Even though waste, PCB is also valuable.

With development of the times and technology, the speed of electronic product replacement is getting faster and faster, but the life cycle is getting shorter and shorter. Many products are discarded without damage, resulting in great environmental pollution. But as we all know, even though scrapped, if can be effectively processed, the waste electronic products also play a very important role.

The same is true for PCB. Its metal grade is equivalent to dozens of times the metal grade in ordinary minerals, the content of metal is as high as 10% to 60%, while the rich metal content in nature is only 3% to 5%. As an important component in waste electronic products, it contains various heavy metals and harmful substances such as lead, cadmium and polyvinyl chloride plastics. On the other hand, it contains various common metals and rare metals such as gold, silver and copper. If not properly disposed of, the carcinogens such as brominated flame retardants  will cause serious pollution to the environment and harm to human health. So how  to convert waste PCB to renewable resource?

The surface of the PCB is coated with a protective metal. So the first step in the recycling process is to remove the paint, which can be dissolved by heating with sodium hydroxide, corrosion inhibitor or something else. After removed, it must be crushed with ultra-low temperature freeze crushing technology, which mainly cool down the tough material, and brace for crush, completely dissociate the metal from the non-metal. The pulverized material needs to be sorted according to the characteristics of each component,usually with the screening by 'dry and wet'. After screened, the particle size distribution of non-metallic powder will be more suitable for various fillers. After the surface activation modification of non-metallic powders, it has been successfully applied to the production of wood-plastic profiles, outdoor landscape materials, sewer pipes, logistics pallets and so on.

It can be seen that even though waste, PCB is also valuable.---The life of PCB