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投稿时间:2019-08-02 修订日期:2019-08-06
投稿时间:2019-08-02 修订日期:2019-08-06
中文摘要: 利用钙热还原反应冶炼钛、锆、铈等稀有金属时,熔盐黏度增大往往导致搅拌困难、耗能增大、甚至反应减缓等问题。为探明影响CaCl2熔盐黏度的因素,采用旋转柱体法测定了在1 073~1 373 K不同成分熔盐黏度随温度变化的情况,根据试验结果绘制了CaCl2、CaCl2-CaF2、CaCl2-CaO和CaCl2-CaF2-CaO四种熔盐体系的黏度—温度曲线。结果表明,在测试温度范围内,熔盐黏度大多在2.0~10.0 mPa?s,四种熔盐体系的黏度都随温度的降低而增大;同样温度条件下加入CaF2后使熔盐黏度减小,加入CaO使熔盐黏度增大。
Abstract:When titanium, zirconium, cerium and other rare metals were directly extracted by calciothermic reactions, rise of molten salt viscosity often led to difficulties in stirring, energy consumption and slow reaction. In order to find out the factors affecting viscosity of CaCl2 molten salt, viscosity of different compositions of molten salt in temperature range from 1 073 K to 1 373 K was measured. According to experimental results, viscosity-temperature curves of four molten salt systems of CaCl2, CaCl2-CaF2, CaCl2-CaO, and CaCl2-CaF2-CaO were drawn. The results show that viscosity value is mostly 2.0~10.0 mPa?s within test temperature range, viscosity of four molten salt systems rises with decreasing of temperature. Viscosity of molten salt drops with addition of CaF2 and rises with addition of CaO.
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基金项目:国家自然科学基金资助项目(51874360)
作者 | 单位 | |
高金强 | 中南大学 冶金与环境学院 | gaojinqiang@csu.edu.cn |
康 乐 | 中核四0四有限公司 | |
王 飞 | 中核四0四有限公司 | |
陈文汨* | 中南大学 冶金与环境学院 | chenwenmi@sina.com |
Author Name | Affiliation | |
GAO Jinqiang | School of metallurgy and environment,Central South University | gaojinqiang@csu.edu.cn |
KANG Le | ||
WANG Fei | ||
CHEN Wenmi | chenwenmi@sina.com |
引用文本:
高金强,康 乐,王 飞,陈文汨.CaCl2-CaF2-CaO熔盐体系的粘度研究[J].有色金属(冶炼部分),2019(12):55-59.
GAO Jinqiang,KANG Le,WANG Fei,CHEN Wenmi.Viscosity Properties of CaCl2-CaF2-CaO Molten Salt[J].Nonferrous Metals (Extractive Metallurgy),2019(12):55-59.
高金强,康 乐,王 飞,陈文汨.CaCl2-CaF2-CaO熔盐体系的粘度研究[J].有色金属(冶炼部分),2019(12):55-59.
GAO Jinqiang,KANG Le,WANG Fei,CHEN Wenmi.Viscosity Properties of CaCl2-CaF2-CaO Molten Salt[J].Nonferrous Metals (Extractive Metallurgy),2019(12):55-59.