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- Title
Selective Separation and Recovery of Valuable Metals by Vacuum Distillation of Copper Anode Slime Flotation Tailings.
- Authors
Zha, Guozheng; Yang, Bin; Guo, Xinyu; Jiang, Wenlong; Yang, Chongfang
- Abstract
The combination of flotation and metallurgical processing to treat copper anode slime produces approximately 1400 tons of flotation tailings every year in Yunnan Province. These tailings contain a large amount of valuable metals. In this article, a vacuum distillation three-stage condensation process is proposed to efficiently and selectively separate valuable metals. A laboratory-scale experiment was carried out under the conditions of 1273 K, 120 min and 0.1–5 Pa. The precious metals silver (95.4%) and gold (96.9%) were recovered in the residue; the base metals lead (99.7%), antimony (95.8%) and bismuth (99.8%) were removed and mainly concentrated in the first volatile phases; the rare metals selenium (90.9%) and tellurium (92.2%) were enriched in the second volatile phase. No waste was produced. This method represents a new technology for the treatment of flotation tailings and provides guidance for industrialization by vacuum distillation.
- Subjects
YUNNAN Sheng (China); METAL tailings; NONFERROUS metals; PRECIOUS metals; DISTILLATION; FLOTATION; METALS
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2019, Vol 71, Issue 7, p2413
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-019-03479-8