Purifying selenium by vacuum distillation. Metal selenium purification is on the base of different elemental volatility.
真空蒸馏提纯硒利用元素的挥发性不同进行金属硒的提纯。
2
The results showed that the heavy metal cadmium could be effectively separated by vacuum distillation to produce high purity cadmium (>99%).
实验结果表明：利用真空蒸馏可以实现镍镉电池中镉与其它金属的有效分离，并得到纯度大于99%的金属镉；
3
When extracting metal germanium with distillation, this soot treated by roasting could effectively control flooding and increase utilization of germanium.