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

• Authors: Stanislav Yu. Melchakov , Dmitry S. Maltsev , Vladimir A. Volkovich , Leonid F. Yamshchikov , Dmitry G. Lisienko , Aleksandr G. Osipenko , Mikhail A. Rusakov
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

neodymium; uranium; gallium; separation factor; reductive extraction; pyrochemical reprocessing

• Publisher: De Gruyter Open
• Journal: Nukleonika
• Year: 2015
• Volume: 60
• Issue: 4
• Pages: 915-920

Dates

published

1 - 12 - 2015

received

18 - 6 - 2015

accepted

25 - 8 - 2015

online

30 - 12 - 2015

Contributors

author

Stanislav Yu. Melchakov

• Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: [phone], Fax: [phone]

author

Dmitry S. Maltsev

• Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: [phone], Fax: [phone]

author

Vladimir A. Volkovich

• Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: [phone], Fax: [phone]

author

Leonid F. Yamshchikov

• Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: [phone], Fax: [phone]

author

Dmitry G. Lisienko

• Department of Physical and Chemical Methods of Analysis, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia

author

Aleksandr G. Osipenko

• JSC “Research Institute of Atomic Reactors”, 10 Dimitrova Str., Dimitrovgrad, Ul’yanovsk Region, 435510, Russia

author

Mikhail A. Rusakov

• Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: [phone], Fax: [phone]

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Identifiers

DOI

10.1515/nuka-2015-0116