In the mining industry friends, the stone crusher machine must not be unfamiliar, the following to talk about the stone crusher related to a few basic concepts.

1、 Comminution

Under the action of external force, the solid material overcomes the cohesion and makes the solid material broken, which is called comminution. The external force can be applied by human, mechanical, electric or blasting methods. Most of the quarrying methods are blasting, while the mechanical method is used to break the large block materials into small ones.

With the grinding process, the total surface area of the material is constantly increasing. Therefore, after the solid material is broken into small pieces or fine powder, the reaction speed of physical and chemical action can be increased. In addition, the mixture of several different solid materials must be in the fine powder state to obtain uniform effect.

2、 Fragility of materials

The difficulty of crushing materials is called fragility. When the same crusher grinds different materials under the same operating conditions, the production capacity is different, which indicates that the fragility of various materials is different. Density, structural uniformity, moisture content, viscosity, crack and fragility are related to the strength and hardness of the material, indicating the material's resistance to external forces, surface condition and shape.

The materials with high hardness and low strength are easier to be broken than those with high strength and low hardness. Obviously, the material with high hardness is not necessarily difficult to crush, but it is difficult to grind, and at the same time, the working surface of grinding machine is easy to wear.

3、 Crushing system

The crushing operation can be completed by different crushing systems. There may be different crushing systems depending on the nature of the material being crushed, the size of the draw, the required crushing ratio, the scale of production and the crusher used.

The crushing system includes two aspects: crushing stage and process in each stage. The number of stages of crushing system mainly depends on the crushing ratio and the type of crusher. In order to meet the requirements of increasing crushing ratio and reducing crushing stages, the crusher will develop to large crushing ratio, high efficiency and large scale.

Due to the continuous improvement and development of crusher, the improvement and development of crushing system has good conditions. At present, the crushing system not only reduces the number of crushing stages and simplifies the production process, but also carries out crushing and drying in a single process at the same time.

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