摘要
研究了以聚丙稀为支撑膜、以二（２－乙基已基）磷酸为载体提取稀土的支撑液膜体系，通过实验确定了料液的ｐＨ值、载体浓度等与稀土离子渗透系数之间的关系；建立了动力学方程；并计算了料液－膜测传质边界层的厚度和稀土配合物在膜内的扩散系数．
Separation of rare earths from rare earth ore leach solution with di-（2－ethylhexyl）phos-phoric acid as extractant is carried out with supported liquid membrane，The kinetics of ex-traction can be expressed,as a function of aciditv of the feed solution and the concentrationof membrane carries. The coupled-transport model describing the permeability coefficient ofRe^(3+) is derived．The experimental results are in agreement with the theoretical value.
基金
湖南省科委科研基金
关键词
动力学方程
支撑液膜
稀土族
浸出
rare earth elements；kinetics equation；supported liquid membrane
