Thermodynamics and kinetics of lutetium extraction with HEH(EHP) in hydrochloric acid medium
来源期刊：JOURNAL OF RARE EARTHS2016年第3期
论文作者：董金诗 徐旸 王良士 黄小卫 龙志奇 巫圣喜
文章页码：300 - 307
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.
董金诗1，徐旸1,2，王良士1,2，黄小卫1,2，龙志奇1,2，巫圣喜1
1. National Engineering Research Center for Rare Earth Materials, General Research Institute for Non-Ferrous Metals2. Grirem Advanced Materials Co., Ltd.
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.
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