How to choose a crusher, what can be used for reference?
How to choose a crusher for production is something that customers have always wanted to know when choosing a crusher. When choosing a crusher, they should consider the characteristics of the material itself, such as the type and hardness of the material, the water content, the degree of splitting, the size of the material in and out, the construction site and the output.
1. Material type and hardness
Material type and hardness are important principles for selecting a crusher. The hardness of different materials is different, and the hardness of materials is usually expressed by Mohs hardness. The molar hardness is divided into 10 grades. The greater the molar hardness, the more difficult it is to crush the ore, and vice versa.
2. Moisture content of the material
The water content of the material will also affect the choice of crusher. When the moisture content is too large, due to the increase of humidity, the fine-grained materials will agglomerate or stick to the coarse-grained materials, thereby increasing the viscosity of the materials, reducing the drainage speed of the ore, and reducing the production efficiency. If the situation is serious, it will even cause the drain to be blocked and affect normal production.
3. Structural density of materials
The degree of structural density of the material also directly affects the productivity of the crusher-when the ore is crushed, it is easy to break along the cleavage surface. Therefore, the productivity of crushed ore with developed cleavage is much higher than that of ore with dense crushing structure.
4. Particle size of feed and discharge
The particle size of the feed and discharge is used to determine the type of comminution equipment required and the degree of comminution.
If the content of coarse particles (large dry discharge mouth size) in the crushed material is high, or the ratio of the maximum feed block to the feed width is large, the crusher needs to achieve a larger crushing ratio (the ratio of the particle size of the material before crushing to the particle size of the material after crushing). Therefore, the production efficiency is reduced. If the fine particle content of the crushed material (close to or less than the size of the discharge port) is large, or the ratio of the maximum feed block to the feed width is small, the crushing ratio to be achieved is small, and the production rate of the crushed material should be increased accordingly.
5. Broken work site
The construction site area is also one of the factors that people should consider when choosing a crusher. In addition, the location of the crushing equipment will also affect the choice of crusher.
6. Production capacity
Production capacity is also an important indicator to determine the selection of crushing equipment. The traditional understanding is that the higher the output requirement, the larger the required size of the crushing equipment, and the corresponding input and output will increase.
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