Cement ball mill is a kind of cement grinding equipment commonly used in cement plants. It is mainly used for grinding materials in the cement clinker section. Due to the advantages of stable work, high grinding efficiency and uniform strength of the finished product, it is often widely used in chemical, metallurgical and other industries.
Although the cement ball mill is so excellent, there are often failures in the daily use process, such as material rejection at the discharge port, which will affect the normal grinding of the equipment, and then affect the entire grinding operation.
So why does the cement ball mill have the phenomenon of material rejection?

1. The particle size of the material is too large
The larger particle size of the material will increase the grinding time of the cement ball mill, and if some larger materials cannot be crushed by the steel ball, it will also reduce the output power of the equipment and increase consumption. Under the continuous supply of materials, these materials that have not been crushed will be thrown out from the discharge port.
2. Insufficient or untimely replenishment of steel balls
When the cement ball mill works for a long time, the wear of the grinding media will increase, the diameter will become smaller, and the impact force on the material will also decrease. Moreover, if the grinding media is not replenished in time, it will also lead to the decline of the product quality of the equipment.
3. The size and ratio of the grinding body are not suitable
The size of the grinding body in the cement ball mill is not suitable, so that some materials cannot be crushed by the impact. In addition, the proportion of the grinding body in the cylinder is not appropriate, which will cause the output power of the equipment to fail to reach the output power when it is put into operation. Therefore, it is necessary to further adjust the size and ratio of the grinding body.
4. The ball mill liner is damaged
The lining plate in the equipment barrel can increase the friction with the grinding body, which is more conducive to lifting the grinding body and improving the processing capacity of the equipment, there will be more energy consumption in the friction between the grinding body and the lining plate, which not only can the grinding body not be lifted, but also cause the output power of the equipment to drop, resulting in material rejection.
Therefore, once the problem of material rejection occurs during the operation of the equipment, it is necessary to carefully check the equipment and deal with it in time to reduce the equipment failure rate and improve the grinding operation rate.
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