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Zirconium behaviour during electrorefining of actinide-zirconium alloy in molten LiCl-KCl on aluminium cathodes

A pyrochemical electrorefining process for the recovery of actinides from metallic nuclear fuel based on actinide-zirconium alloys (An-Zr) in a molten salt is being investigated. In this process actinides are group-selectively recovered on solid aluminium cathodes as An-Al alloys using a LiCl-KCl eu...

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Main Authors: Meier, Ralph (Author) , Souček, P. (Author) , Malmbeck, R. (Author) , Krachler, M. (Author) , Rodrigues, A. (Author) , Claux, B. (Author) , Glatz, J. -P. (Author) , Fanghänel, Thomas (Author)
Format: Article (Journal)
Language:English
Published: 2 February 2016
In: Journal of nuclear materials
Year: 2016, Volume: 472, Pages: 99-104
DOI:10.1016/j.jnucmat.2016.01.033
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jnucmat.2016.01.033
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0022311516300356
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Author Notes:R. Meier, P. Souček, R. Malmbeck, M. Krachler, A. Rodrigues, B. Claux, J. -P. Glatz, and Th. Fanghänel
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Summary:A pyrochemical electrorefining process for the recovery of actinides from metallic nuclear fuel based on actinide-zirconium alloys (An-Zr) in a molten salt is being investigated. In this process actinides are group-selectively recovered on solid aluminium cathodes as An-Al alloys using a LiCl-KCl eutectic melt at a temperature of 450 °C. In the present study the electrochemical behaviour of zirconium during electrorefining was investigated. The maximum amount of actinides that can be oxidised without anodic co-dissolution of zirconium was determined at a selected constant cathodic current density. The experiment consisted of three steps to assess the different stages of the electrorefining process, each of which employing a fresh aluminium cathode. The results indicate that almost a complete dissolution of the actinides without co-dissolution of zirconium is possible under the applied experimental conditions.
Item Description:Gesehen am 06.05.2020
Physical Description:Online Resource
DOI:10.1016/j.jnucmat.2016.01.033

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