| Metal recycling from waste memory modules efficiently and environmentally friendly by low-temperature alkali melts | |
| Zhu, MingWei1; Ma, HaoBo1,2; He, Jie2; Chen, Bin2; Zhang, LiLi2; Jiang, HongXiang2; Sun, XiaoJun2; Zhao, JiuZhou2 | |
| Corresponding Author | He, Jie(jiehe@imr.ac.cn) |
| 2020-08-07 | |
| Source Publication | SCIENCE CHINA-TECHNOLOGICAL SCIENCES
 |
| ISSN | 1674-7321 |
| Pages | 8 |
| Abstract | Recycling of waste electrical and electronic equipment has become an urgent global issue in recent years from the prospectives of resources recycling and environmental protection. In the present work, the recycling of waste memory modules (WMMs) through low-temperature alkali melts was investigated, based on the thermodynamic analysis of the nonmetallic reactions of brominated epoxy resin, glass fiber and memory chip with the molten mixed alkali. The effects of the reaction temperature and the ratio of alkali mixture on the removal rate of nonmetallic parts in WMMs were discussed under the condition of air atmosphere. The optimum process parameters were further confirmed by in-situ monitoring of the temperature during the whole reaction process. The mixtures with Cu, Fe and Ni as the main components were obtained after the treatment of WMMs in the molten alkali. These mixed metals were further separated into copper-rich and ferronickel-rich metals by physical magnetic separation. Moreover, the precious metals Au and Ag were enriched in Cu-rich alloys. This work provided an efficient and environment-friendly method for metal recycling from WMMs. |
| Keyword | metal recycling waste memory module molten alkali precious metal |
| Funding Organization | National Natural Science Foundation of China ; Liaoning Provincial Department of Education ; Natural Science Foundation of Liaoning Province of China ; Key Project of Innovation Foundation of IMR-CAS |
| DOI | 10.1007/s11431-020-1624-8 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51974288] ; National Natural Science Foundation of China[51574216] ; National Natural Science Foundation of China[51774264] ; National Natural Science Foundation of China[51901231] ; Liaoning Provincial Department of Education[JYT19063] ; Natural Science Foundation of Liaoning Province of China[2019-MS-332] ; Key Project of Innovation Foundation of IMR-CAS[SCJJ-2013-ZD-03] |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Multidisciplinary ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000559293600001 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/140238 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | He, Jie |
| Affiliation | 1.Shenyang Aerosp Univ, Sch Mat Sci & Engn, Shenyang 110136, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Zhu, MingWei,Ma, HaoBo,He, Jie,et al. Metal recycling from waste memory modules efficiently and environmentally friendly by low-temperature alkali melts[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2020:8. |
| APA | Zhu, MingWei.,Ma, HaoBo.,He, Jie.,Chen, Bin.,Zhang, LiLi.,...&Zhao, JiuZhou.(2020).Metal recycling from waste memory modules efficiently and environmentally friendly by low-temperature alkali melts.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,8. |
| MLA | Zhu, MingWei,et al."Metal recycling from waste memory modules efficiently and environmentally friendly by low-temperature alkali melts".SCIENCE CHINA-TECHNOLOGICAL SCIENCES (2020):8. |
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