1. School of Rare Earths, University of Science and Technology of China, Hefei 230026, China
2. Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China
3. CAS Key Laboratory of Green Process and Engineering, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
4. Baogang Group Mining Research Institute Co., Ltd., Baotou 014060, China