Selection method of liner for wet ball mill

When choosing a liner for a wet ball mill, multiple factors need to be considered in order to choose a suitable liner material.

1. Hardness

First of all, hardness is an important consideration.Different liner materials have different hardness, which directly affects the wear resistance of the liner.For example, high-alumina ceramic liners, silicon carbide ceramic liners and zirconia ceramic liners have high hardness and can effectively resist the impact and wear of abrasive particles.The high-manganese steel liners and high-chromium cast iron liners will harden by cold work when they are hit, and they also have high hardness.However, for some materials with lower hardness, excessive hardness may cause excessive wear of the liner steel balls in the ball mill, increasing costs.Therefore, it is necessary to choose the appropriate liner hardness according to the hardness of the material.

2. Affordability

Secondly, the load bearing capacity is also a key factor in the selection of liners.During the operation of the ball mill, the liner will withstand the impact, friction and pressure of the material and the steel ball.If the load bearing capacity of the liner is insufficient, it will be prone to fracture, deformation and other problems, affecting the normal operation of the ball mill.For example, in a large wet ball mill, due to the large amount of material and the large diameter of the steel ball, the load-bearing capacity of the backing plate is required to be high.At this time, you can choose medium alloy steel liners or high chromium cast iron liners, which have high strength and hardness and can withstand large loads.

3. The nature of the processed materials

The nature of the material is also an important consideration in choosing the liner.Different materials have different chemical properties, physical properties and particle size distributions.For example, for materials with strong corrosion resistance, you can choose liner materials with good corrosion resistance, such as high chromium cast iron liners or ceramic liners.For materials with greater viscosity, rubber liners may be a better choice because of their good elasticity and non-slip properties, which can prevent the material from sticking to the liners.For materials with higher hardness, you can choose liner materials with higher hardness, such as ceramic liners or high chromium cast iron liners.

4. Material particle size

Finally, the particle size of the crushed material will also affect the choice of liner.In different silos of ball mills, the particle size of the materials is different, and the requirements for the backing plate are also different.For example, in a crushing silo, the particle size of the material is large, and it is necessary to choose a liner material with high lifting capacity and impact resistance, such as a high manganese steel liner.In the fine grinding silo, the particle size of the material is small, and it is necessary to choose a liner material with good wear resistance and wear resistance, such as a rubber liner or a ceramic liner.