An Impact Crusher is a powerful machine designed to break down materials like rocks, concrete, and recycled asphalt by using the principle of rapid impact. Unlike crushers that rely on compression between two surfaces, an impact crusher accelerates the feed material into a series of hammers or blow bars mounted on a rapidly rotating rotor. The material is then hurled against a solid impact wall or apron, where it shatters upon collision. The process is dynamic and efficient, making it suitable for both primary and secondary crushing stages in various material processing operations.
Impact Crusher Types
Working Principle
The impact crusher uses the high-speed rotation of the hammer on the rotor to hit the material onto the impact plate, and uses the impact force to crush the material.
1 High-Speed Rotation
Electric motor-driven rotor spins at high velocity, creating powerful kinetic energy for crushing through sheer impact force.
2 Primary Impact Crushing
Materials first collide with high-speed hammer heads on the rotor, undergoing initial fragmentation into smaller pieces.
3 Counterattack Crushing
Particles are thrown against impact plates for secondary crushing, then rebound for repeated hammer strikes in multi-stage chambers.
4 Adjustable Output
Final particle size controlled by adjusting gap between rotor and impact frame, with three crushing chambers for progressive refinement.
Key Features
Impact crushers are distinguished by several key features that contribute to their efficiency and versatility. One of the most significant features is the ability to produce a well-graded, cubical end product. The high-speed impact action naturally tends to break materials into pieces with fewer elongated or flaky particles compared to other crushing methods. This cubical shape is crucial for applications in concrete and asphalt production, as it improves the material's compaction and binding properties. Furthermore, many impact crushers are equipped with a large feed opening and a robust, monolithic rotor design, enabling them to handle sizable feed material and ensuring durability under demanding conditions.
Another defining feature is the adjustable output setting system. Through hydraulic or mechanical adjustment of the aprons or grinding paths, the distance between the rotor and the impact curtains can be modified. This allows for precise control over the product size distribution without stopping the machine, enhancing operational flexibility. Additionally, modern impact crushers often incorporate advanced safety and maintenance features. These may include hydraulic opening mechanisms for easy access to the interior for wear part replacement, monitoring systems to track rotor speed and bearing temperature, and overload protection devices that prevent damage from uncrushable objects entering the chamber.
Applications of Impact
Impact crushers find widespread use in the aggregate production and recycling industries. In quarrying and mining, they are frequently employed for processing limestone, sandstone, and other medium-hard rocks to produce aggregates for construction purposes such as road base, concrete aggregate, and railroad ballast. Their ability to create a cubical product makes them ideal for producing high-quality sand and chippings. In these primary and secondary crushing roles, impact crushers offer a high reduction ratio, meaning they can take relatively large pieces of rock and reduce them to much smaller sizes in a single pass through the machine, streamlining the overall crushing circuit.
Beyond natural stone processing, impact crushers are indispensable in the construction and demolition (C&D) waste recycling sector. They excel at crushing concrete, bricks, and asphalt, transforming demolition debris into valuable recycled aggregates that can be reused in new construction projects. This application not only reduces landfill waste but also conserves natural resources. Their design, which often includes features to handle rebar and other metallic contaminants, makes them robust enough for tough recycling duties. They are also used in industrial settings for size reduction of materials like coal, chemicals, and certain minerals where impact crushing is an effective method.
Specifications
PF Impact Crusher
| Model | Specification | Feed Opening Size (mm) | Feeding Size (mm) | Capacity (t/h) | Motor Power (kw) | Overall Dimension(mm) |
|---|---|---|---|---|---|---|
| PF-1007 | ⌀1000 x 700 | 400 x 730 | ≤250 | 15 - 60 | 45 | 2319 x 1654 x 2558 |
| PF-1010 | ⌀1000 x 1050 | 400 x 1080 | ≤300 | 50 - 90 | 55 | 2319 x 2001 x 2558 |
| PF-1210 | ⌀1250 x 1050 | 450 x 1060 | ≤300 | 80 - 150 | 90 | 2585 x 2053 x 2809 |
| PFV-1214 | ⌀1250 x 1400 | 450 x 1440 | ≤300 | 100 - 200 | 132 | 2582 x 2403 x 2809 |
| PFV-1315 | ⌀1320 x 1500 | 550 x 1530 | ≤350 | 130 - 280 | 185 | 2930 x 2761 x 3053 |
| PFV-1320 | ⌀1320 x 2000 | 610 x 1900 | ≤500 | 180 - 400 | 220 | 3224 x 3175 x 2706 |
| PFV-1520 | ⌀1500 x 2000 | 830 x 2040 | ≤700 | 300 - 550 | (220 - 250)x2 | 3959 x 3564 x 3330 |
| PFV-1820 | ⌀1800 x 2000 | 1260 x 2040 | ≤800 | 600 - 800 | 630 - 710 | 4400 x 3868 x 4009 |
CS5X Impact Crusher
| Model | Specification | Feeder Opening Size (mm) | Feeding Size (mm) | Processing Capacity(t/h) | Motor Power(kw) | Overall Dimension (mm) |
|---|---|---|---|---|---|---|
| CS5X1315 | 1300×1500 | 1540×930 | ≤600 | 250 - 350 | 250 - 315 | 2880×2755×2560 |
| CS5X1520 | 1500×2000 | 2040×520 | ≤700 | 400 - 600 | 400 - 500 | 2995×2790×3090 |
| CS5X1415 | 1400×1500 | 1540×1320 | ≤900 | 350 - 550 | 250 - 315 | 3390×3475×2790 |
| CS5X1620 | 1600×2000 | 2040×1630 | ≤1100 | 500 - 900 | 400 - 500 | 3485×3605×3720 |
| CS5X2023 | 2000×2300 | 2400×1920 | ≤1300 | 1200 - 2000 | 1000 - 1200 | 4890×4330×4765 |
LF Large Caliber Impact Crusher
| Model | Feeder Opening Size (mm) | Max Input Size (mm) | Processing Capacity (t/h) | Power (kw) | Weight (kg) |
|---|---|---|---|---|---|
| LF150 | 820×980 | ≤500 | 100 - 200 | 90 - 200 | 12000 |
| LF250 | 960×1360 | ≤700 | 200 - 400 | 180 - 250 | 17000 |
| LF350 | 1050×1700 | ≤800 | 300 - 500 | 200 - 400 | 24000 |
| LF450 | 1350×1950 | ≤900 | 350 - 580 | 220 - 440 | 29600 |