Physical Separation and Leaching for Waste Printer PCBs Recycling

폐프린터 기판 재활용을 위한 물리적 전처리 및 침출

  • 정진기 (한국지질자원연구원 자원활용.소재 연구부) ;
  • 이재천 (한국지질자원연구원 자원활용.소재 연구부) ;
  • 김민석 (한국지질자원연구원 자원활용.소재 연구부) ;
  • 김은영 (과학기술연합대학원 대학교) ;
  • 김상배 (한국지질자원연구원 자원활용.소재 연구부)
  • Published : 2005.10.14


Printed circuit boards (PCBs) of the printer are composed of various organic and inorganic compounds as well as metals and alloys. This study was conducted to recover valuable metals from used PCBS by physical separation and leaching. The PCBs was crushed, sieved, classified by zig zag classifier and magnetic constituents were removed by the magnetic separation. The non-magnetic constituents of sizes between 1.2 and 0.6 mm especially containing high quantity of Cu (e.g. 83% on metal base and 31% on total base) were used for the leaching experiment. The effect of the nature and concentration of acids and reaction temperature were investigated. The Cu leaching rate to 98.5% in 2M nitric acid, pulp density 100g/L, $90^{\circ}C$, 300rpm, 1hr leaching.