The main component of limestone is calcium carbonate (CaCO3), which is the main raw material for the manufacture of cement, lime and calcium carbide. After being crushed and pulverized, limestone is widely used in papermaking, rubber, paint, coating, medicine, cosmetics, feed, sealing, bonding, polishing and other fields. It is an indispensable and important raw material in the development of modern industry.

Limestone has low hardness, high brittleness, low silicon content and low abrasiveness. Limestone is easier to break and the production cost is relatively low. As long as the appropriate process configuration and equipment selection are adopted, a good crushing effect can be obtained.

Combined with the principle of "more crushing and less grinding" in the limestone production line, it is necessary to produce the best particle size in the stage of crushing the limestone, so the impact crusher equipment is most suitable for the crushing equipment in the limestone production line. The impact crusher has a unique working mechanism and structural design features. In terms of performance characteristics, impact crusher has obvious technical advantages compared with hammer crusher: it has the advantages of small size, large processing capacity and good economy.

So, what are the advantages of using impact crusher for limestone crushing compared to hammer crusher? Compared with the hammer crusher, the impact crusher has a larger crushing ratio and can more fully utilize the high-speed impact energy of the entire rotor.

In actual production, the impact crusher is the main crusher of the limestone crushing production line. The crushing characteristics of this machine are remarkable:

● The discharge granularity is uniform, the discharge is in the shape of a cube, and the content of fine powder and dust is low.

● The impact crusher can effectively deal with materials with large moisture content and prevent the blockage of the crusher.

● During the extrusion interval, the material can pass freely, and the processing capacity is large.

● The minimum power and liner consumption is guaranteed under the premise of a certain output particle size and throughput.

● The particle size of the material is uniform and the processing capacity is large.

The crushing effect of the impact crusher on the material mainly includes the following processes: the first is the free crushing stage, the material enters the crushing cavity and is immediately impacted by the high-speed blow hammer. The friction between the crushing chambers breaks the materials in the crushing chamber. At the same time, the kinetic energy is obtained, and it rushes to the counterattack plate at high speed. After the material collides with the counterattack plate and breaks again, it is bounced back to the action area of ​​the blow hammer and is impacted by the blow hammer again. This is repeated until it is crushed into the required particle size and discharged out of the machine. In the selection of materials, due to the relatively large loss of plate hammer, the materials with relatively high hardness should not be crushed by the impact crusher. It is suitable for medium and fine crushing of brittle materials below medium hardness such as limestone, coal, calcium carbide, quartz, dolomite, iron sulfide ore, gypsum and chemical raw materials.