The liner of the ball mill machine is an important part of the ball mill, which can not only effectively protect the barrel of the ball mill, but also enhance the impact of the medium and the material, and improve the efficiency of grinding. However, under the long-term operation of the grinding medium, the liner of the ball mill generally wears too fast. Today, I will give you a detailed introduction to the reasons for the faster wear of the ball mill liner and the corresponding solutions.
1. The heat treatment process of the ball grinding mill liner is unreasonable
The unreasonable heat treatment of the liner of the ball mill will not only aggravate the wear of the liner but also cause the fixing bolt to break under the action of large shearing force. In actual work, if the operator lacks knowledge of the material of the liner, the strengthening effect of the liner of the ball mill is likely to be insufficient, and deformation will often occur when the steel ball and the material are hit.
Solution: According to the material of the liner, proper pre-heat treatment of the liner of the ball mill grinder can effectively reduce the wear of the liner of the ball mill.
2. The ball mill liner produces greater friction with the material and steel balls
In the grinding process, friction will occur between the ball mill liner and the steel balls, and the material. Therefore, the hardness of the material and the number of steel balls will also cause the wear of the ball mill liner. If the hardness of the material is too large, the liner and steel balls of the ball grinding mill machine will be worn more seriously, and may even cause equipment damage. Secondly, during the working process of the ball mill, increasing the number of steel balls or using larger diameter steel balls will also increase the wear of the liner.
Solution: The operator should configure a reasonable size and quantity of steel balls according to the ratio of the ball mill liner to the steel balls. Secondly, control the ratio of the material to the steel ball, and the material should be twice that of the steel ball. Finally, the liner of the ball mill grinder machine should be selected according to the mineral type, and the steel ball and the liner should be reasonably matched.
3. The material of the ball mill liner is unreasonable
The material of the ball mill liner and its heat treatment process is the key to determining the mechanical performance of the ball mill liner. If the material of the liner is not properly selected, its fatigue strength and life will be greatly reduced, not only cannot meet the working requirements of the ball mill machine, but also plastic deformation or Drum up.
Solution: Choose a new type of wear-resistant liner material. At present, the commonly used ball mill liner materials include high manganese steel, high chromium steel, alloy steel, and wear-resistant rubber. It is recommended to use a composite liner composed of wear-resistant rubber and alloy steel, which can not only improve the toughness of the liner but also solve the contradiction between the toughness and stiffness of the ball grinding mill equipment.
4. The ball mill is not operating normally
If the ball mill is in a low-load operation state, the steel balls will directly impact the liner, causing serious wear and even breakage of the liner of the ball mill equipment.
Solution: The operator needs to adjust in time according to the running state of the ball mill. When the ball mill is running under low load, the ore intake of the ball mill needs to be adjusted in time.
In addition to the above reasons, the design, manufacture, and installation of the ball mill liner are also possible reasons for the excessive wear of the ball mill liner. If you want to know more about mining machinery, welcome to consult our customer service online.
