The crusher first appeared in the 19th century. It was originally a machine invented by the British for quarrying rocks and coal. It mainly sandwiched a stone between two iron rods and then operated it manually. This was also the prototype of the crusher. In the 1840s, the Germans invented the first hammer crusher, which was more efficient than early machinery. After that, the production and application of crushers gradually expanded. At the beginning of the 20th century, Americans invented the first cone crusher, which marked the beginning of the diversification of crushers. At present, crushers have been widely used in mining, construction, chemical industry, cement and other fields.
2. Classification of crushers
1. Hammer crusher
The hammer crusher is the earliest crusher. Its working principle is to use the rotation of the hammer head and shaft to break large stones into small particles. Hammer crushers can be divided into single-stage and multi-stage. Single-stage hammer crushers are suitable for crushing harder materials, while multi-stage hammer crushers are suitable for crushing soft materials.
2. Jaw crusher
The jaw crusher uses the pressure of the movable
Jaw Plate and the
Fixed Jaw Plate to crush or break the material. Jaw crusher is suitable for crushing materials with higher hardness, such as limestone, etc.
3. Cone Crusher
Cone crushers are divided into two types: compound cone crushers and hydraulic cone crushers. Hydraulic cone crusher is superior to compound cone crusher in all aspects of performance and efficiency, but the price is higher.
4.Impact crusher
The impact crusher mainly uses the collision and friction between the high-speed rotating rotor and the high-speed moving materials to break the materials. Impact crusher is suitable for crushing medium hard materials, such as granite, basalt, etc.
3. Application scope of crusher
Crusher has a wide range of applications and is mainly used in mining, construction, chemical industry, cement and other fields. In mines, crushers are mainly used for quarrying and coal mining to break large pieces of ore into small pieces; in the construction field, crushers are mainly used to produce bricks and sand for construction; in the chemical industry, crushers are mainly used In the production of chemicals such as fertilizers; in the cement field, crushers are mainly used to produce cement raw materials.
【Summarize】
Crusher has become an indispensable mechanical equipment in modern industrial production. With the continuous improvement of technological level, crushers are also constantly updated. When using a crusher, different types of crushers should be selected according to the hardness and crushing effect of the material to achieve the best crushing effect.
