New technology method for separating waste PCBs by circuit board recycling equipment
Release Time：2022-12-23 Source：Lithium battery recycling equipment Share：
As a basic component of the electronics industry, printed circuit boards are widely used in various electronic devices. As a large number of waste electronic appliances continue to be generated, waste printed circuit boards are also growing significantly. The recovery value of metals in waste PCBs is of great importance for their resource recovery and disposal. Dry circuit board recycling equipment to separate waste printed wiring boards of new technology methods are.
1, circuit board recycling equipment environmentally friendly method is to use the "crushing method", the mixed metal powder will be obtained after the wind, magnetic separation, aluminum, copper, solder and epoxy resin powder mixture left, and then recycling. This non-polluting physical recycling method has been applied in practice.
2, circuit board recycling equipment, including disassembly, crushing, sorting and other processes, including environmentally friendly and economically feasible mechanical and physical collection process, to achieve the separation of metal and non-metallic materials in the circuit board and recycling, separation process purely physical methods: in the entire separation process without adding any chemicals, completely using physical methods for separation.
3, the role of high-speed hammer head, when the crusher discharge size of 20mm, nearly 80% of the metal in the circuit board is concentrated in the 0.125-1.0mm particle size materials, glass fiber reinforced resin as the main component of the non-metallic materials are concentrated in the particles below 0.50 mm. The degree of dissociation of metals increases with the decrease of particle size, and the main metals are basically dissociated below 0.80 mm particle size. The circuit board is selectively broken during the impact crushing process, which facilitates the subsequent physical separation.
Circuit board recycling equipment recovery of waste printed circuit boards of new technology methods, the methods used for technical innovation; increase the investment in new methods and technologies; third is to pay attention to the recovery of non-metallic parts of waste printed circuit boards, raw materials through shredding, coarse breakage, crushing, airflow sorting, vibration gravity separation sorting, electrostatic sorting and other physical environmental treatment processes, can be recovered to copper-based precious metal mixture The dust and waste gas generated during the production process are collected in an orderly manner and unified for dust removal and waste gas purification treatment, which are discharged into the air after reaching the environmental protection standards.