日本东北大学新近开发成功一种高效分离稀土元素的方法 ,利用低卤化物形成稀土元素盐 (二价盐 ) ,是不同于传统溶剂萃取法和离子交换法的一种干式高效率分离法。稀土元素的低卤化物盐相对于三价的稀土类盐 ,其蒸气压差较小 ,容易与蒸发的三价盐分离。所用的实验装置采用置于两? Japan’s Tohoku University recently successfully developed a highly efficient separation of rare earth elements, the use of low-halide formation of rare earth salts (divalent salt), is different from the traditional solvent extraction and ion exchange method of a dry high-efficiency separation. The low halide salt of the rare earth element has a smaller vapor pressure difference with respect to the trivalent rare earth salt and is easily separated from the evaporated trivalent salt. The experimental device used is placed in two?