New insight into oxidative roasting and leaching for NdFeB waste
文献类型：期刊论文
| 作者 | Zhang, Zhihan1,3; Dong, Wang2,3; Liu, Chenghao1,3; Wang, Zhi2,3; Xiao, Wanhai3; Qian, Guoyu2,3; Li, Guobiao3 |
| 刊名 | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 10期号:6页码:9 |
| 关键词 | NdFeB waste RE Recycling Roasting HCl consumption Mechanism |
| ISSN号 | 2213-2929 |
| DOI | 10.1016/j.jece.2022.108946 |
| 英文摘要 | NdFeB waste is an essential rare earth (RE) resource, which is the unique solid waste to realize large-scale RE recovery via HCl preferential dissolution method. However, the challenges of low oxidation efficiency and high acid consumption are seriously hindering RE efficient recovery. Herein, the mechanism between the phase structure transformation of roasting RE solid waste and RE elements' leaching behavior was first explored. The results showed the oxidation efficiency of NdFeB oil sludge (NOS) was improved from 2.5 % to 99.2 % with the temperature increasing. And a leaching model was proposed: Dense Layer Structure (<= 400 degrees C), Loose Layer Structure (400-600 degrees C), and RE Insoluble Structure (>= 600 degrees C). The analysis of the leaching model indicates the dense oxide layer and the RE insoluble structure (RE insoluble NdFeO3 phase and particle adhesion) will affect the leaching efficiency of RE elements. Based on the oxidation efficiency, XPS, SEM, Raman, FTIR, and EDSmapping analysis, an external oxide layer was verified on the microparticle of roasted NOS. Furthermore, the corresponding mechanism is discussed, and the improvement strategies are put forward. This study will supply a new insight into the theoretical basis for efficient and low HCl consumption recycling of NdFeB waste. |
| WOS关键词 | ND-FE-B ; MAGNET SCRAP ; RECOVERY ; TEMPERATURE ; EXTRACTION ; EVOLUTION ; POWDER |
| 资助项目 | National Key Research and Development Program of China[2020YFC1909004] ; National Natural Science Foundation of China[51974286] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-3-3] ; self-deployed Projects of Ganjiang Innovation Academy, Chinese Academy of Sciences[E055A002] ; Jiangxi Province Key Labo-ratory of Cleaner Production of Rare Earths[E03MYB0307] ; Jiangxi Province Key Labo-ratory of Cleaner Production of Rare Earths[213A0103] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000915357500003 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; self-deployed Projects of Ganjiang Innovation Academy, Chinese Academy of Sciences ; Jiangxi Province Key Labo-ratory of Cleaner Production of Rare Earths |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/56873]  |
| 通讯作者 | Dong, Wang; Li, Guobiao |
| 作者单位 | 1.Univ Sci & Technol China, Sch Rare Earths, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr Green Recycling Strateg Met Reso, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Ganjiang Innovat Acad, Jiangxi Prov Key Lab Cleaner Prod Rare Earths, Ganzhou 341000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zhihan,Dong, Wang,Liu, Chenghao,et al. New insight into oxidative roasting and leaching for NdFeB waste[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2022,10(6):9. |
| APA | Zhang, Zhihan.,Dong, Wang.,Liu, Chenghao.,Wang, Zhi.,Xiao, Wanhai.,...&Li, Guobiao.(2022).New insight into oxidative roasting and leaching for NdFeB waste.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,10(6),9. |
| MLA | Zhang, Zhihan,et al."New insight into oxidative roasting and leaching for NdFeB waste".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 10.6(2022):9. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。