Supergravity-enhanced liquation crystallization for metal recovery from waste printed circuit boards
文献类型：期刊论文
| 作者 | Feng, Peng2; Wang, Zhe2; Meng, Long1,2; Guo, Zhancheng2 |
| 刊名 | Chemical Engineering and Processing - Process Intensification
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 173 |
| ISSN号 | 2552701 |
| 关键词 | Cost effectiveness - Gravity waves - Iron alloys - Lead alloys - Metal recovery - Printed circuit boards - Separation - Timing circuits - Zinc alloys |
| DOI | 10.1016/j.cep.2022.108813 |
| 英文摘要 | Waste printed circuit boards (WPCBs) present serious threats to the environment but also the opportunity to recover the valuable metals, motivating a search for processes to allow their cost-effective recycling. In this regard, the advantages afforded by liquation crystallization and supergravity technology were combined herein to develop a new supergravity-enhanced liquation crystallization process for recovering metals from WPCBs. The WPCB particles were fully smelted to obtain WPCB alloy. Fe-rich, Cu鈥揨n, Cu鈥揝n, and Pb-rich phases were progressively precipitated from the alloy melt as the temperature decreased and subsequently stratified from top to bottom after supergravity-induced enrichment owing to their different densities. Fe-rich, Cu鈥揨n, Cu鈥揝n, and Pb-rich alloys were obtained via supergravity-assisted separation at 1100, 850, and 500 掳C, respectively. The mass fractions of Fe in the Fe-rich alloy, (Cu + Zn) in the Cu鈥揨n alloy, (Cu + Sn) in the Cu鈥揝n alloy, and Pb in the Pb-rich alloy reached 81.8 wt.%, 92.9 wt.%, 91.2 wt.%, and 94.6 wt.%, respectively, in the three separation steps. The final recoveries of Fe, Cu, Zn, Sn, and Pb after three supergravity-assisted separation stages reached 98.8%, 97.8%, 94.1%, 96.9%, and 97.4%, respectively. This study demonstrates an efficient method for separating metals from WPCBs and improving the grade of the separated metals. 漏 2022 |
| 学科主题 | Metals |
| 项目编号 | This work was financially supported by the National Natural Science Foundations of China (Nos. 51704022 and 52004264 ) and the project of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization (CNMRCUKF2005) and the Fundamental Research Funds for the Central Universities ( FRF-TP-20-018A3 ). |
| 出版者 | Elsevier B.V. |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61196]  |
| 作者单位 | 1.Institute of Process Engineering, Chinese Academy of Sciences, No.1 Beier Tiao, Beijing; 100190, China 2.State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing; 100083, China |
| 推荐引用方式 GB/T 7714 | Feng, Peng,Wang, Zhe,Meng, Long,et al. Supergravity-enhanced liquation crystallization for metal recovery from waste printed circuit boards[J]. Chemical Engineering and Processing - Process Intensification,2022,173. |
| APA | Feng, Peng,Wang, Zhe,Meng, Long,&Guo, Zhancheng.(2022).Supergravity-enhanced liquation crystallization for metal recovery from waste printed circuit boards.Chemical Engineering and Processing - Process Intensification,173. |
| MLA | Feng, Peng,et al."Supergravity-enhanced liquation crystallization for metal recovery from waste printed circuit boards".Chemical Engineering and Processing - Process Intensification 173(2022). |
入库方式： OAI收割
来源：过程工程研究所
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