E-scrap ( PCB ) processing unit and precious metal recovery plant
With the industrialization and scale of PCB processing and the wide application of electronic products, more and more electronic wastes are generated and manufactured in the production and living activities of human society.
Waste PCBs contain heavy metals such as lead, mercury, and hexavalent chromium. If they are discarded at will, PCBs also contain toxic chemicals such as polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) as flame retardant components. Not only will it pollute the environmental soil and water resources, potentially endanger human health, but also cause wasted resources, which are difficult to recycle. There are nearly 20 kinds of non-ferrous metals and rare metals on scrap PCBs, which have high economic value for recycling.
Therefore, it is particularly important to properly dispose of waste PCB circuit boards.
The electronic waste recycling production line developed by SUNY GROUP uses physical and mechanical means to recycle according to the different physical properties of PCBs. Mechanically crush the PCB to disintegrate and separate its metal and organic matter, improving the separation efficiency. When the crushed particles reach 0.6mm, the metal can basically achieve 100% dissociation, but the selection of the crushing method and the number of stages depends on the subsequent process. According to the differences in their physical properties such as density, particle size, electrical conductivity, magnetic permeability and surface characteristics, the crushed materials can be processed by wind shaker technology, flotation separation technology, cyclone separation technology, floating-sink separation and eddy current separation technology, etc. sorting.
In addition, hydrometallurgy technology is adopted to place PCBs in acid solutions such as nitric acid, sulfuric acid, and aqua regia to remove metals from electronic waste and then recycle them. It is currently the most widely used method for dealing with electronic waste. Compared with pyrometallurgy, hydrometallurgy has the advantages of less waste gas emission, easy treatment of residues after metal extraction, significant economic benefits, and simple process flow.
As a professional manufacturer of e-waste recycling equipment, SUNY GROUP has rich experience and advantages in e-waste dismantling, crushing and sorting, precious metal refining, etc. At present, customers have spread all over the world, such as Europe, America, Asia, Africa and other regions , If you need or want to know more information, please feel free to contact us both.
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