Uranium and neodymium partitioning in alkali chloride melts using low-melting gallium-based alloys

Partitioning of uranium and neodymium was studied in a ‘molten chloride salt - liquid Ga-X (X = In or Sn) alloy’ system. Chloride melts were based on the low-melting ternary LiCl-KCl-CsCl eutectic. Nd/U separation factors were calculated from the thermodynamic data as well as determined experimental...

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Bibliographic Details
Published in:Nukleonika 2015-12, Vol.60 (4), p.915-920
Main Authors: Melchakov, Stanislav Yu, Maltsev, Dmitry S., Volkovich, Vladimir A., Yamshchikov, Leonid F., Lisienko, Dmitry G., Osipenko, Aleksandr G., Rusakov, Mikhail A.
Format: Article
Language:English
Subjects:
gallium
neodymium
pyrochemical reprocessing
reductive extraction
separation factor
uranium
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Summary:Partitioning of uranium and neodymium was studied in a ‘molten chloride salt - liquid Ga-X (X = In or Sn) alloy’ system. Chloride melts were based on the low-melting ternary LiCl-KCl-CsCl eutectic. Nd/U separation factors were calculated from the thermodynamic data as well as determined experimentally. Separation of uranium and neodymium was studied using reductive extraction with neodymium acting as a reducing agent. Efficient partitioning of lanthanides (Nd) and actinides (U), simulating fission products and fissile materials in irradiated nuclear fuels, was achieved in a single stage process. The experimentally observed Nd/U separation factor valued up to 106, depending on the conditions.
ISSN:0029-5922
0029-5922
1508-5791
DOI:10.1515/nuka-2015-0116