Separating and recycling metal mixture of pyrolyzed waste printed circuit boards by a combined method
文献类型：期刊论文
| 作者 | Chen, Bin1,2; He, Jie1,2; Sun, Xiaojun1,2; Zhao, Jiuzhou1,2; Jiang, Hongxiang1; Zhang, Lili1 |
| 刊名 | WASTE MANAGEMENT
 |
| 出版日期 | 2020-04-15 |
| 卷号 | 107页码:113-120 |
| 关键词 | Metal recycling Liquid-liquid phase separation Waste printed circuit boards Low-temperature alkaline smelting Noble metals |
| ISSN号 | 0956-053X |
| DOI | 10.1016/j.wasman.2020.04.006 |
| 通讯作者 | He, Jie(jiehe@imr.ac.cn) |
| 英文摘要 | Waste printed circuit boards (WPCBs) contain a variety of valuable and hazardous materials. Recycling WPCBs is an important subject not only for environmental protection but also for sustainable development of resources. In this work, a new method combined low-temperature alkaline smelting with liquid-liquid phase separation is proposed to separate and recycle metal mixture in pyrolysis residue of WPCBs of mobile phones. During the low-temperature alkaline smelting process, amphoteric metals Al, Pb, Si, Sn, and Zn are firstly separated and recycled from the metal mixture with the separation rates of 99.5%, 81.6%, 97.8%, 88.4% and 95.7%, respectively. To separate the remaining metal mixture mainly containing elements Cu, Fe, Cr, Ni, Au and Ag, a liquid-liquid phase separation system is designed. As a result, the noble metals Au and Ag are concentrated in the copper-rich substance to form a high-value group, while the elements Ni and Cr distribute in the iron-rich substance. The iron-rich substance can be reused in the liquid -liquid phase separation process. In the super-gravity field, the recycling rates of the metals Au, Ag, Cr and Ni reach 98.1%, 99.8%, 95.6% and 75.4%, respectively. Furthermore, the iron-rich substance can be reused back to the liquid-liquid separation system. The copper-rich substance enriched by the noble metals can be efficiently recovered with low energy consumption and less pollution. This work provides an environmentally friendly and efficient route for separating and recycling the metal mixture in WPCBs. (C) 2020 Elsevier Ltd. All rights reserved. |
| 资助项目 | National Nature Science Foundation of China[51974288] ; National Nature Science Foundation of China[51774264] ; National Nature Science Foundation of China[51574216] ; National Nature Science Foundation of China[51374194] ; National Nature Science Foundation of China[51901231] ; Alexander von Humboldt-Stiftung ; Natural Science Foundation of Liaoning Province of China[2019-MS-332] ; Natural Science Foundation of Liaoning Province of China[2019-BS-253] ; key project of innovation foundation of IMR-CAS[SCJJ-2013-ZD-03] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000536511400013 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Nature Science Foundation of China ; Alexander von Humboldt-Stiftung ; Natural Science Foundation of Liaoning Province of China ; key project of innovation foundation of IMR-CAS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/138904]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | He, Jie |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Bin,He, Jie,Sun, Xiaojun,et al. Separating and recycling metal mixture of pyrolyzed waste printed circuit boards by a combined method[J]. WASTE MANAGEMENT,2020,107:113-120. |
| APA | Chen, Bin,He, Jie,Sun, Xiaojun,Zhao, Jiuzhou,Jiang, Hongxiang,&Zhang, Lili.(2020).Separating and recycling metal mixture of pyrolyzed waste printed circuit boards by a combined method.WASTE MANAGEMENT,107,113-120. |
| MLA | Chen, Bin,et al."Separating and recycling metal mixture of pyrolyzed waste printed circuit boards by a combined method".WASTE MANAGEMENT 107(2020):113-120. |
入库方式： OAI收割
来源：金属研究所
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。