Thermodynamics and kinetics of lutetium extraction with HEH(EHP) in hydrochloric acid medium  

作　　者：董金诗 徐旸 王良士 黄小卫 龙志奇 巫圣喜 

机构地区：[1]National Engineering Research Center for Rare Earth Materials, General Research Institute for Non-Ferrous Metals [2]Grirem Advanced Materials Co., Ltd.

出　　处：《Journal of Rare Earths》2016年第3期300-307,共8页稀土学报（英文版）

基　　金：supported by National Natural Science Foundation of China(50934004);Beijing Nova Program

摘　　要：Solvent extraction has been the most widely used technique for rare earths separation. In this study, thermodynamics and kinetics of lutetium extraction with HEH（EHP） in hydrochloric acid medium were investigated. The extraction mechanism and the relevant parameters were determined by experiment research which can guide the practical extraction process. The data indicated that chloride ion had no effect on lutetium extraction, the rate constant increased when stirring speed was enhanced. Effects of temperature, HEH（EHP） concentration, acidity, and chloride concentration were also studied. Thickness of the diffusion film was also calculated to be 4.66×10^（-3） cm at 150 r/min.Solvent extraction has been the most widely used technique for rare earths separation. In this study, thermodynamics and kinetics of lutetium extraction with HEH（EHP） in hydrochloric acid medium were investigated. The extraction mechanism and the relevant parameters were determined by experiment research which can guide the practical extraction process. The data indicated that chloride ion had no effect on lutetium extraction, the rate constant increased when stirring speed was enhanced. Effects of temperature, HEH（EHP） concentration, acidity, and chloride concentration were also studied. Thickness of the diffusion film was also calculated to be 4.66×10^（-3） cm at 150 r/min.

关 键 词：EXTRACTION KINETICS THERMODYNAMICS LUTETIUM HEH （EHP） rare earths 

分 类 号：TF845[冶金工程—有色金属冶金]