Impact crusher is a new type of high-efficiency crushing equipment, which is characterized by small size, simple structure, large crushing ratio, low energy consumption, large capacity and uniform particle size. In addition, it also has the effect of selective crushing. It is a promising device. But its biggest drawback is that the plate hammer and counterattack board are vulnerable to the wear and tear, especially when it is used for the crushing of the hard ores, the wear and tear is more serious, which requires frequent replacement. Due to the emergence of some wear-resistant materials, they have been applied in some metal concentrators.

Impact crusher can be divided into single-rotor impact crusher, double rotors impact crusher and single-stage impact crusher and so on. Impact crusher can handle a variety of materials and rocks  (granite, limestone, concrete, etc.) whose particle size is not more than 120-500 mm and the compressive strength is not more than 320 Mpa.

During the rock mining process, the impact crusher is suitable for medium and fine crushing the rocks. After the materials are sent into the material feeding mouth through the feeding machine, they meet the impeller rotating with high speed, and impact to the impacting plate with high speed and are crushed. As a result, it can also be called mineral impact crusher or impact stone breaker.

It is featured with the following characteristics:

1. It is suitable for the crushing of hard rock; high efficiency and energy saving;
2. The particle size is adjustable, which can simplify the crushing process;
3. It has large crushing ratio and high crushing efficiency.

Working Principle

Impact crusher is a machine making use of the impact force to crush the materials. When the machine works, driven by the electro motor, the rotor will rotate with high speed, and when the materials go into the action zone of the plate hammer, they will strike and are crushed on the plate of the rotor, and then are crushed again when they are thrown to the impacting device, and then the materials will bounce back from the impact lining board and go to the action zone of the plate hammer and are crushed again. This process will proceed repeatedly, and the materials go into the first, second and third impacting chamber to be crushed until they are crushed to the required granularity, and then discharged from the discharging mouth. Adjusting the gap between the impacting rack and the rotor can change the discharging granularity and the shape of the materials.

Impact crusher, also called rock impact crusher, stone impact crusher or coal impact crusher, is the most common used stone crushing equipment in stone processing.

Impact crushing machine is a crushing machine to break materials by impact energy. The motor drives the rotor to rotate with a high speed and the materials are sent into the crushing cavity from top and broken by the plate hammer on the rotor. The crushed materials crush to the counterattack plate with high speed and rebound to impact plate and be broken again.

With the development of productive forces, when jaw crusher can't meet the requirements of crushing technology, the impact stone crusher or mineral impact crusher is designed and developed. Impact pulverizer has a very wide range of models, from coarse crushing to medium size crushing, fine crushing, etc.