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

Nukleonika

Lisienko Dmitry G.¹  Rusakov Mikhail A.²  Maltsev Dmitry S.²  Melchakov Stanislav Yu.²  Volkovich Vladimir A.²  Yamshchikov Leonid F.²  Osipenko Aleksandr G.³ 

[1] Department of Physical and Chemical Methods of Analysis, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia;Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, 19 Mira Str., Ekaterinburg, 620002, Russia, Tel.: [phone], Fax: [phone];JSC “Research Institute of Atomic Reactors”, 10 Dimitrova Str., Dimitrovgrad, Ul’yanovsk Region, 435510, Russia;

关键词: neodymium;    uranium;    gallium;    separation factor;    reductive extraction;    pyrochemical reprocessing;   

DOI  :  10.1515/nuka-2015-0116

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown