Thermodynamics of reductive extraction of actinides and lanthanides from molten chloride salt into liquid metal

For the development of a pyrochemical group-partitioning process of actinides and lanthanides, the equilibrium distributions of these elements were measured in some typical binary phase systems of molten salt and liquid metal. A LiCl-KCl mixture was selected as the salt phase, and Zn and Bi were exa...

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Published inJournal of alloys and compounds Vol. 271; pp. 587 - 591
Main Authors Moriyama, H., Yamana, H., Nishikawa, S., Shibata, S., Wakayama, N., Miyashita, Y., Moritani, K., Mitsugashira, T.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 12.06.1998
Subjects
Actinides
Lanthanides
Liquid metal
Molten salt
Reductive extraction
Thermodynamic properties
Liquid metal
Actinides
Reductive extraction
Thermodynamic properties
Lanthanides
Molten salt
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Summary:For the development of a pyrochemical group-partitioning process of actinides and lanthanides, the equilibrium distributions of these elements were measured in some typical binary phase systems of molten salt and liquid metal. A LiCl-KCl mixture was selected as the salt phase, and Zn and Bi were examined as the metal phase. Generally speaking, actinides were more reducible and extractable from the salt phase into the metal phase than lanthanides, and the group partitioning of these elements was feasible in these systems. However, the separation factors which were the ratios in the distribution coefficient between actinides and lanthanides were found to be different in different systems due to different alloying energies. The thermodynamic quantities of actinides and lanthanides were evaluated from the equilibrium distributions and discussed in some detail.
ISSN:0925-8388
1873-4669
DOI:10.1016/S0925-8388(98)00165-0