本文讨论了在湿氢条件下，进行硅的无坩埚区域提纯时，所遇到的几个问题。
Synopsis: Some problems on zone refining of silicon without crucible by wet hydrogen treatment are discussed.
在分析真空蒸馏的同时将区域提纯进行了理论分析，证明利用区域提纯技术可以在真空提纯的基础上制备纯度更高的金属锑。
Then the zone refine is also discussed, and shows that zone refine can produce higher purity antimony on the basis of vacuum distillation.
为提高防老剂BHT的纯度，采用重结晶和区域熔融法对工业品防老剂BHT进行提纯。
In order to improve the purity of industrial product, Antioxidant BHT was purified by the methods of recrystalize and zone melting.
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。
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。
The methods of preparing high purity iron include solvent extraction, ion exchange, electrolytic refining, zone melting, and so on.
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