Research and industrial application of a vacuum separation ...
2020-4-1 · A novel, clean and highly efficient vacuum separation technique for the commercial processing of copper dross is introduced in this article.The industrial treatment of 500 kg copper dross showed that under the conditions of 1523 K, 20–150 Pa and 5 h of heat preservation, three kinds of products can be obtained by vacuum distillation, namely, crude lead, lead sulfide, and
