Complete E-Waste Recycling Facility
A complete e-waste recycling facility typically comprises three key stages: dismantling, crushing and sorting, and precious metal extraction. It is suitable for e-waste recycling companies, the metal recycling industry, and resource recovery projects.
E-waste Recycling Process Flow
PCB Dismantling Equipment: Enhancing Front-End Processing Efficiency
During e-waste recycling, components such as capacitors, chips, and sockets on the surface of PCBs must first be removed. Traditional manual dismantling is inefficient and prone to damaging components. The PCB Component Dismantling Machine employs a combination of high-temperature heating and mechanical rolling to rapidly melt the solder, followed by automatic separation of components from the substrate via a drum and sieve.
Compared to manual methods, this equipment operates continuously, ensuring more consistent processing efficiency. It demonstrates strong adaptability to various types of PCBs, including computer motherboards, communication boards, and home appliance control boards. Some industrial production lines can process hundreds of kilograms of waste circuit boards per hour, significantly reducing labour costs.
Furthermore, automated dismantling offers an often-overlooked advantage: it reduces the proportion of impurities in the subsequent crushing stage, thereby improving the purity of copper powder and the metal recovery rate. This has a significant impact on the economic viability of the entire recycling system.
PCB Crushing and Sorting System Determines Copper Recovery Quality
After disassembly, PCBs must enter the PCB Crushing and Separation Line for further processing. This system typically comprises a crusher, grinding equipment, an air classification system, electrostatic separation equipment, and a dust collection system.
The core principle involves first crushing the circuit boards into uniform particles, then utilising the differences in density and electrical conductivity between metals and non-metals to effectively separate copper from resin fibres. High-quality equipment typically achieves a copper recovery rate of over 95%, with some advanced sorting systems achieving even higher rates.
The dust collection system is also a critical component of the production line. As the PCB crushing process generates large amounts of fine dust, inadequate dust control not only affects the stable operation of the equipment but may also lead to environmental issues. Consequently, modern e-waste recycling equipment is generally equipped with pulse-jet dust collectors and negative-pressure conveying systems to minimise dust leakage.
For recycling enterprises, the higher the sorting precision, the lower the costs of downstream precious metal refining; this is a key reason why many large-scale recycling plants are placing increasing emphasis on sophisticated sorting equipment.
Precious Metal Refining Equipment: Enhancing the Value of E-Waste
Although the content of gold, silver, and palladium in printed circuit boards is not high, their value far exceeds that of ordinary metals. The role of the Gold Stripping and Refining Unit is to further extract precious metals from high-grade materials.
This system typically comprises process modules such as chemical gold stripping, filtration, precipitation, and refining. Different equipment is configured with varying treatment processes depending on the type of PCB and metal content. Compared to traditional, crude processing methods, modern precious metal refining equipment places greater emphasis on chemical utilisation, waste liquid treatment, and environmental control.
The E-Waste Recycling Facility developed by SUNY GROUP enables integrated processing from PCB dismantling and copper-plastic separation to precious metal extraction, making it particularly suitable for large-scale e-waste recycling projects requiring long-term, stable operation. For enterprises seeking to improve metal recovery rates and resource utilisation, equipment configuration and process stability are often more important than simply pursuing low costs.
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