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《Environmental Science and Management》 2008-08
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Study on Processing Old Computer Circuit Boards and Prospects

Li Yuwen1,Sun Weiguang1,Xing Jia2(1.Northeast Forestry University,Harbin 150040,China; 2.Heilongjiang Scientific Research Insitute of Environment Protection,Harbin 150056,China)  
With the increase of waste electrical and electronic equipment(WEEE) in our country,the number of waste printed circuit board(PCB) is increasing rapidly in recent years.Printed circuit board contains lots of noble metals,Pb,Cd,Hg,Cr,PVC,flame-retardant,also including large amounts heavy metal and other toxic substances.These substances are discharges,and also are resources.In this article,the value of recovering waste PCB and the main technique and prospects of processing printed circuit boards scrap are summarized,and the main craft is introduced.There are three kinds of techniques: heat treatment,chemistry processing and mechanical treatment.Adopting of these techniques and processing to deal with the printed circuit boards scrap,heavy metals pollution can be reduced,and also a great deal of precious metal can be reclaimed.
【CateGory Index】: X76
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