1. School of Chemical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
2. National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
3. School of Electric Power Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
4. Department of Mechanical and Electrical Engineering, Beijing Jiaotong University Haibin College, Huanghua, Hebei 061199, China
5. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, Henan 450001, China