Explorer les déchiqueteuses de PCB : 5 choses à savoir

This article will focus on the 5 points you need to know about PCB shredders and show you a comprehensive guide to printed circuit board shredders.

What are PCB and PCB shredder machines？

Introduction of PCB

PCBs (Printed Circuit Boards) can be found in virtually all electronic devices. Think of a PCB like a roadmap for electricity in electronic devices. It’s a flat board made of a special material that doesn’t conduct electricity, usually green in color, with thin lines of copper on its surface. These copper lines act as pathways or roads, guiding electricity to different parts of the device, like tiny highways.

On this board, electronic components, such as chips, resistors, and capacitors, are placed and connected to these copper lines. Each component has its specific place, like buildings on a city map, and they’re connected by the copper pathways, allowing them to communicate and work together to make the device function properly.

So, in simple terms, a PCB is like the skeleton and nervous system of an electronic device, providing structure and guiding electricity where it needs to go to make the device work. PCB is mainly composed of epoxy-impregnated fiberglass (FR-4), copper, polyimide or polyester film, and various adhesive materials.

Introduction of PCB shredder

A PCB shredder is a machine designed to break down and destroy printed circuit boards (PCBs). These shredders use various cutting mechanisms, such as rotating blades, to break PCBs into smaller pieces or particles. By shredding PCBs, these machines help recycle valuable materials like metals contained in the boards.

What are the types of circuit board shredders?

Dual Shaft Shredder: A dual shaft PCB shredder has two parallel shafts with interlocking blades or knives that work together to shred PCBs. This design improves PCB shredding efficiency, throughput and the ability to handle harder materials, making it suitable for the processing of high-volume PCBs.

Broyeur à arbre unique: Simple and reliable, this type of PCB shredder has a single rotating shaft equipped with a blade or hammer that effectively shreds PCBs into smaller pieces.

What are the advantages of using PCB shredder?

The advantages of using a PCB shredder include:

Efficient size reduction: PCB shredders break down large quantities of large PCBs into smaller pieces in a short time through high throughput, thereby increasing the surface area available for subsequent processing steps. This not only improves recycling efficiency but also makes it easier to extract valuable materials from PCBs.

Material separation and reuse: Shredding PCBs helps separate the different materials present on the board, such as metals (e.g., copper, gold, silver) and non-metallic materials (e.g., fiberglass, epoxy). Once shredded, these materials can be separated more efficiently and reused using techniques such as magnetic separation, gravity separation and flotation.

Recovery of valuable metals: PCBs contain metals like gold, silver, copper, and palladium, which are valuable and in demand for various electronic applications. Recycling and shredding PCBs allow these metals to be extracted and reused in the production of new electronic components or other industries.

Environmental protection: Using PCB shredders helps ensure the safe disposal or reuse of hazardous materials, thereby preventing environmental pollution. This minimizes the release of harmful substances, such as Cadmium, Lead, Mercury, Hexavalent, Chromium, Polybrominated Biphenyls (PBBs), Polybrominated Diphenyl Ethers (PBDEs), etc. into soil, water and air, thereby protecting ecosystems and human health.

Data security: In addition to material recycling, PCB shredders can help ensure data security by destroying sensitive information stored on electronic devices. Proper shredding of PCBs prevents unauthorized access to confidential data, protecting individuals and organizations from identity theft or data breaches.

How to choose the best circuit board shredder according to your needs?

To choose the best circuit board shredder for your needs, consider the following factors:

Enter the batch size of the material: Assess the type and bulk density of PCB e-waste you will be processing. This will help you determine the right shredder size and power requirements.

Enter the amount of material: Determine the amount of PCB e-waste you need to process and the processing speed so you can choose a shredder with the appropriate throughput rate.

La sécurité : Prioritize safety. Ensure that the road slab shredder meets safety standards and has features such as low-noise operation, active diagnostic control panel, foreign object protection mechanism, emergency stop, etc.

Output specifications: Determining the output specifications required of your shredder, such as particle size, will help you choose a shredder that can achieve the required output.

Integrate with existing systems: Ensure the shredder can integrate seamlessly with your existing PCB recycling system to avoid bottlenecks and unnecessary operating expenses.

Customization: Look for shredders with customizable features, such as different blade types, adjustable speed settings, and the ability to achieve different output sizes based on your waste management needs.

How to integrate PCB shredder to build a complete PCB recycling system?

The design of the PCB recycling system needs to be based on your actual recycling needs. The following is a design plan for a PCB recycling system for your reference.

• Chain Conveyor: Transports waste circuit boards to the PCB pre-shredder.

• PCB Pre Shredder: Breaks down circuit boards into smaller pieces for further processing.

• PCB Fine Shredder: Further crushes material to obtain uniformly sized fragments.

• Airflow Separator: Separates metals and plastics from shredded material using wind force.

• Pulse Dust Collector: Collects dust generated during shredding and separation processes.

• Electrostatic Separator: Separates metals from plastics using high-voltage magnetic field.

With this PCB recycling system along with some other processing, you can finally get trace copper powder and resin powder for further processing or disposal.