Recovery of rare earths, lithium, and fluorine from rare earth molten salt electrolytic slag by mineral phase reconstruction combined with vacuum distillation
文献类型：期刊论文
| 作者 | Lai, Yaobin1,2; Li, Jian1,2; Zhu, Sitian1,2,5,6; Liu, Kejia1,2; Xia, Qiwen1,2; Huang, Mengling1,2; Hu, Guoping1,6; Zhang, Hui1,2,4,6; Qi, Tao1,2,3,4,6 |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 310页码:11 |
| ISSN号 | 1383-5866 |
| 关键词 | Rare earth molten salt electrolytic slag Lithium Mineral phase reconstruction Vacuum distillation Fluorine |
| DOI | 10.1016/j.seppur.2023.123105 |
| 英文摘要 | A novel green method for the recovery of rare earths (REs), fluorine (F), and lithium (Li) from rare earth molten salt electrolytic slag (REMSES) was proposed and demonstrated by mineral phase reconstruction combined with vacuum distillation. Kinetic analysis revealed that the roasting process was controlled by the chemical interface reaction. Under the optimized conditions (roasting temperature of 600 degrees C, LiOH center dot H2O dosage coefficient of 1.1 times, and roasting time of 4 h), NdF3 and NdOF in the slag were almost completely converted to LiF and Ca2Nd8(SiO(4))6O(2). The removal rate of F and recovery rate of LiF were 99.98 % and 98.96 %, respectively, at 1100 degrees C and 10 Pa for 1 h, indicating that F could be effectively removed by vacuum distillation. The F and Li were recovered as LiF with a purity of 99.8 wt%, which could then be recycled in the molten salt electrolysis process for the preparation of RE metals. The leaching rate of TREO from distillation residue was 99.27 % using hydrochloric acid. This process not only successfully achieved the green and efficient recovery of REs, Li, and F from REMSES, but also eliminated environmental pollution caused by the release of F. |
| WOS关键词 | EXTRACTION ; METALS |
| 资助项目 | Key Deployed Projects of the Chinese Academy of Sciences[ZDRW-CN-2021-3] ; Ganjiang Innovation Academy, Chinese Academy of Sciences[E055A002] ; Natural Science Youth Foundation of Jiangxi Province[20212BAB213031] ; General Project of the Key Research and Development Program of Ganzhou[202101124952] ; General Project of the Key Research and Development Program of Ganzhou[202101124954] ; Open Fund of Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths[213A0102] ; Open Fund of Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths[E03MYB0305] ; Double Thousand Plan of Jiangxi Province[jxsq2020105012] ; National Natural Science Foundation of China[22268048] ; National Key Research and Development Program of China[2022YFB3504300] ; Research Projects of Ganjiang Innovation Academy, Chinese Academy of Sciences[E055ZA01] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000923702700001 |
| 资助机构 | Key Deployed Projects of the Chinese Academy of Sciences ; Ganjiang Innovation Academy, Chinese Academy of Sciences ; Natural Science Youth Foundation of Jiangxi Province ; General Project of the Key Research and Development Program of Ganzhou ; Open Fund of Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths ; Double Thousand Plan of Jiangxi Province ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; Research Projects of Ganjiang Innovation Academy, Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/56944]  |
| 通讯作者 | Zhang, Hui; Qi, Tao |
| 作者单位 | 1.Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341000, Jiangxi, Peoples R China 2.Univ Sci & Technol China, Sch Rare Earths, Hefei 230026, Anhui, Peoples R China 3.Nanchang Univ, Sch Chem & Chem Engn, Nanchang 330031, Jiangxi, Peoples R China 4.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 5.Zhengzhou Univ, Henan Inst Adv Technol, Zhengzhou 450000, Henan, Peoples R China 6.Jiangxi Prov Key Lab Cleaner Prod Rare Earths, Ganzhou 341000, Jiangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lai, Yaobin,Li, Jian,Zhu, Sitian,et al. Recovery of rare earths, lithium, and fluorine from rare earth molten salt electrolytic slag by mineral phase reconstruction combined with vacuum distillation[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2023,310:11. |
| APA | Lai, Yaobin.,Li, Jian.,Zhu, Sitian.,Liu, Kejia.,Xia, Qiwen.,...&Qi, Tao.(2023).Recovery of rare earths, lithium, and fluorine from rare earth molten salt electrolytic slag by mineral phase reconstruction combined with vacuum distillation.SEPARATION AND PURIFICATION TECHNOLOGY,310,11. |
| MLA | Lai, Yaobin,et al."Recovery of rare earths, lithium, and fluorine from rare earth molten salt electrolytic slag by mineral phase reconstruction combined with vacuum distillation".SEPARATION AND PURIFICATION TECHNOLOGY 310(2023):11. |
入库方式： OAI收割
来源：过程工程研究所
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