Jaw Crusher vs Impact Crusher. Jaw and impact crushers both are commonly used in crushing equipment, and also are used most. What are the difference and similarities of jaw and impact crusher? Follow me to know them.
Difference of jaw and impact crusher
Use
Jaw crushers are generally used for primary crushing, which breaks the large materials into suitable for the secondary crusher such as cone crusher. In the quarry plant, impact crusher is mainly used for fine crushing operations, cooperative crushing with jaw crusher. In general, Impact crushers break marble, granite. Because too hard material is not suitable for the crusher machine, it will a big loss for wear parts.
Applications
Jaw crusher is mainly crushing all kinds of ore and bulk materials. It can crush compressive strength is not more than 320MPA of materials. Dividing into coarse and fine crushing. In general, working for primary crusher. But sometimes can also be used for secondary fine crushing operation. This crusher machine has more extensive use.
The finished product of the impact crusher is a cube, no tension, and cracks, the particle shape is quite good. It is mainly used to treat all kinds of coarse, medium and fine materials (limestone, concrete, etc.) with side length not exceeding 500mm, and compressive strength not exceeding 350MPA. The size of the discharging particle can be adjusted. The crushing specifications are various. Need to add is that the impact crusher equipment is not suitable for crushing the surface moisture of more than 8-10% of the ore or viscous material. In addition, too hard material on the crusher wear-and-tear parts loss is very large.
Performance
The performances of the jaw crushers: crushing cavity deep and no dead zone which improves the feeding capacity and output. The crushing ratio is large and the product particle size is even. Shim type outlet adjustment device, reliable and convenient, and adjustment range that can increase the flexibility of the equipment. Simple structure, reliable work, and low operation cost. Equipment Energy Saving, single energy-saving 15% ~ 30 %, system energy saving more than double. The adjustment range of discharge opening is large, which can meet the requirements of different users. Low Noise, little dust.
The impact crusher has the following features: Large feeding port, high crushing cavity, high material hardness, large block size, and little stone powder. The clearance between the counterattack plate and the hammer plate can be conveniently adjusted, which can control the size of the discharge material. The shape of the particles is also good. Compact structure, strong machine rigidity. The rotor has a large moment of inertia. High Chromium Plate Hammer, impact resistance, abrasion resistance, impact force. Keyless connections, convenient maintenance, economical and reliable. It has the advantages of complete crushing function, high productivity, small wear of machine parts and high comprehensive benefit.
Crushing effect
Due to the limitation of the crusher machine condition, the particle size of the ore material after jaw crusher crushing is uniform, but the overall particle size is larger. So the users who require high product quality, in the purchase of the equipment. It is necessary to consider adding some additional secondary crusher. But the difference is that the impact crusher not only crushing strength but also with stone shaping effect. So after its treatment of ore materials are mostly cubic, fully able to meet the current stringent crushed stone production needs. So in some crusher plant, it often chooses to use a combination of both.
Working principle(jaw crusher vs impact crusher)
jaw crusher impact crusher
Jaw crusher is a typical example that depends on squeeze crushing. The crushing cavity which composes of moving jaw and static jaw. It stimulates the movement of animals’ jaws to break the material. It is also called “tiger mouth”. When working, the motor drives the eccentric shaft through the belt pulley to rotate, so that the moving jaw is close to and away from the fixed jaw periodically. The material is squeezed, twisted and crushed by multiple forces. The broken material falls down gradually until it is discharged from the outlet.
The impact crusher makes use of the board hammer on the high-speed moving rotor to produce a high-speed impact on the materials sent into the crushing chamber. The crushed material which along the tangent direction is thrown to the counter-attack plate at the other end of the crushing chamber at high speed, then crusher again. Then it bounces back from the counterplay to the battering ram. In the process, the materials will collide with each other, causing cracks, looseness, and crushing. When the particle size of the material is less than the gap between the counterattack plate and the board hammer, it is discharged from the machine.
Similarities of jaw and impact crusher
1. These two types of crusher equipment in the process of work, its running state is very stable, and strong reliability, not prone to failure, which greatly reduces the user’s maintenance costs.
2. Jaw crusher and impact crusher handle very similar types of materials. So it is more suitable for production and processing in the environment, and will not affect the surrounding environment.
3. Jaw crusher and impact crusher are widely used in many fields and play an important role in mines, machinery, metallurgy, building materials, and other fields. They can not only be used as crushing equipment alone can also be used in a variety of crushed stone production lines.
In short
jaw crusher vs impact crusher, the jaw crusher is mainly used for the primary crushing, the crushing stone is relatively large. The impact crusher is used for crushing medium-sized stone, mostly used for secondary crushing. The similarity lies in the extrusion force applied to the material. The degree of fragmentation depends on their structure and how they work. The impact crusher is a rotary swing, rotating cone and doing eccentric swing at the same time driving conic lining plate and fixed lining plate to extrude material. Jaw crushers are divided into simple pendulum type and compound pendulum type. The moving jaw drives the plane jaw plate and the fixed jaw plate to do the reciprocating extrusion movement to break the material.
At a word, the former is broken by a rotational swing with a circular trajectory, while the latter is broken by a reciprocating swing with a linear crushing motion. Compared with the jaw crusher, the working process of the impact crusher is continuous. The force exerted on the material in its cavity is the result of bending force, shearing force, and friction force. So it is easy to be broken. Therefore, the production capacity of the impact crusher, low power consumption.