稀土类金属是磁性材料和光学材料为主的各种功能性材料中必不可少的重要组成元素,为了提高现有材料的性能并开发新的功能性材料,在原料中使用高纯度稀土金属是必要条件。但是,利用现有技术制取的稀土金属的纯度还不够高。其中不纯物大部分为氧和氮组成的气体成分。为了达到更高 Rare earth metals are the important constituent elements of various functional materials mainly including magnetic materials and optical materials. In order to improve the performance of existing materials and develop new functional materials, the use of high purity rare earth metals in the raw materials is Necessary conditions. However, the purity of rare earth metals prepared by the prior art is not high enough. Most of the impurities are oxygen and nitrogen gas components. In order to reach higher