1. School of Metallurgy and Environment, Central South University, 932 Lushan South Road, Changsha 410083, China
2. School of Materials and Architectural Engineering, Guizhou Normal University, 116 Baoshan North Road, Guiyang 550001, China
3. School of Metallurgy and Environment, National Engineering Laboratory for Efficient Utilization of Refractory Nonferrous Metal Resources, Central South University, 932 Lushan South Road, Changsha 410083, China
4. Department of Educational Science, Hunan First Normal University, 1015 Fenglin Road (the 3rd), Changsha 410205, China