氯化熔盐体系黏度特性研究现状

doi:10.19964/j.issn.1006-4990.2021-0484

Abstract

Abstract:

The content of calcium and magnesium in titanium raw materials is high in China.The molten salt chlorination process is mainly used and produced a large amount of waste salt，which is difficult to treat.The study on the viscosity characteristics of chlorinated molten salt system is of great significance for the development of new methods for the utilization of a large amount of waste salt produced by this process.The research on the effect law of viscosity of chlorinated molten salt system at home and abroad was reviewed.Starting from the molten salt ions of chlorinated molten salt system，the effect of Ca²⁺，Mg²⁺，Na⁺ and K⁺ on the viscosity of chlorinated molten salt was discussed.Based on the reaction conditions，the effect of temperature，atmosphere and additives on the viscosity of chlorinated molten salt was discussed.Combined with the current research on the viscosity of chlorinated molten salt system，the variation law of the viscosity of NaCl-KCl-CaCl₂-MgCl₂ quaternary chlorinated molten salt system was investigated by changing the atmosphere or additives at different temperature.By changing the viscosity of chlorinated molten salt system and seeking the means and methods suitable for efficient separation of high-temperature phase conversion slag，it is of great significance for the efficient and cyclic treatment of molten salt chlorination waste residue by high temperature phase conversion method，which can effectively promote the development of molten salt chlorination in China.

Key words: chlorinated molten salt, molten salt viscosity, molten salt composition

CLC Number:

CHEN Feng,WEN Yuekai,GUO Yufeng,ZHENG Fuqiang,WANG Shuai,YANG Lingzhi,ZHENG Yu,LI Dongyue,REN Yuqiao. Research status of viscosity characteristics of chlorinated molten salt system[J]. Inorganic Chemicals Industry, 2022, 54(6): 1-5.

Figures/Tables 1

References 25

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氯化熔盐体系	黏度/mPa·s
NaCl-CaCl₂	η=60.459 86-0.190 20T+0.000 158T²
NaCl-KCl-CaCl₂	η=67.972 21-0.209 79T+0.000 176T²
NaCl-CaCl₂-MgCl₂	η=47.394 81-0.153 09T+0.000 133T²
NaCl-KCl-MgCl₂	η=24.650 93-0.079 61T+0.000 069T²
KCl-CaCl₂-MgCl₂	η=33.713 82-0.109 75T+0.000 093T²
NaCl-KCl-CaCl₂-MgCl₂	η=31.866 77-0.102 61T+0.000 090T²

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National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Research status of viscosity characteristics of chlorinated molten salt system

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