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

Melchakov Stanislav Yu.; Maltsev Dmitry S.; Volkovich Vladimir A.; Yamshchikov Leonid F.; Lisienko Dmitry G.; Osipenko Aleksandr G.; Rusakov Mikhail A.

doi:10.1515/nuka-2015-0116

Nukleonika (Dec 2015)

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

Melchakov Stanislav Yu.,
Maltsev Dmitry S.,
Volkovich Vladimir A.,
Yamshchikov Leonid F.,
Lisienko Dmitry G.,
Osipenko Aleksandr G.,
Rusakov Mikhail A.

Affiliations

Melchakov Stanislav Yu.: Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: +7 343 375 4741, +7 912 689 3893, Fax: +7 343 375 4154
Maltsev Dmitry S.: Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: +7 343 375 4741, +7 912 689 3893, Fax: +7 343 375 4154
Volkovich Vladimir A.: Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: +7 343 375 4741, +7 912 689 3893, Fax: +7 343 375 4154
Yamshchikov Leonid F.: Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: +7 343 375 4741, +7 912 689 3893, Fax: +7 343 375 4154
Lisienko Dmitry G.: Department of Physical and Chemical Methods of Analysis, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia
Osipenko Aleksandr G.: JSC “Research Institute of Atomic Reactors”, 10 Dimitrova Str., Dimitrovgrad, Ul’yanovsk Region, 435510, Russia
Rusakov Mikhail A.: Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: +7 343 375 4741, +7 912 689 3893, Fax: +7 343 375 4154

DOI: https://doi.org/10.1515/nuka-2015-0116
Journal volume & issue: Vol. 60, no. 4
pp. 915 – 920

Abstract

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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.

Published in Nukleonika

ISSN: 0029-5922 (Print); 1508-5791 (Online)
Publisher: Sciendo
Country of publisher: Poland
LCC subjects: Science
Website: https://sciendo.com/journal/NUKA

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