强制搅拌对Na3AlF6-AlF3-CaF2熔盐体系中TiO2溶解的影响  

Effect of Forced Stirring on Dissolution of TiO2 in Na3AlF6-AlF3-CaF2 Molten Salt System

作　　者：余娅红 张念炳[1] 耿芃[1] 周军[1] YU Ya-hong;ZHANG Nian-bing;GENG Peng;ZHOU Jun(College of Material and Civil Engineering,Guizhou Normal University,Guiyang 550001,China)

机构地区：[1]贵州师范大学材料与建筑工程学院,贵阳550001

出　　处：《有色金属（冶炼部分）》2020年第12期31-35,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：贵州省普通高等学校科技拔尖人才支持计划项目(黔教合KY字[2016]062)。

摘　　要：采用等温饱和法研究了静置和搅拌状态对TiO2在Na3AlF6-AlF3-CaF2熔盐体系中的溶解速率及溶解量的影响,分别对空冷和水淬处理的熔盐样品进行X射线衍射分析。结果表明,熔盐温度为960℃时,静置状态下,TiO2的溶解量随溶解时间的延长而增加,溶解120 min时的溶解量为2.33%;搅拌条件下,提高了溶解速率,溶解120 min时的溶解量为5.33%;XRD分析表明二氧化钛在熔盐体系中以TiO2相存在。Effects of static condition and stirring condition on dissolution rate and amount of TiO2 in Na3AlF6-AlF3-CaF2 molten salt system were studied by isothermal saturation method.The samples of molten salt treated by air cooling and water quenching were analyzed by X-ray diffraction.The results show that TiO2 dissolved amount under static condition rises with prolongation of dissolution time,and dissolution amount is 2.33%at 120 min when the temperature of molten salt is 960℃while,it is 5.33%under stirring condition.XRD analysis shows that titanium dioxide exists in form of TiO2 phase in molten salt system.

关 键 词：熔盐 TIO2 搅拌 溶解量 

分 类 号：TF821[冶金工程—有色金属冶金] TQ522.65[化学工程—煤化学工程]