Constructing environment-friendly return road of metals from e-waste: Combination of physical separation technologies
Constructing environment-friendly return road of metals from e-waste: Combination of physical separation technologies
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构建电子垃圾金属环保回收之路：物理分离技术相结合
DOI：
10.1016/j.rser.2015.10.114
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发表时间：
2016-02
影响因子：
15.9
通讯作者：
Zhenming Xu
中科院分区：
文献类型：
--
作者：
Jujun Ruan;Zhenming Xu
金属是工业生产的重要原材料，随着世界的发展，金属的消费量也越来越大。人们总是热衷于寻找新的金属资源，即使结果越来越令人失望。因此，回收消耗的金属对世界的实质性发展至关重要。电子垃圾是伴随着电子工业的创新而迅速产生的。电子垃圾被称为城市矿山和金属，占70%以上。回收电子垃圾对回收金属具有重要意义。然而，由于采用了原油回收技术，电子垃圾回收场所产生了严重的环境污染。环境友好、高效的技术已经成为从电子垃圾中回收金属的迫切需求。本文报道了如何从电子垃圾中建设环境友好的金属回收道路。建议采用破碎、磁选、涡流分选、电晕静电分选、真空冶金分选等物理技术修筑道路。为了提高回程路的效率，提出了每项技术的完成工作和下一步工作。为了提高回收金属的附加值，计划在返程路上进行进一步加工。此外，还提出了在返程公路环境友好建设方面的一些努力。最后，报道了从电子垃圾中建立的三条金属回收路(金属回收率超过88%)。希望本文能够为电子垃圾的处理和循环经济的发展做出贡献。
Metals are vital raw materials for industrial production and are consuming rapidly as the development of the world. People are always enthusiasm about searching new metal resource even if the results are more and more disappointed. Thus, return of consumed metals is crucial for substantial development of the world. E-waste was rapidly generated together with the innovation of electronic industry. E-waste is called urban mine and metals accounted for above 70 wt%. Recover e-waste is significant for returning metals. However, because of employing crude recovery technology, serious environmental pollution had been generated in the places of recovering e-waste. Environment-friendly and efficient technology has been the pressing demand in the return of metals from e-waste. This paper reported how to construct environment-friendly return road of metals from e-waste. The road was advised to be constructed by physical technologies of crushing, magnetic separation, eddy current separation, corona electrostatic separation, vacuum metallurgy separation and et al. For improving the efficient of the return road, the finished and future works of each technology were presented and proposed. For improving the added value of the recovered metals, further processing was planned in the return road. Additionally, some efforts on environmental friendly construction of the return road were presented. At last, three constructed return roads of metals (above 88 wt% metals were recovered) from e-waste were reported. We expect this paper can contribute to the treatment of e-waste and the development of cyclic economy.
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