1. Kunming University of Science and Technology Faculty of Metallurgical and Energy Engineering 650093 Kunming China
2. National Engineering Laboratory for Vacuum Metallurgy 650093 Kunming China
3. Ministry of Education Engineering Research Center of Metallurgical Energy Conservation & Emission Reduction 650093 Kunming China
4. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization 650093 Kunming China
5. Shanghai University State Key Laboratory of Advanced Special Steel Shanghai China