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Working of Impact Crusher

Impact crusher is widely used in construction, metallurgy, mining and other industries. In crushing plants, impact crusher is generally used as secondary crushing equipment for crushing medium hard or soft materials. Here we introduce the main factors affect working of impact crusher efficiency.

Factors Affect working of impact crusher Efficiency

Rotation Speed Of Rotor

The research about rotation speed of rotor can guide customers choose proper rotation speed when impact crusher crushes raw materials with different sizes and different properties in order to avoid over-crushing of materials. At the same time, it can reduce the energy consumption of impact crusher. According to statistics, the faster the rotation speed of rotor, the stronger the impact force produced when blow bar contacts with raw materials. With the increasing of rotation speed of rotor and the impact force produced when raw materials impact the impact plate, the impact crushing effect get better and the damage degree of raw materials also get higher. Therefore, in the further shearing crushing process, the interaction force between blow bar and raw materials, raw materials and impact plate is relatively small.

Rotary Inertia Of Rotor

Generally, raw materials can be crushed by a fixed type impact crusher are also fixed, which, to a large extent, is related with the rotary inertia of the rotor equipped in the impact crusher. When the rotation speeds of rotors are the same, rotors with different rotary inertias provide different crushing force, which directly affect the crushing efficiency of impact crusher. The higher of rotary inertia of rotor, the higher the impact force between blow bar and raw materials, raw materials and impact plate.

Angle Of Impact Plate

Angle of impact plate in impact crusher has relatively great influence on the crushing force produced by the impacting of raw materials and impact plate. Generally, forces perpendicular to the contact surface are effective crushing force which can crush the raw materials. Ideally, every time raw materials impact the impact plate vertically. In this case, the effective crushing force is the highest.

Conclusion

The faster the rotation speed of rotor, the higher the rotary inertia, the stronger the impact force produced by the contact of blow bar and raw materials, raw materials and impact plate, the better the crushing efficiency. Reducing the impact plate angle will have better effect on the shearing crushing, but it is difficult for raw materials to have impact crushing. Increasing the impact plate angle will increase the impact numbers, and improve the working of impact crusher crushing effect, but it is difficult for raw materials to have shearing crushing.

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