1. Faculty of Environmental Science and Engineering; Kunming University of Science and Technology; Kunming, 650500 China
2. Faculty of Metallurgical and Energy Engineering; Kunming University of Science and Technology; Kunming, 650093 China
3. State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province/The National Engineering Laboratory for Vacuum Metallurgy; Kunming University of Science and Technology; Kunming, 650093 China
4. Key Laboratory of Non-Ferrous Metals Vacuum Metallurgy of Yunnan Province/Engineering Research Center for Silicon Metallurgy and Silicon Materials of Yunnan Provincial Universities; Kunming, 650093 China