Vinod Kumar, Jae c Lee, Jinki Jeong, Manis K Jha, Byung s Kim, and Ratnakar Singh (2015)
Recycling of printed circuit boards (PCBs) to generate enriched rare metal concentrate
Journal of Industrial and Engineering Chemistry, 21:805-813.
An eco-friendly process for recycling obsolete PCBs to get enriched rare-metal concentrate using physical separation technique is discussed. Metal concentration in digital video disc (DVD) PCBs is 43. wt.% whereas in vacuum cleaner (VC) PCBs 30. wt.% with rare metal of 2.8%. Concentrate grade of 88% total metals including 5.85% rare metals in-case of DVD-PCBs while 90% of total metals including 2.81% rare metals in-case of VC-PCBs was achieved by froth flotation. While 75% total metals including 9.41% rare metals for DVD-PCBs and 65% total metals including 5.10% rare metals for VC-PCBs was obtained by pneumatic separation.
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