目前制备99.999%以上金属高纯钴的制备方法很多，主要制备工艺有萃取法，膜分离法，离子交换法，电解法，区域熔炼法等方法。

There were many methods for preparing cobalt metal of 99.999% purity, such as extraction, membrane separation, ion exchange, electrolysis, zone melting etc.

youdao

目前制备99.999%以上金属高纯钴的制备方法很多，主要制备工艺有萃取法，膜分离法，离子交换法，电解法，区域熔炼法等方法。

There were many methods for preparing cobalt metal of 99.999% purity, such as extraction, membrane separation, ion exchange, electrolysis, zone melting etc.

youdao