Liner of ball mill The domestic high-manganese steel is gradually replaced by medium-alloy steel liner, but with the continuous application of medium-alloy steel liner in ball mill liner, it has gradually replaced manganese steel and other liners to become the mainstream of market development. In addition to protecting the cylinder body, the cylinder liner also has an effect on the movement law of the grinding body. In order to meet the requirements of various working conditions (crushing or fine grinding), the shape of the liner is also different. When crushing is the main method, it is required that the liner has a strong ability to push the grinding body, and at the same time, the liner should have good impact resistance. When fine grinding is the main method, the protrusion of the liner is relatively small. The pushing effect is weak, the impact is small, and the grinding effect is strong. The liner is required to have good wear resistance.