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Separation Characteristics of NdCl3 from LiCl-KCl Eutectic Salt in a Reactive Distillation Process using Li2CO3 or K2CO3

탄산화물(Li2CO3, K2CO3)을 이용한 반응증류공정에서 LiCl-KCl 공융염 내 NdCl3의 분리특성

Eun, Hee-Chul;Choi, Jung-Hoon;Lee, Tae-Kyo;Cho, In-Hak;Kim, Na-Young;Yu, Jae-Uk;Park, Hwan-Seo;Ahn, Do-Hee
은희철;최정훈;이태교;조인학;김나영;유재욱;박환서;안도희

  • Received : 2015.06.16
  • Accepted : 2015.07.20
  • Published : 2015.09.30

Abstract

It is necessary to develop an effective waste salt treatment technology for the minimization of radioactive waste generation from the pyroprocessing of spent nuclear fuel. For this reason, the separation characteristics of NdCl3 from LiCl-KCl eutectic salt in a reactive distillation process using Li2CO3 or K2CO3 were observed. NdCl3 was converted into oxychloride (NdOCl) or oxide (Nd2O3) in the reaction model between NdCl3 and the carbonates using HSC-Chemistry, and this result was confirmed in the reactive distillation test of the LiCl-KCl-NdCl3 system using the carbonates. Based on these results, the reactive distillation process conditions were determined to separate NdCl3 into an oxide form (Nd2O3) which can be easily fabricated into a final waste form.

Keywords

Pyroprocessing;Spent nuclear fuel;LiCl-KCl eutectic salt;Reactive distillation;NdCl3

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Cited by

  1. Dechlorination/Solidification of LiCl Waste by Using a Synthetic Inorganic Composite with Different Compositions vol.14, pp.3, 2016, https://doi.org/10.7733/jnfcwt.2016.14.3.211
  2. A Basic Study on Separation of U and Nd From LiCl-KCl-UCl3-NdCl3 System vol.16, pp.1, 2018, https://doi.org/10.7733/jnfcwt.2018.16.1.59

Acknowledgement

Grant : 파이로공정 원격시스템 기술개발