BTMA-What are differences between jaw crusher and impact crusher?

In recent years, the demand for crushers has continued to increase, and there are more and more classifications. Today we will analyze the differences between jaw crusher and impact crusher:


1、The application of the crushing section is different

Jaw crushers are generally used for primary crushing, which can directly crush large-grained materials into mineral particle sizes that enter secondary crushing equipment.


Different from the secondary crushing, the impact crusher is mainly used as the secondary crushing equipment for the crushing production line as the jaw crusher. “Alternative crushing equipment” is the processed stone of the crusher.


2、Broken materials are different


The jaw crusher is used for one-time processing of various ores with a compressive strength not higher than 320MPa, and for crushing medium-sized minerals. Minerals are crushed in a wide range of hardness; while impact crushers are suitable for marble, granite, etc. Hard materials are not suitable because the wear and tear of wearing parts is too large to be suitable.


3、The feed size is different


There are two series of jaw crushers, coarse crushing and fine crushing. The product specifications are complete. The feeding particle size is 125mm~750mm, which is the first choice for primary crushing. Impact crushers can crush feed sizes up to 500mm and are pressure resistant. All kinds of coarse, medium and fine materials whose strength does not exceed 50MPa.


4、The working principle is different


When the jaw crusher is working, the motor drives the belt and the pulley, and the movable jaw moves up and down through the eccentric shaft. When the movable jaw rises, the angle between the torsion plate and the movable jaw becomes larger, so that the movable jaw is pushed towards the fixed jaw, and at the same time. The material is crushed or crushed to achieve the purpose of crushing; when the movable jaw moves down, the angle between the toggle plate and the movable jaw becomes smaller, and the movable jaw leaves the fixed jaw under the action of the pull rod spring.

At this point, the crushed material has been taken out from the fixed jaw. Discharge from the bottom of the crushing cavity.



Different from the principle of jaw crushing, when the impact crusher is working, driven by the motor, the rotor rotates at a high speed. After the material enters the impact area of the blower, it collides with the blower on the rotor and breaks, and then is thrown to the counterattack device again. Crush, then rebound to break again from the counter liner to the hammer action zone. This process is repeated. The material enters the first chamber, the second chamber, the third chamber, and the counterattack chamber in order from large to small, and is crushed repeatedly until the material is crushed to the required particle size and discharged from the discharge port.


To sum up, although there are many differences between jaw crushers and impact crushers, they also represent their different operational features.

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