1. State Key Laboratory of Complex Nonferrous Metal Resources Clear Utilization, Kunming University of Science and Technology, Kunming, 650093, PR China
2. National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China
3. Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China
4. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China