Development of pyro-metallurgical reprocessing; Electrochmical reduction of MOX pellets & Sequential test for electro-refining using reduced MOX pellets

Kurata, Masaki* ; Yahagi, Noboru*; Kitawaki, Shinichi ; Nakayoshi, Akira  ; Fukushima, Mineo 

CRIEPI and JAEA are continuing a collaboration study for metal pyro-processing, in which sequential process tests have been performed under practical conditions. Recent results on two kinds of sequential process test are reported. The former is the electro-chemical reduction test of MOX pellet. The latter is the electrolysis test using a combination of U-Pu alloy anode and solid or liquid cadmium cathode. Variation in electrode potentials, current efficiency, molten salt composition, Pu- or Am-impurity in the U-product, and etc. were measured.