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Practical Analysis of Physical Separation Technology of Waste Printed Circuit Boards From the Perspective of Process Mineralogy

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DOI: 10.23977/TEE2021.022


KeKe Zhang and JingWei Wang

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JingWei Wang


This paper analyzes and evaluates the practicability of physical separation technology for waste printed circuit boards from the perspective of process mineralogy. After the waste computer circuit boards were crushed and screened twice with a multifunctional crusher and a ball mill, the particle morphology, particle size, dissociation and the influence of temperature and humidity in different particle size range were characterized and measured. On this basis, the influence of the change of each factor on the separation efficiency of physical separation technology was analyzed. Finally, from the perspective of technological progress and environmental protection, some suggestions are put forward for common physical sorting technologies, such as wet crushing or lowtemperature crushing in the crushing stage, and adding vacuum devices and drying devices in the sorting process,I hope this paper can make some contributions to the disposal of waste circuit boards and the development of circular economy.


Waste printed circuit boards, crushing, dissociation granularity, physical sorting

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