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2010 Vol.47, Issue 5 Preview Page
Review on Mechanical Recycling of End-of-Life Electrical and Electronic Equipments for Recovery of Metallic Components

사용 후 전기･전자기기로부터 금속성분의 회수를 위한 기계적 리사이클링에 대한 고찰

Vinod Kumar, 이재천, 정진기, 김병수

Vinod Kumar, Jae-chun Lee1, Jinki Jeong and Byung-Su Kim

31 October 2010. pp. 593-608
PDF Citation
Abstract
Waste electrical and electronics (WEEE) contain metals, glass, and plastics in association with several hazardous materials. WEEE processing usually involves dismantling the discarded equipments followed by sorting and segregation of different components such as glass, large plastics, metal composites and other special parts and reusable units. Segregated scraps are subjected to comminution for effective liberation of constituent metals from the associated nonmetallic materials. Physical beneficiation methods such as gravity, magnetic and electrostatic separation are generally employed to separate light weight fractions, and ferrous and non-ferrous metals. Metallic concentrate can further be subjected to hydrometallurgical treatment for the extraction and recovery of metals. In this review, current status of treatment of waste printed circuit boards (PCBs) and recycling technologies in practice are presented. The problems encountered in the existing recycling processes are particularly discussed. A processing approach involving application of inexpensive and eco-friendly unit operations based on the physical beneficiation for complete recycling and resource utilization of all materials with high efficiency for waste PCBs is highlighted and discussed in brief.
Keywords
End of Life
WEEE
Mechanical Recycling
Physical Beneficiation
Metal Recovery
폐전기･전자기기는 다양한 유해물질과 함께 금속, 유리 그리고 플라스틱 등을 함유하고 있다. 일반적으로 폐전기･전자기기의 처리는 폐기된 제품의 부품들을 분해하고, 유리, 부피가 큰 플라스틱, 금속 복합체 등과 같은 물질 및 특수한 부품과 재사용이 가능한 부품으로 선별하여 분리하는 것을 포함한다. 분리된 스크랩들은 금속성분과 비금속성분의 효율적인 단체분리를 위하여 분쇄된다. 비중, 자력 및 정전선별 등과 같은 물리적 선별이 가벼운 물질, 철 그리고 비철성분들을 분리하기 위하여 적용된다. 금속성분의 농축물로부터 금속의 회수를 위하여 습식제련법으로 처리될 수 있다. 본 고에서는 폐전기･전자기기로 부터 배출되는 폐인쇄회로기판의 현재 처리 상황과 재활용공정 기술을 제시한다. 뿐만 아니라 현재 폐인쇄회로기판의 재활용 공정에서 발생되는 문제점들에 대해서도 논의될 것이다. 끝으로 새롭게 연구되고 있는 환경친화적이면서 고효율적인 폐인쇄회로기판을 자원화하는 공정을 제시하고 설명할 것이다.
키워드
사용 후 전기･전자기기
기계적 재활용
물리적 선별
금속회수
폐전기･전자기기
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society for Geosystem Engineering
  • Journal Title(Ko) :한국지구시스템공학회지
  • Volume : 47
  • No :5
  • Pages :593-608
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