本文研究了柱萃取色谱法分离铽和镝过程中进料量及料液浓度对Tb—Dy分离的影响。发现淋洗曲线图中各元素的淋洗峰随进料量增加峰前沿往前移,峰后沿基本不偏移。因此,前峰元素铽含量高有利于分离,后峰元素镝含量高不利于分离。进料时料液中稀土浓度适应范围很广,但以不大于86g/l(以及RE_2O_3计)为宜。 In this paper, the effect of feed volume and feed concentration on the separation of Tb-Dy during the separation of terbium and dysprosium by column chromatography was studied. It is found that the leaching peak of each element in the leaching curve moves forward with the increase of the feeding amount, and the peak trailing edge basically does not shift. Therefore, the former peak element terbium content is conducive to separation, the latter peak element dysprosium content is not conducive to separation. Feeding liquid rare earth concentration to adapt to a wide range, but not more than 86g / l (and RE_2O_3 dollars) is appropriate.