Sc_(2)O_(3)在ScF_(3)-LiF熔盐中的溶解特性  

Dissolution Characteristics of Sc_(2)O_(3) in ScF_(3)-LiF Molten Salt

作　　者：赵航 陈建设 王春新 李斌川 韩庆 刘奎仁 ZHAO Hang;CHEN Jian-she;WANG Chun-xin;LI Bin-chuan;HAN Qing;LIU Kui-ren(School of Metallurgy,Northeastern University,Shenyang 110819,China;Key Laboratory forRecycling of Nonferrous Metal Resources(Shenyang),Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]沈阳市有色金属资源循环利用重点实验室,辽宁沈阳110819

出　　处：《稀有金属与硬质合金》2023年第1期47-51,共5页Rare Metals and Cemented Carbides

基　　金：国家重点研发计划项目(2020YFC1909102)。

摘　　要：采用步冷曲线法测量了ScF_(3)-LiF熔盐的初晶温度,以等温饱和法测量了Sc_(2)O_(3)在ScF_(3)-LiF熔盐中的溶解度,研究了温度与ScF_(3)含量的影响。通过XRD探究了Sc_(2)O_(3)在ScF_(3)-LiF熔盐中的溶解原理。结果表明,ScF_(3)-LiF熔盐的初晶温度随ScF_(3)含量的增加而升高,添加Sc_(2)O_(3)会使初晶温度降低;Sc_(2)O_(3)在ScF_(3)-LiF熔盐中主要发生化学溶解,溶解平衡时间约为2 h,其溶解度随温度的升高及ScF_(3)含量的增大而增大。The liquidus temperature of ScF_(3)-LiF molten salt was measured by step cooling curve method.The solubility of Sc_(2)O_(3)in ScF_(3)-LiF molten salt was measured by the isothermal saturation method,and the effects of temperature and ScF_(3)content were studied.The dissolution mechanism of Sc_(2)O_(3)in ScF_(3)-LiF molten salt was analyzed by X-ray diffraction.The results show that the liquidus temperature of ScF_(3)-LiF molten salt rises with the increase of ScF_(3)content,while it decreases with the addition of Sc_(2)O_(3).The dissolution of Sc_(2)O_(3)in ScF_(3)-LiF molten salt is mainly chemical dissolution,the dissolution equilibrium time is about 2 h,and its solubility increases with the increase of temperature and ScF_(3)content.

关 键 词：Sc_(2)O_(3) ScF_(3)-LiF 熔盐电解 初晶温度 溶解度 

分 类 号：O645.4[理学—物理化学]