1. School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), No.11, Xueyuan Road, Haidian District, Beijing 100083, China
2. State Key Laboratory of Coal Resources and Safe Mining (CUMTB), Beijing 100083, China
3. College of Resources & Safety Engineering, China University of Mining & Technology (Beijing), No.11, Xueyuan Road, Haidian District, Beijing 100083, China