稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
Journal of Rare Earths
2015年
10期
1114-1121
,共8页
侯海龙%靖宇%王月%王运东%徐建鸿%陈晋南
侯海龍%靖宇%王月%王運東%徐建鴻%陳晉南
후해룡%정우%왕월%왕운동%서건홍%진진남
rare earths%solvent extraction%membrane dispersion%overall volume mass transfer coefficient
By using membrane dispersion micro-extractor, Ce(III) solvent extraction experiments were conducted. Cerium chloride solution with certain acidity was used as aqueous phase and 2-ethylhexyl phosphoric acid-2-ethylhexyl ester (EHEHPA) kerosene solution as organic phase. The effects of system physicochemical properties and operational conditions, such as initial EHEHPA con-centration, initial aqueous acidity, total flow rate and continuous phase flow rate, etc., on the extraction efficiency and the overall volume mass transfer coefficient were evaluated. As the total flow rate increased from 20 to 160 mL/min, the overall volume mass transfer coefficient was enhanced from 0.1 to 0.54 s–1. Under the optimal conditions, the Ce(III) extraction efficiency could reach 99.92% in 2.98 s. A mathematical model was set up to predict the overall volume mass transfer coefficient, and the calculation results agreed well with the experimental results, most relative error was within ±10%.
