Reactive-crystallization method for purification of LiCl-KCl eutectic salt waste

被引：0

作者：

Lee, Byeonggwan ^{[1
]}

Kim, Ga-Yeong ^{[1
]}

Choi, Jung-Hoon ^{[1
]}

Pyo, Jae-Young ^{[1
]}

Lee, Ki Rak ^{[1
]}

Kang, Hyun Woo ^{[1
]}

Shin, Kyuchul ^{[2
]}

Park, Hwan-Seo ^{[1
]}

机构：

[1] Korea Atom Energy Res Inst, 111 Daedeok Daero 989, Daejeon 34057, South Korea

[2] Kyungpook Natl Univ, Dept Appl Chem, 80 Daehak Ro, Daegu 41566, South Korea

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2024年 / 333卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

Reactive-crystallization; Melt crystallization; Precipitation; LiCl-KCl eutectic salt waste; Pyrochemical process; Molten salt; MELT CRYSTALLIZATION; MOLTEN-SALT; CRYSTAL; IMPURITIES; PRECIPITATION; PARTICLES; NUCLIDES; ELEMENTS; REMOVAL; SR;

D O I：

10.1007/s10967-024-09793-z

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this study, a reactive-crystallization method was introduced for the purification of LiCl-KCl salt waste generated in pyrochemical processes, wherein the salt was purified and impurities were precipitated using Li2CO3. The element separation efficiencies of group I/II and rare-earth elements were found to be > 90%. In addition, the metal corrosion generated during this process was mostly present in the precipitate phase, and the dissolved metal corrosion in the eutectic salt was suppressed to a few ppm. The feasibility of this process was confirmed by thermodynamic calculations. Reactive-crystallization can also be applied to other salt waste systems, such as MSR nuclear fuel treatment and molten salt chemistry for impurity purification.

引用

页码：6331 / 6341

页数：11

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