Physical separation route for printed circuit boards


Burat F. , Ozer M.

PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING, vol.54, no.2, pp.554-566, 2018 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 54 Issue: 2
  • Publication Date: 2018
  • Doi Number: 10.5277/ppmp1858
  • Title of Journal : PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
  • Page Numbers: pp.554-566
  • Keywords: physical methods, PCBs, environment, copper, gold, silver, ELECTRONIC SCRAP, MECHANICAL SEPARATION, WASTE, METALS, RECOVERY, CLASSIFICATION, LIBERATION, PLASTICS, COPPER, FORCE

Abstract

Recently, the consumption of electrical and electronic equipment (EEE) has increased with the advanced technology. A wide range of components made of metals, plastics and other substances are contained in EEE. Electronic waste (e-waste) is easily demounted and separated by manually methods; however, printed circuit board (PCB) which is one the most common components of e-waste need to be recycled with economic and environmental technologies. In this paper, employing physical separation methods to ground waste PCB, an eco-friendly, simple and environmental process for separation of valuable metals was designed and proposed. A heavy fraction with 40.8% Cu, 350 ppm Au and 475 ppm Ag content at recovery of 95.4% Cu, 77.7% Au and 65.1% Ag was obtained from a feed assaying 12% Cu, 130 ppm Au and 200 ppm Ag using shaking table separator. Cu grade was increased from 52.4% to 73.9% with the recovery over 92% by dry magnetic separator and copper alloys were separated from the waste matrix with 98% Cu recovery using electrostatic separator.