How to control the particle size of sand and gravel in cone crusher

　　Cone crusher is actually a cone crusher, also called cone crusher. This equipment is a very commonly used crushing equipment in crushing sand and gravel aggregates. In the field of sand and gravel crushing, it is necessary to control the grain shape of crushed sand and gravel. Do you know how the cone crusher controls the shape of the crushed sand and gravel?

　　In the construction field, the increase of needle-like particles in concrete aggregates will lead to a decrease in the overall compressive strength of the building and increase the consumption of cement in the construction process; similarly, in asphalt mixtures, needle-like particles are The increase will also lead to a decrease in the overall density and compressive and tensile strength of the mixture. It can be seen that the size of the needle-like particle shape plays an important role in the quality of the crushed product.

Next, we will explain the control of the crushing rate of the cone crusher:

　　When the material passes through the crushing cavity of the cone crusher, its needle rate will increase rapidly with the occurrence of extrusion and crushing failure, and will gradually fall back after reaching a certain level. Combining with the relevant research, it is found that the particle size of the material will become more uniform after the screening or particle size separation process before entering the crusher; . As more and more material particles are crushed by extrusion, the needle-shaped particles increase sharply; when the extrusion and crushing failure further increases, some material particles, including needle-shaped particles, will be squeezed twice or more pressure effect.

　　In the second half of the crushing process, the needle rate of the material in the crushing cavity is continuously decreasing and returns to the maximum range. It can be seen that in the working process of the cone crusher, the frequency of extrusion and crushing is increasing, which is beneficial to reduce the needle-shaped particles in the crushed products. Therefore, the increase of the spindle speed can improve the granular quality of the crushed products to a certain extent.