The methods of preparing high purity iron include solvent extraction, ion exchange, electrolytic refining, zone melting, and so on.

本文介绍了溶剂萃取、离子交换、电解精炼和区域熔炼等冶金提纯方法在高纯铁制备过程中的应用。

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By default, the Skip time zone extraction check box is cleared.

默认情况下会清除“跳过时区提取”复选框。

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

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。

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