Xiaoming Liu received his Ph.D. from the China University of Mining and Technology (Beijing) in 2010. He had a doctoral joint training at the University of Wisconsin-Madison, USA from August 2007 to August 2009. He finished his postdoctoral study at the University of Science and Technology Beijing in 2012. He is currently a Professor at the University of Science and Technology Beijing. His research interests mainly focus on the preparation of ecological materials by using industrial solid wastes, and some valuable element extraction in solid wastes.