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《Techniques and Equipment for Environmental Pollution Control》 2005-04
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Study on major components and liberation characteristics of discarded printed circuit board

Zhou Cuihong(Department of Environmental Engineering,Beijing Institute of Pectrochemical Technology, Beijing 102617)Lu Maixi(College of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing), Beijing 100083)  
Discarded printed circuit board (PCB) is one of the most important parts of electronic wastes, which contains many valuable components. It can cause serious environmental problems when it is treated unproperly.Crushing printed circuit board into the size less than 5 mm, the major components and liberation characteristics of PCB have been analyzed in detail.The materials in PCB, such as metal, resin and plastic are recyclable. The basic liberation size of metals and nonmetal is 1.2 mm. Liberation degree is 55.51%. Plastic and metal (not Cu, Fe) are main components in material of 0.5~5 mm,resin and copper are main components in material of 0~0.5 mm. The average metal content is 23.80%, the average copper content is 5.78%.
【Fund】: 北京市科委项目(KM200510017004)
【CateGory Index】: X705
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