Kunjie Li
Shanxi Provincial Guoxin Energy Development Group Company Limited, Taiyuan 030024, P. R. China
China

Shaoqi Kong
Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, P. R. China
China

Peng Xia
College of Resource and enviornmental Engineering, Guizhou University, Guiyang 550025, P. R. China
China

Xiaoling Wang
College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
China