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Key factors of eddy current separation for recovering aluminum from crushed e-waste

机译：从破碎电子废物中回收铝的涡流分离关键因素

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摘要

Recovery of e-waste in China had caused serious pollutions. Eddy current separation is an environment-friendly technology of separating nonferrous metallic particles from crushed e-waste. However, due to complex particle characters, separation efficiency of traditional eddy current separator was low. In production, controllable operation factors of eddy current separation are feeding speed, (ωR - v), and S_p. There is little special information about influencing mechanism and critical parameters of these factors in eddy current separation. This paper provided the special information of these key factors in eddy current separation of recovering aluminum particles from crushed waste refrigerator cabinets. Detachment angles increased as the increase of (ωR - v). Separation efficiency increased with the growing of detachment angles. Aluminum particles were completely separated from plastic particles in critical parameters of feeding speed 0.5 m/s and detachment angles greater than 6.61 deg. S_p/S_m of aluminum particles in crushed waste refrigerators ranged from 0.08 to 0.51. Separation efficiency increased as the increase of S_p/S_m. This enlightened us to develop new separator to separate smaller nonferrous metallic particles in e-waste recovery. High feeding speed destroyed separation efficiency. However, greater S_p of aluminum particles brought positive impact on separation efficiency. Greater S_p could increase critical feeding speed to offer greater throughput of eddy current separation. This paper will guide eddy current separation in production of recovering nonferrous metals from crushed e-waste.
机译：中国电子垃圾的回收已经造成了严重的污染。涡流分离是一种从压碎的电子废物中分离有色金属颗粒的环保技术。但是，由于颗粒特性复杂，传统涡流分离器的分离效率较低。在生产中，涡流分离的可控制操作因素是进给速度（ωR-v）和S_p。关于涡流分离中这些因素的影响机理和关键参数的专门信息很少。本文提供了这些关键因素的特殊信息，这些关键因素是从破碎的废冰箱柜中回收回收的铝颗粒的涡流分离。分离角随着（ωR-v）的增加而增加。分离效率随着分离角的增加而增加。在进料速度为0.5 m / s和分离角大于6.61度的关键参数中，铝颗粒与塑料颗粒完全分离。碎碎冰箱中铝颗粒的S_p / S_m为0.08至0.51。分离效率随着S_p / S_m的增加而增加。这启发了我们开发新的分离器，以分离电子废物回收中的较小的有色金属颗粒。高进料速度破坏了分离效率。但是，较大的铝颗粒S_p对分离效率产生积极影响。更高的S_p可以提高临界进给速度，从而提供更大的涡流分离产量。本文将指导从压碎的电子废物中回收有色金属的生产中的涡流分离。

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  • 来源
    《Waste Management》 |2017年第2期|84-90|共7页
  • 作者

    Jujun Ruan; Lipeng Dong; Jie Zheng; Tao Zhang; Mingzhi Huang; Zhenming Xu;

  • 作者单位

    School of Environmental Science and Engineering, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou 510275, People's Republic of China;

    School of Environmental Science and Engineering, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou 510275, People's Republic of China;

    School of Environmental Science and Engineering, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou 510275, People's Republic of China;

    School of Environmental Science and Engineering, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou 510275, People's Republic of China;

    School of Geography and Planning, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou 510275, People's Republic of China;

    School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    E-waste; Eddy current separation; Critical parameters; New separator;

    机译：电子垃圾涡流分离;关键参数;新的分隔符;

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