1. School of Metallurgy and Environment, Central South University, Changsha 410083, P. R. China
2. Sichuan Yahua Industrial Group Co., Ltd., Chengdu 610000, P. R. China
3. Solid Waste and Chemicals Management Center, Ministry of Ecology and Environment, Beijing 100000, P. R. China
4. Zhengzhou Non-ferrous Metals Research Institute Co., Ltd. of Chalco, Zhengzhou 450000, P. R. China