The three main methods for high purity zinc preparation, including electrolytic method, vacuum distillation, zone refining, are summarized and compared in this paper.
本文对目前高纯锌的三种主要制备方法(电解法、真空蒸馏法、区域熔炼法)进行了综述和比较。
The new liquid distributor has been already applied in revamping of the washing zone in crude vacuum distillation tower with high temperature, small flowrate, dirt and easy-coking material.
新型液体分布器已应用到温度高、液量小、物系脏、易结焦的原油减压蒸馏塔洗涤段的改造中。
Then the zone refine is also discussed, and shows that zone refine can produce higher purity antimony on the basis of vacuum distillation.
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。
A new mathematical model, designated as two-zone nonequilibrium stage model, for simulating an industrial distillation tower, especially the tower with large diameter is presented in this paper.
提出一种对工业塔，尤其是大塔径精馏塔进行数学模拟的实用方法非平衡级双区模型。
A new mathematical model, designated as two-zone nonequilibrium stage model, for simulating an industrial distillation tower, especially the tower with large diameter is presented in this paper.
提出一种对工业塔，尤其是大塔径精馏塔进行数学模拟的实用方法非平衡级双区模型。
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