Design of Electrodes in Geometrical Control Type Electrolyzer for Oxide Electrowinning Process

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岡村 信生 ; 小泉 健治 ; 鷲谷 忠博 ; 青瀬 晋一

Okamura, Nobuo; Koizumi, Kenji; Washiya, Tadahiro; Aose, Shinichi

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In Japan Nuclear Cycle Development Institute (JNC), a commercial scale electrolyzer, whose capacity is 25tHM/y, is been developing to be used in an oxide electrowinning process, a kind of non-aqueous reprocessing process. It has some significant subjects that must be solved before introduced in a commercial reprocessing plant. It developed in JNC has some innovative characteristics, such as cold crucible induction melting (CCIM), to cope with those subjects. But these characteristics make it difficult to arrange the internal components because of a narrow and deep shape of a crucible. So two kinds of analysis systems with computer were constructed to help a design of the internal constitution. One of them is to evaluate the temperature distribution in the crucible and another is to evaluate the shape of deposits. In this study, the internal constitution in the commercial scale electrolyzer was designed by using them finally.