1. National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, PR China
2. School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, PR China
3. School of Transportation Engineering, Jiangsu Vocational Institute of Architectural Technology, Xuzhou, PR China
4. Jiangsu Engn lab Biomass Resources Comprehens Uti, Jiangsu Vocational Institute of Architectural Technology, Xuzhou, PR China