1. College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, P. R. China
2. Collaborative Innovation Center of Panxi Strategic Mineral Resources Multi-Purpose Utilization, Chengdu University of Technology, Chengdu 610059, P. R. China
3. Qinghai Key Laboratory of Sulfate Salt Lakes Multipurpose Utilization, Golmud, Qinghai 816000, P. R. China