1. Beijing Key Laboratory of Materials Utilization of Nonmetallic Mineralsand Solid Wastes National Laboratory of Mineral Materials School of Materials Science and Technology China University of Geosciences Beijing 100083 China
2. Nanyang Normal University Nanyang 473061 P. R. China
3. China Three Gorges University Yichang 443002 P. R. China
4. The University of Newcastle (UON) Callaghan NSW 2308 Australia
5. Chinese Academy of Sciences Beijing 100190 China