1. Jiangxi Province Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 34100, China
2. Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510650, China
3. Department of Chemical Engineering, Perm National Research Polytechnic University, Perm 614990, Russia
4. Hunan Academy of Forestry, Changsha, Hunan 410004, China
5. School of Chemical Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia