Proceedings of the Korean Institute of Resources Recycling Conference (한국자원리싸이클링학회:학술대회논문집)
- 2005.05a
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- Pages.23-27
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- 2005
Electrogenerated Chlorine Leaching of Electronic Scrap
전해생성된 염소를 이용한 폐전자 기판의 침출 연구
- Kim, Min-Seuk (Korea Institute of Geoscience and Mineral Resources Minerals & Materials Processing Division) ;
- Lee, Jae-Chun (Korea Institute of Geoscience and Mineral Resources Minerals & Materials Processing Division) ;
- Jeong, Jin-Ki (Korea Institute of Geoscience and Mineral Resources Minerals & Materials Processing Division)
- Published : 2005.05.19
Abstract
Electrogenerated chlorine leaching of used printed circuit board was Investigated in hydrochloric acid solution. The used printed circuit board contained about 45% of metal component, in which copper was about 84%. The leaching rate was greatly effected by current density and agitation. Utilization of electrogenerated chlorine was enhanced by increasing agitation and lowering current density. Leaching of copper was suppressed, while the minor metal elements, such as aluminum, lead, and tin, dominated the leaching at the initial stage.
본 연구에서는 유가금속 성분이 약 45%인 폐인쇄회로기판을 사용하여 염산 용액에서 전해생성된 염소에 의한 침출 거동을 조사하였다. 폐인쇄회로기판내 유가금속 중 구리는 약 84%에 해당하였다. 전해생성된 염소에 의한 침출거동에 미치는 변수들의 영향을 조사한 결과 염소의 전핸생성 및 교반에 의한 용액으로의 용해 및 혼입 단계가 침출율에 가장 큰 영향을 주었다. 염산농도 1M, 전류밀도