폐PCB에 장착된 전기/전자부품의 분리 및 특성
Disassembly of the Mounted Electric/Electronic Components on Wasted Printed Circuit Board and their Characterizations
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참고문헌
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초록
폐인쇄회로기판에 장착되어 있는 전기/전자 부품의 재사용/재활용 가능성을 향상시키기 위해 부품분리 실험 및 분리된 부품의 특성평가를 실시하였다. 부품 분리실험은 연삭방법을 채용한 부품분리기를 자체개발하여 수행하였으며, 연마석의 높이(0.5, 1.5 mm), 회전속도(2500, 5500 rpm), WPCB 이동속도(1~5 cm/sec), 연삭횟수 등을 변화시키면서 부품분리 효율을 평가하고 최적 처리조건을 도출하였다. 부품분리 효율은 장착된 부품의 전체무게에 대한 분리된 부품의 무게비로 평가하였으며, 각 처리조건에서 3개의 WPCB에 대해 평균값으로 계산하였다. 연마석 높이 1.5 mm, 회전속도 5500 rpm, 이동속도 1 cm/s 처리조건으로 3 회 처리 시, 95.2 %의 부품분리가 가능하였다. 처리 후 WPCB는, 부품, 부품이 탈거된 WPCB, 연삭분말로 분리되었으며, WPCB의 금속성분 함량은 17.9 wt%였으며, 이 중 48.4 % 금속성분(8.7 wt%)은 부품에 함유되어 있음을 확인하였다. WPCB에서 총 20개 금속원소가 검출되었으며, 이 중 Cu, Al, Fe, Pb가 전체 금속의 90.7 %를 차지하였고, Pb, Ag는 연삭분말에 농축되어 분포하였다.
Abstract
Disassembly of the mounted electric/electronic components (EECs) on WPCBs and their characterizations were surveyed for enhancing the reusing/recycling feasibility of WPCBs. Disassembling treatment was carried out by using the self-designed apparatus installed grinding attachment. The weight ratio of the detached EECs was used as the efficiency of disassembly, which was the average value of the result treated with 3 WPCBs in each condition. 95.2 wt% of the disassembling efficiency could be accomplished ultimately by 3 repetitive treatments at a grinder height of 1.5 mm, a grinder speed of 5500 rpm and the WPCB moving speed of 1 cm/s. After this treatment, WPCB could be categorized to three divisions such as disassembled EECs, dismantled board and abrasion powders. Total content of metal in WPCB was surveyed to 17.9 wt%, and 48.4 % of them (8.7wt%) was contained in the division of EECs. 20 metal elements could be detected in WPCBs. Moreover, 4 major elements (Cu, Al, Fe, Pb Cu) in total metal content were comprised at 90.7 % and Pb/Ag existed mainly in abrasion powders.
참고문헌 (24)
- Cui, J.R, "Mechanical recycling of waste electric and electronic equipment: a review", Journal of Hazardous Materials, 99, pp.243~263 (2003)
- Cui, J.R, "Characterization of shredded television scrap and implications materials recovery", Waste Management, 27, pp.415~424 (2007)
- Cui, J.R, "Metallurgical recovery of metals from electronic waste : A review", Journal of Hazardous Materials, 158, pp.228~256 (2008)
- Das, A, "A noble flowsheet for the recovery of metal value from waste printed circuit boards", Resources, 53, pp.464~469 (2009), Conservation and recycling
- Duan, "Recovery of metals from waste printed circuit boards by mechanical method using a water medium", Journal of Hazardous Materials, 166, pp.478~482 (2009)
- Duan, H.b, "Examining the technology acceptance for dismantling ofwaste printed circuit boards in light of recycling andenvironmental concerns", Journal of EnvironmentalManagement, 92, pp.392~399 (2011)
- Eswaraiah, C, "Classification of metals and plastics from printed circuit board(PCB) using air classifier", Chemical Engineering and Processing, 47, pp.565~576 (2008)
- Guo, "Liberation characteristic and physical separation of printed circuit board(PCB)", Waste Management, 31, pp.161~2166 (2011)
- Huang, K, "Recycling of waste printed circuit boards : review of current technologies and treatment status in china", Journal of Hazardous Materials, 164, pp.399~408 (2009)
- Jha, "Leaching of lead from solder material of waste printed circuit boards (PCBs)", Hydrometallurgy, 121, pp.28~34 (2012)
- Khetriwaal, D.S, "Producer responsibility for e-waste management : keyissues for consideration-learning from swiss experience", Journal of Environmental Management, 90, pp.153~165 (2009)
- Kim, "Leaching kinetics of copper from waste circuit boards by electro-generated chlorine in HCl solution", Hydrometallurgy, 107, pp.124~132 (2011)
- Kinoshita, "Metal recovery from non-mounted wiring boards via hydrometallurgical processing", Hydrometallurgy, 69, pp.73~79 (2003)
- Lee, C.H, "Management of scrap computer recycling in Taiwan", Journal of Hazardous Materials, 73, pp.209~220 (2000)
- 李在天, "衝擊型 粉碎機에 의한 廢프린트配線基版(PCBs) 중 金屬成分의 粉碎 特性", 자원리싸이클링, 11(2), pp.28~35 (2002), 한국자원리싸이클링학회
- Lee, J.C, "Present status of the recycling of waste electrical and electronic equipment in Korea", Resources, 50, pp.380~397 (2007), Conservation and recycling
- Li, "Status quo of e-waste management in mainland China", Journal of Mater cycles Waste Management, 8(1), pp.13~20 (2006)
- Li, "Recycling technology for recovering resources and products from waste printed circuit boards", Environmental Science and Technology, 41(1), pp.1995~2000 (2007)
- Long, "Using vacuum pyrolysis and mechanical processing for recycling waste printed circuit boards", Journal of Hazardous Materials, 177, pp.626~632 (2010)
- Wu, G.Q, "Recycling of waste printed circuit boards", Circuit world, 36(4), pp.35~39 (2010)
- Wu, J, "Electrostatics separation for multi-size granule of crushed printed circuit board waste using two-roll separation", Journal of Hazardous Materials, 159, pp.230~234 (2008)
- Yang, H.Y, "Leaching copper from shredded particles of waste printed circuit boards", Journal of Hazardous Materials, 187, pp.393~400 (2011)
- 유경근, "Enrichment of the metallic components from waste printed circuit boards by a mechanical separation process using a stamp mill", WASTE MANAGEMENT, 29(3), pp.1132~1137, PERGAMON-ELSEVIER SCIENCE LTD
- Zuou, Y, "A new technology for recycling materials from waste printed circuit boards", Journal of Hazardous Materials, 175, pp.823~828 (2010)