Crushing and Separation Processes for PCB Recycling

As global electronic waste generation reaches record highs, the demand for e-waste recycling solutions across various nations has become increasingly urgent. SUNYGROUP’s mechanical crushing and separation production line is setting a new industry benchmark, offering a 100% purely physical, zero-pollution method for recovering high-purity copper and precious metals from discarded Printed Circuit Boards (PCBs).

SUNYGROUP’s PCB Recycling Process

1. Primary Shredding

The PCB recycling process begins with a heavy-duty dual-shaft shredder. Whole circuit boards are sheared into strips approximately 3–5 centimeters in length.

2. Fine Crushing

The shredded strips are then fed into a high-speed hammer mill or a specialized fine crusher. During this stage, the material is pulverized into particles ranging from 1 to 3 millimeters in size.

3. Air Separation

Utilizing the principles of aerodynamics and gravity, the air separator first separates the lightest components. Light components—such as fiberglass dust and lightweight plastic fragments—are lifted by the airflow and collected. Heavy components—metal-rich concentrate particles—proceed to the final refining stage.

4. Electrostatic Separation

By leveraging the differences in electrical conductivity between metals and non-metals, our high-voltage electrostatic separator achieves precise sorting of various materials, ensuring a high recovery rate for metals.

5. Dust Removal System

The entire PCB recycling line operates within a negative-pressure environment. A pulse dust collection system, paired with an activated carbon filtration unit, efficiently captures all fine resin particles and eliminates odors. The result is a clean, dust-free workshop environment.

From primary crushing to the production of high-purity metals, SUNYGROUP offers tailored, turnkey PCB recycling solutions designed to meet your specific requirements. For professional technical support, please contact us at: sales.sunycycle@gmail.com