Cone Crusher Finished Product Needle RateDate:2020-04-20

Summary:What should I do if the needle rate of finished cone crusher is high? Cone crusher is a commonly used crushing equipment in machine-made sand production line. A

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What should I do if the needle rate of finished cone crusher is high? Cone crusher is a commonly used crushing equipment in machine-made sand production line. According to the hardness and other properties of the material, it is judged whether it is in the first or second level. When the cone crusher is working, the material is crushed continuously by squeezing the material in the crushing chamber. The finished crushed stone needs to contain reasonable needle flake particles to enter the next level of production equipment, otherwise it will increase the next level The pressure of the crushing equipment and the finished product do not meet the standards for sand and stone for engineering. It can be seen that the finished needle rate of cone crusher production will have many effects. This article and everyone analyze the reasons and solutions of the high needle rate of finished cone crusher.

1. What is the finished needle rate and needle flake particles?

In construction projects and infrastructure projects, too many needle-like particles will reduce the toughness, which will lead to a substantial decrease in the compressive strength, tensile strength and resistance of aggregates such as concrete. The finished needle flakes processed by mining equipment refer to small particles with a length-to-width ratio of less than 0.4. The proportion of these small particles in the overall finished product output is the needle rate, needle rate, gradation, and powder content Each factor in the grain shape determines the quality of the finished sand and gravel, and affects whether it meets the national sand standard.

Cone Crusher

Second, the reason and solution of the high needle rate of the finished product of the cone crusher

There are many factors that affect the rate of the sandstone finished needles. The common ones are the type of material, hardness, the cavity shape of the crusher, the inlet and outlet of the crusher, the particle size of the inlet and outlet, the running speed of the internal components of the crusher, etc. If the nature of the material matches the type of crusher, the factor of the high needle rate of the finished product caused by the material can be excluded; if the material enters the crushing chamber of the cone crusher, there are more needle-shaped particles in the initial stage of crushing. But with the extension of the crushing time, there are fewer and fewer needle-shaped particles, which means that it is caused by the internal operating parts of the crusher, and the speed of the eccentric shaft affects the crushing efficiency. We can appropriately increase the eccentricity of the cone crusher Shaft speed increases crushing efficiency, reduces finished needle rate, and improves sand quality.

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