Study on preparation and application of NaCl-KCl-CsCl-Cs2ZrCl6 composite electrolyte
Journal of physics(2023)
摘要
Abstract Preparing zirconium chloride composite salts such as Cs 2 ZrCl 6 can replace highly volatile ZrCl 4 for studying molten salt electrolytic refining zirconium. The NaCl-KCl-CsCl-Cs 2 ZrCl 6 composite electrolyte was prepared using ternary molten salt with a molar ratio of NaCl: KCl: CsCl=30: 24.5: 45.5 and ZrCl 4 as raw materials. According to thermodynamic analysis, ZrCl 4 preferentially reacts with CsCl to form Cs 2 ZrCl 6 with strong stability. X-ray diffraction analysis showed that the main phase of the product was Cs 2 ZrCl 6 . ICP-DSC analysis showed that the conversion rate of ZrCl 4 to Cs 2 ZrCl 6 reached 99.68%. To verify the properties of this electrolyte, it is applied to molten salt electrolytic refining sponge zirconium. Studies have shown that this electrolyte system obtains dendrite zirconium products with a maximum grain size of 6.29mm, a system with more application prospects.
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关键词
electrolyte,nacl-kcl-cscl-cs
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