With the rapid development of electronic products, the number of printed circuit board (PCB), which is the main component of electronic waste, has become more and more huge.The environmental pollution caused by waste PCB has also attracted the attention of many countries.Waste PCB contains heavy metals such as lead, mercury and hexavalent chromium, as well as toxic chemicals such as polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) as flame retardants. These substances will cause great pollution to groundwater and soil in the natural environment. It brings great harm to people's life and physical and mental health.Waste PCB contains nearly 20 kinds of non-ferrous metals and rare metals, with high recovery value and economic value. Therefore, the recycling of electronic waste is becoming a hot topic all over the world.
On the basis of absorbing the advanced technology at home and abroad, our company independently developed the high-voltage electrostatic separator , which is the most advanced separation equipment in the current circuit board metal separation equipment. For all kinds of waste circuit boards, printed circuit boards and processing waste, frame materials, scraps and other raw materials to have a professional and reasonable recycling process. Relying on our metal crusher and high-voltage electrostatic separator and other advanced equipment, The recovery rate of metal is greatly improved, and the purity of recovered metal is up to 98%.
The waste circuit board raw materials are transported to the metal shredder through belt conveyor for primary grinding, and the crushed material are then transported through belt conveyor to the circuit board fine crusher for grinding, and the crushed material are transported by the fans to the analyzer for sorting. A large amount of epoxy resin powder and a small amount of metal powder were separated and stored uniformly after being collected by cyclone feeder and dust collector. The remaining epoxy resin and metal particles are sifted through a bucket elevator to a straight screen. Materials above 1.5mm are returned to fine crusher to be broken again . Materials less than 1.5mm are separated by high voltage electrostatic separator. Make metal powder and nonmetal powder completely separate.
Introduction of advantages
1.Adopted a new technology of mechanical crushing and high voltage electrostatic separation in the circuit board grinder. After disassembling, crushing and dissociating, the separation of metallic and nonmetallic materials is carried out, and the purity is high. After disassembling, crushing and dissociating, the separation of metallic and nonmetallic materials is carried out, and the purity is high.
2.The key technology is to combine all kinds of special crusher and disintegrating equipment of waste circuit board organically, and to achieve a large energy-saving effect in the production process, and to achieve a high metal separation rate.
3.The unit energy consumption of each ton of waste circuit board is only about 3 / 5 of that of the domestic similar products, and the maximum processing capacity of a set of equipment is up to 1 ton per hour.
4.The price of circuit board recycling equipment is only 1 / 5-1 / 3 of the same equipment at home and abroad, and the recovery rate of copper is 3%-5% higher than similar manufacturers.
5.Comprehensive performance is good, have special effect for computer board, TV set board and other line control board. The recycling of all kinds of circuit boards which contain capacitors is also suitable.
6.The circuit board recycling processing line is the upgrade product of the wind selection type, which consumes less electricity than the wind selection type product, and has no noise, less manual work, high automation program, high efficiency, and covers a smaller area. It is the most ideal production line for waste circuit board recycling, waste circuit board recycling currently.
7. Less labor, no pollution, no noise,flexible placement;
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