The ball mill liner mainly plays three roles. One is to protect the ball mill cylinder, and the liner is close to the cylinder, forming a "separation" between the cylinder and the mineral material and medium, which plays a good buffering effect. The movement state of the material has a good grinding aid effect. In actual production, the liner has a variety of designs and shapes. Take the corrugated liner and the flat liner as an example. The corrugated liner can improve the mineral material and the medium. , The flat liner will play a good role in trimming the shape of the finished product. The third is to enhance the rigidity of the cylinder and improve the compression resistance of the cylinder.

The ball mill liner is a relatively important mechanical part of the ball mill. It will play three roles to protect the cylinder, change the running state of the material, and increase the cylinder’s compression resistance and rigidity. After long term use, the liner will also encounter varying degrees of damage and cause it to be unusable. The usual forms of damage are fracture, abrasion, deformation or falling off.

1. Fracture, this is a serious problem. The reason for this problem is the casting problem besides the use.

1）Unreasonable chemical composition design or inaccurate composition control during casting;

2）The quality problems are more serious, such as excessive impurities, substandard ingredients, etc.;

3）Defects are more serious, such as shrinkage, stomata, loose tissue, etc.;

4）Improper operation or unreasonable design of the heat treatment process;

5）Improper control and elimination of stress during processing and casting;

2. Wear-the ball mill liner will be affected by the impact, sliding and rolling caused by the grinding body and the material during the operation, and it will also be affected by the temperature. If it is wet grinding, it will be directly affected by the dual effects of water medium and electrochemical corrosion, and the liner will wear faster.　

3. Deformation of the lining board and falling off, as long as the lining board is hit hard, it will extend toward the edge and deform. When the liner is deformed, especially the state of arching, the bolts will be pulled off, and the liner will fall off at this time, which will cause the whole stop of the ball mill.