1. Step One: Feeding 

Raw materials are loaded into the feed hopper of the impact crusher. These materials can range from rocks, limestone, and river pebbles to even construction waste—essentially, any material you need to break down into smaller pieces or process into sand can be used.

It is crucial *not* to feed in oversized materials (we will specify the maximum size limits our machines can handle shortly); doing so can cause the machine to jam, thereby reducing operational efficiency. Most of our clients utilize small conveyors or feeders to ensure a steady, uniform feed, which helps guarantee smooth machine operation.

2. Rotor Rotation (The Machine’s “Engine”)

Inside the impact crusher lies a massive, heavy rotor (somewhat resembling giant fan blades) that spins at extremely high speeds—reaching rotational speeds of 1,000 to 1,500 revolutions per minute (RPM). Once the machine is switched on, this rotor takes just a few short minutes to accelerate to its full rated speed.

This rotor is the very core of the impact crusher. It is responsible for generating the “impact” force we mentioned earlier. Chunlei impact crushers are equipped with reinforced rotors, ensuring they resist wear and tear effectively, even when crushing exceptionally hard materials.

3. Impact Plates

Surrounding the rotor are sturdy, durable impact plates (which are securely fixed to the machine’s frame). These impact plates are robust enough to withstand violent, high-force collisions.

As the rotor spins at high velocity, it scoops up the material from the feed hopper and hurls it with tremendous force against the impact plates. Upon impact, the material instantly shatters into smaller particles and is then ricocheted back toward the rotor zone. This repetitive cycle of impact and rebound continues until the material particles become fine enough to pass smoothly through the discharge gap located at the bottom of the machine.

4. Adjusting Particle Size

Looking for finer sand? Or perhaps larger-sized aggregates suitable for construction projects? No problem—it is all entirely achievable. Most impact crushers (including the equipment we manufacture) are equipped with an adjustment mechanism that allows you to modify the gap between the impact plate and the rotor.

By narrowing the gap, you can produce extremely fine sand; conversely, widening the gap yields larger-grained, coarser-textured material. The operation is remarkably simple—requiring no tools and involving no cumbersome setup procedures. You can effortlessly complete the adjustment simply by turning the adjustment handle or operating the hydraulic system.

5. Collecting the Finished Product

Once the material has been crushed to your desired particle size, it falls through the gap onto a conveyor belt or into a collection bin located beneath. At this point, the entire process is complete—you have successfully obtained your finished sand, aggregates, or shaped stone, ready for immediate use or commercial sale.