In this work, on the basis of thermodynamic considerations, a horizontal fractional condensing vacuum (HFCV) furnace was designed to purify primary magnesium ingot by vacuum distillation. In the volatilization process, most of the impurities were remained in the residue, and a few impurities volatilized with magnesium could condense at different temperature regions in condensation process. Finally, magnesium more than 99.999% (5 N) purity was collected in the high temperature condensation region and magnesium more than 4 N was collected in the lower temperature region by one step. Besides, the content of Fe and Zn was effectively controlled in the experiment process.

中文翻译：

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真空蒸馏技术一步法制备高纯镁

在这项工作中，基于热力学考虑，设计了卧式分馏真空（HFCV）炉，通过真空蒸馏来纯化初级镁锭。在挥发过程中，大部分杂质残留在残渣中，少量随镁挥发的杂质在冷凝过程中会在不同的温度区域发生冷凝。最后，在高温冷凝区收集纯度超过99.999%（5N）的镁，在低温区一步收集超过4N的镁。此外，在实验过程中有效控制了Fe和Zn的含量。