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The distillation behavior of fluorides in LiCl–KCl molten salt

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Abstract

The distillation behaviors of some fission product fluorides in LiCl–KCl system were investigated. For rare earth element, the corresponding decontamination factors (DFs) of Ce in 5 wt% CeF3–LiCl–KCl salts were over 100 at 1040 K and 13 Pa. For SrF2, the very poor DFs was deduced for the presence of more volatile SrClF, while Zr4+ was observed to complex easily with F− and Cl−, which affected its evaporation rate and the separation efficiency. F ion concentration in condensate salt was 1–2 level higher than the metal ion due to the stronger covalent band.

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Acknowledgements

This work was financially supported by National Natural Science Foundation of China (Grant No. 21771188), the Strategic Priority Program and Frontier Science Key Program (Grant Nos. XDA02030000 and QYZDY-SSWJSC016) of the Chinese Academy of Sciences.

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Authors and Affiliations

  1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

    Yan Luo, Tianhong Yang, Junxia Geng, Haiying Fu & Qiang Dou

  2. Center of Excellence TMSR Energy System, Chinese Academy of Sciences, Shanghai, 201800, China

    Yan Luo, Tianhong Yang, Junxia Geng, Haiying Fu & Qiang Dou

  3. University of Chinese Academy of Sciences, Beijing, 100049, China

    Yan Luo, Tianhong Yang & Junxia Geng

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  1. Yan Luo
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  2. Tianhong Yang
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  3. Junxia Geng
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  4. Haiying Fu
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  5. Qiang Dou
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Correspondence to Haiying Fu or Qiang Dou.

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Luo, Y., Yang, T., Geng, J. et al. The distillation behavior of fluorides in LiCl–KCl molten salt. J Radioanal Nucl Chem 324, 1365–1371 (2020). https://doi.org/10.1007/s10967-020-07153-1

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