Mining College of Guizhou University,Guiyang, china,550003；/GuiZhou Key Laboratory of Comprehensive Utilization of Non-metallic mineral Resources,Guiyang,Guizhou china,550003
Kunmin Metallurgy Graduate School,kunming,china,650031;
Copyright © Zhihong Liu, Jian Cheng et al. This is
an open access article distributed under the Creative Commons Attribution
License, which permits unrestricted use, distribution, and reproduction in any
medium, provided the original work is properly cited.