Kane, Dalsimer, Kane, Sullivan and Kurucz
Method for separating rare earth metals
 Rare earth metals are adsorbed on an ion exchange fiber comprising an ion exchanger having a strong cation exchange group and a weak cation exchange group, and the adsorbed metals are fractionally eluted with an aqueous solution of a chelating agent, whereby the respective rare earth metals can be separated at high efficiency in a short time. According to this method, elution can be accomplished at an elution rate of 5.0 or above in terms of space velocity. 
Agency of Industrial Science & Technology Nitivy Co., Ltd. Seimi Chemical Co., Ltd.
C Y C Y B C C B C B
C01F Y10S C01F Y02P B01J C22B C01F B01J C22B B01J
inventional additional inventional additional inventional inventional inventional inventional inventional inventional
Tetsuro Hisao Aizo Tadao Mitsuo Shigeo Mitsutaka
Suehiro Ichijo Yamauchi Asami Suzuki Ogawa Uzumaki