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Electrorefining of U-Pu-Zr alloy on solid Al electrodes in LiCl-KCl eutectic melt initially containing Zr ions

Soucek, Pavel and Cassayre, Laurent and Malmbeck, Rikard and Mendes, Eric and Glatz, Jean-Paul Electrorefining of U-Pu-Zr alloy on solid Al electrodes in LiCl-KCl eutectic melt initially containing Zr ions. (2007) In: European Nuclear Conference, 16-20 Sep 2007, Brussels, Belgium .

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Official URL: http://www.euronuclear.org/events/enc/enc2007/

Abstract

Electrorefining process in molten chloride salts using solid aluminium cathodes to recover actinides (An) is developed in ITU. Complete recovery of actinides in electrorefining of An-Zr alloy fuels can not be achieved without co-dissolution of Zr. It has been shown in previous experiments that the presence of Zr ions resulted in a significant deterioration in quality of the deposit. The present work has been focussed on a better understanding of the electrochemical behaviour of Zr ions in LiCl-KCl melt. In addition, electrorefining of UPuZr alloy in a melt containing dissolved Zr at the beginning of the process has been carried out. At first, Zr4+ content was chemically reduced by addition of UPuZr alloy forming a dispersion of Zr-containing particles in the melt. Electrorefining process in this modified melt yielded compact deposits consisting of UAl3, UAl4, PuAl3 and PuAl4 alloys.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > European Institute for Energy Research - EIFER (GERMANY)
Laboratory name:
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Deposited By: Hélène Dubernard

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