.},
author = {Johnson, T. A. and Laug, D. V. and Li, S. X. and Sofu, T.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jul 14 00:00:00 EDT 1999},
month = {Wed Jul 14 00:00:00 EDT 1999}
}

Conference:
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