1. Key Laboratory of Coal Processing & Efficient Utilization, Ministry of Education, Xuzhou, Jiangsu, China
2. School of Chemical Engineering & Technology, China University of Mining & Technology, Xuzhou, Jiangsu, China
3. Sun Yueqi Honors College, China University of Mining & Technology, Xuzhou, Jiangsu, China
4. Ordos Science and Technology Development Center, Ordos, China