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Behavior of U-Zr alloy anode and U-dendrite cathode during sequential electrolysis in LiCl-KCl-(U, Pu, Am)Cl$$_{3}$$ molten salt

LiCl-KCl-(U, Pu,Am)Cl$$_{3}$$溶融塩を用いたシーケンシャル電解におけるU-Zr合金陽極とUデンドライト陰極の挙動

倉田 正輝* ; 村上 毅*; 北脇 慎一 ; 仲吉 彬 ; 福嶋 峰夫 

Kurata, Masaki*; Murakami, Tsuyoshi*; Kitawaki, Shinichi; Nakayoshi, Akira; Fukushima, Mineo

電力中央研究所とJAEAは共同で乾式再処理技術開発を継続している。これまでに1.2kg程度の溶融塩を用いてU, Pu, Amの電解試験を実施してきた。今回、U-Zr合金を陽極としてCd陰極及び固体陰極を用いて実施した電解試験において得られた電流効率や陰極析出物組成,陽極及び溶融塩の物質収支データについて報告する。

CRIEPI and JAEA have continued a collaboration study for pyro-reprocessing. Various kinds of sequential electrolysis are performed in an 1.2 kg of molten salt bath that includes U, Pu and Am. Recent results are reported, in which several batches of U-Zr alloy anode and liquid-Cd or solid-Fe cathode were continuously used. Variation in current efficiency, compositions of cathode product, anode residue and molten salt, variation in mass balance, etc. were measured successively based on two kinds of the electrolysis procedure.

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