无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2022, Vol. 54 ›› Issue (6): 1-5.doi: 10.19964/j.issn.1006-4990.2021-0484

• 综述与专论 •    下一篇

氯化熔盐体系黏度特性研究现状

陈凤(),问悦凯,郭宇峰(),郑富强,王帅,杨凌志,郑宇,李冬月,任雨荞   

  1. 中南大学资源加工与生物工程学院,湖南 长沙 410083
  • 收稿日期:2021-08-11 出版日期:2022-06-10 发布日期:2022-06-22
  • 作者简介:陈凤(1987— ),女,博士,副教授,研究方向为高钙镁复杂钛资源高效利用、复杂矿石及二次资源清洁高效提取与利用;E-mail:csuchenf@csu.edu.cn
  • 基金资助:
    钒钛资源综合利用国家重点实验室开放基金课题;国家自然科学基金青年科学基金(51904348);湖南省自然科学基金面上项目(2021JJ30821);湖南省自然科学基金青年基金项目(2019JJ50816)

Research status of viscosity characteristics of chlorinated molten salt system

CHEN Feng(),WEN Yuekai,GUO Yufeng(),ZHENG Fuqiang,WANG Shuai,YANG Lingzhi,ZHENG Yu,LI Dongyue,REN Yuqiao   

  1. School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China
  • Received:2021-08-11 Published:2022-06-10 Online:2022-06-22

摘要:

中国钛原料钙镁含量高,主要采用熔盐氯化法处理,会产生大量废盐难以处理。研究氯化熔盐体系的黏度特性对于开发该工艺产生的大量废盐利用新方法具有重要意义。综述了国内外对氯化熔盐体系黏度影响规律的研究:从氯化熔盐体系的熔盐离子出发,探讨了Ca2+、Mg2+、Na+及K+等对氯化熔盐黏度的影响;从反应条件出发,探讨了温度、气氛和添加剂对氯化熔盐黏度的影响。结合当前对氯化熔盐体系黏度的研究,针对NaCl-KCl-CaCl2-MgCl2四元氯化熔盐体系,在不同温度条件下改变气氛或者添加剂,对体系黏度的变化规律进行了考察。通过改变氯化熔盐体系的黏度,寻求适合高温相转化渣高效分离的手段和方法,对高温相转化法高效循环处理熔盐氯化废渣具有重要意义,并能有效推动中国熔盐氯化法的发展。

关键词: 氯化熔盐, 熔盐黏度, 熔盐组成

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

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