1. Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
2. Shandong Polytechnic College,Jining, Shandong 272067, China
3. College of Mining Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
4. State Key Laboratory of Mineral Processing, BGRIMM Technology Group, Beijing 100160, China
5. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
6. Minerals and Metallurgical Engineering, Swedish School of Mines, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, Luleå SE-971 87, Sweden