7. The air separation unit will conduct air separation classification of the materials after the second iron removal, and separate the light materials. The separated metal powder and heavy materials will be transported to the next process;
8. The high-voltage electrostatic separation unit separates resin fiber from metal powder and heavy material through secondary separation to obtain the copper containing metal rich collective with purity of 99.5%;
9. Dust waste gas disposal unit is used to deal with flue gas and dust in the process of dismantling, crushing and sorting;
10. The central control unit realizes interlocking control over the whole system. Waste PCB board includes dismantling unit, crushing unit, primary air separation unit, iron removal unit, grinding unit, fine iron removal unit, air separation unit, high voltage electrostatic separation unit, dust waste gas disposal unit, central control unit; After the circuit board is disassembled and crushed, after primary air separation, primary iron removal, grinding, secondary iron removal, air separation separation, high voltage electrostatic separation and other processes, the purity is 99.5% copper containing metal rich group. The circuit board recycling equipment can be used to recycle and process the available resources in the process of PCB board waste material, large-scale processing and recycling, to meet the requirements of environmental protection and data recycling!
The scheme of environmental protection waste electronic waste PCB board shredding and sorting system is characterized by the following aspects: dismantling unit, crushing unit, primary air separation unit, iron removal unit, grinding unit, fine iron removal unit, air separation unit, high-voltage electrostatic separation unit, dust waste gas disposal unit, and central control unit. The crushing sorting process is as follows:
1. In the dismantling unit, remove the electronic components containing precious metals and those with a height greater than 30mm from the circuit board;
2. In the crushing unit, crush the disassembled circuit board to a particle size less than 2mm by two-stage crushing
3. The primary air separation unit will separate the non-metallic particles from the broken materials;
4. Iron removal unit: remove iron once for the materials after primary air cleaning;
5. The grinding unit grinds and pulverizes the material after removing iron once to particles smaller than or equal to 0.8mm in size;
6. Fine iron removal unit: remove the magnetic material from the ground material by removing the magnetic material;