Uranium recovery from LiF–CaF2–UF4–GdF3 system on Ni electrode

Author: Straka M.   Szatmáry L.   Mareček M.   Korenko M.  

Publisher: Springer Publishing Company

ISSN: 0236-5731

Source: Journal of Radioanalytical and Nuclear Chemistry, Vol.298, Iss.1, 2013-10, pp. : 393-397

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Abstract

Electrochemistry of gadolinium and uranium in LiF–CaF2 (79–21 mol%) melt was studied using reactive Ni electrode and alloying reactions were observed. Deposits of gadolinium and uranium in the form of Gd–Ni and U–Ni intermetallic alloys were obtained after electrolysis by modulated current. Electrolysis of the same parameters was used also in the complex system of LiF–CaF2–UF4–GdF3 to demonstrate feasibility of selective deposition of uranium and therefore its separation from the system. Compact deposit of U–Ni alloy containing only traces of gadolinium was obtained.