Removal of rare earth elements from a U/RE ingot via a reaction with UCl3
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A chemical equilibrium experiment was conducted to remove rare earth (RE) elements from a U/RE ingot using UCl3 as an oxidant. Upon analysis, the RE and uranium in the prepared U/RE ingot formed discrete matrixes and were not well mixed. The reaction with UCl3 resulted in the complete removal of the RE matrix from the U/RE specimen, and an increased concentration of RE chloride and a drastically reduced concentration of UCl3 in the LiCl–KCl molten salt. The results of this study will be used to improve the process for transuranic waste treatment in pyroprocessing.
KeywordsU/RE ingot UCl3 Rare earth removal Pyroprocessing
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean Ministry of Science, ICT (MIST) (grant number 2017M2A8A5015079).
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