Zhengzhou Zhengyang Machinery Equipment Co., Ltd

Crushing and sorting process of circuit board recycling equipment


At present, most of the domestic waste circuit boards are treated with primitive methods. For the rare or precious metal parts of the circuit boards, incineration or strong acid dissolution is used, that is, the precious metals are left after removing other components. This process will produce a lot of "three wastes". Because there are no environmental protection measures, it is quite harmful to the environment and laborers, and these resources are not fully and effectively used. E-waste is a precious resource. Strengthening the research and application of metal recycling technology for e-waste is of great significance both from an economic and environmental point of view. Due to the complex and diverse characteristics of e-waste, it is difficult to recover the metal in it with any technology alone. The future development trend of e-waste processing technology should be: industrialization of processing forms, greater recycling of resources, and scientific processing technology . In summary, researching the recycling of discarded PCBs, Green Jie environmental protection circuit board recycling equipment can not only protect the environment, prevent pollution, but also facilitate the recycling of resources, save a lot of energy, and promote the sustainable development of the economy and society.

Circuit Board Recycling Machine

Green Jie Environmental Protection's new circuit board recycling equipment is a new equipment for the physical recycling of waste circuit boards. Aiming at the current situation of domestic disposal of used circuit boards, it improves the metal recovery rate and reduces the burden of environmental pollution. Green Jie environmental protection has developed the recycling of used circuit boards. The comprehensive treatment technology of metal green recycling adopts green and efficient crushing and sorting process to physically separate metals and non-metals in waste circuit boards to prevent environmental pollution caused by incineration and acid hydrolysis. Using all physical methods, optimizing the combined process of crushing-re-selection-electrical separation to realize efficient circuit board crushing and effective separation of metals and non-metals. The combination of coarse crushing, medium crushing, grinding and screening and classification processes can greatly improve the grinder The efficiency is reduced, the load of the grinder is reduced, and the effect of energy saving is achieved. At the same time, the life of key components of the crusher and grinder can be extended. Re-separation of metal and non-metal in metal powder containing impurities such as organic matter by the combined process of gravity separation and electrical separation, greatly reducing the organic content in the metal powder.

With the acceleration of the update speed of electronic products, the number of discarded printed circuit boards (PCB), the main component of electronic waste, is also increasing. The environmental pollution caused by waste PCBs has also aroused the attention of various countries. Waste PCB contains heavy metals such as lead, mercury, and hexavalent chromium, including nearly 20 kinds of non-ferrous metals and rare metals. It has high recycling value and economic value, and it is a real mine waiting to be mined. The physical method of Lvjie environmental protection circuit board recycling equipment is to use mechanical means and the difference of PCB physical properties to achieve recycling. The green and efficient crushing and sorting process of waste circuit boards physically separates metals and non-metals in waste circuit boards. The purpose is to dissociate the metal in the waste circuit board from the organic matter as much as possible to improve the separation efficiency. The study found that when the metal is broken at 0.6 mm, the metal can basically reach 100% dissociation.

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