Factors Affecting the Productivity of Impact Crusher

The productivity of impact crusher is an important performance indicator of the crusher. The main factors affecting its productivity are: the physical and mechanical properties of the rock and the structural parameters of the crusher.

I. The influence of the physical and mechanical properties of the rock:

This is determined by the source of stone and the needs of the project.

In the crushing process, the compressive strength of the rock is mainly used as an indicator of the ease of crushing. Because of the relationship between Platts hardness and compressive strength, and more intuitively reflect the ease of crushing operations, the Platts hardness coefficient is often used to classify rocks in engineering. The larger the hardness coefficient, the greater the compressive strength of the rock, the more difficult it is to crush, the lower the crusher productivity. On the contrary, the smaller the hardness coefficient, the higher the productivity of the crusher.

2. moisture of the material The rock contains a certain amount of moisture does not have any effect on the rock crushing, but when the rock contains a certain amount of mud or the rock crushing has produced powdery particles, the fine particles or mud will agglomerate and sometimes bond on the coarse particles or on the wall of the crushing chamber. This will reduce the discharge speed and lower the productivity. In serious cases, it will block the discharge opening and further affect the production.

Second, the impact of the impact crusher structure parameters:

The structural parameters of impact crushers vary from one to another, and the selection of a crusher with the right structural parameters to meet the needs of different rock crushing operations is crucial to the design and selection of crushing machinery.

1. Clamp angle of impact crusher

If the jaw angle is too large, the crushing cavity will not be able to clamp the rock, and the rock will easily jump upward and cannot be crushed, and even a safety accident will occur. When the jaw angle is too small, the crushing ratio is too small to meet the process requirements of stone crushing. Therefore, there should be a suitable jaw angle.

The size of the discharge opening of the impact crusher will affect the jaw angle and crushing ratio of the impact crusher. Under the premise of meeting the requirements of use, increasing the size of the discharge opening can reduce the jaw angle and crushing ratio, so that the productivity can be improved. Conversely, reducing the size of the discharge opening will reduce the productivity. The size of the discharge opening of many crushers are equipped with adjustment devices to meet different requirements.

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