摘要

Printed circuit board(PCB) and/or Printed wire board (PWB),the base of the electronic industry,is an indispensable part of almost all the electric and electronic equipments (EEEs).Possessing characteristics of resources and perniciousness,waste PCB (WPCB) has received extensive attention in recent years:the recovery of valuable metals contained in WPCB is currently popular in both developed and developing countries,as well as the contamination by the hazardous components to the environment is gaining in concern.Therefore,it is of immediate significance to develop an effcient recycling process to recover the valuable parts of WPCB,especially the precious metals,and safely and properly dispose the harmful ones without sacrificing the economics.Adopting mechanical processing operations such as grinding,sieving,gravity,magnetic or electrostatic separations is a necessary premise to liberate and concentrate valuable metals,and it is more flexible and available than any other recycling processes.

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