용융염 전해정련 계에서 초 우라늄 대용물질로서 cerium dysprosium의 적용 = Research The Application of Cerium and Dysprosium as Surrogate Materials of Transuranium in the Molten Salt Electrorefining

다국어 초록 (Multilingual Abstract)

The rare earth elements, especiaily cerium and dysprosium are very difficult to be separated from actinide elements due to their narrow differences in the Gibbs free energy of formation of chloride. That is, they are codeposited with actinide elements in electrorefining process with molten salt. Using this characteristics, present study discusses the feasibility for use of cerium and dysprosium metals to simulate the electrorefining characteristics of the transuranium. The experimental results show that the electrolytic behaviors of these two rare earth elements are similar with the transuranium in low concentration range of uranium chloride in molten salt. However, in high concentration range of uranium chloride they behave as the rare earth elements.