液膜分离技术结合了固体膜分离法和溶剂萃取法的特点，是一种新型的膜分离方法。
It is a new membrane separation technique combining the advantages of solid membrane separation and solvent extraction.
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.
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