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A novel flowsheet for the recovery of metal values from waste printed circuit boards

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  • Das, A.
  • Vidyadhar, A.
  • Mehrotra, S.P.

Abstract

Recovery of metal values from waste printed circuit boards using physical beneficiation techniques was studied. A novel flowsheet using a combination of wet and dry unit operations was developed to achieve the separation of metals from non-metallic constituents. The wet concentration circuit consisted of flowing film concentration in tabling, flotation of plastics and enhanced gravity separation in multi-gravity separator. The dry purification circuit consisted of electrodynamic and electrostatic separation. Substantial enrichment of the ground powder with good recovery of metals was achieved using the flowsheet. The starting PCB powder, ground to −0.5mm size, had about 23% total metal. Complete liberation of metals from plastics was achieved below 100μm size. Metal values were found to be more abundant in the coarser sizes.

Suggested Citation

  • Das, A. & Vidyadhar, A. & Mehrotra, S.P., 2009. "A novel flowsheet for the recovery of metal values from waste printed circuit boards," Resources, Conservation & Recycling, Elsevier, vol. 53(8), pages 464-469.
    • Handle: RePEc:eee:recore:v:53:y:2009:i:8:p:464-469
    DOI: 10.1016/j.resconrec.2009.03.008
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    References listed on IDEAS

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    1. Kang, Hai-Yong & Schoenung, Julie M., 2005. "Electronic waste recycling: A review of U.S. infrastructure and technology options," Resources, Conservation & Recycling, Elsevier, vol. 45(4), pages 368-400.
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    2. Kumar, Amit & Holuszko, Maria & Espinosa, Denise Crocce Romano, 2017. "E-waste: An overview on generation, collection, legislation and recycling practices," Resources, Conservation & Recycling, Elsevier, vol. 122(C), pages 32-42.
    3. Bonnin, Marie & Azzaro-Pantel, Catherine & Domenech, Serge & Villeneuve, Jacques, 2015. "Multicriteria optimization of copper scrap management strategy," Resources, Conservation & Recycling, Elsevier, vol. 99(C), pages 48-62.
    4. Saurabh P. Tembhare & Bharat A. Bhanvase & Divya P. Barai & Sanjay J. Dhoble, 2022. "E-waste recycling practices: a review on environmental concerns, remediation and technological developments with a focus on printed circuit boards," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 24(7), pages 8965-9047, July.

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