1. Key Laboratory Coal Processing and Efficient Utilization of Ministry of Education, China University of Mining and Technology, Xuzhou, China
2. State Key Laboratory of Mineral Processing Science and Technology, Beijing Mining and Metallurgical Technology Group Co., Ltd, Beijing, China
3. School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, China
4. School of Environment Engineering, North China Institute of Science and Technology, Sanhe, China