Production Technology and Advantages of Ball Mill Liner

Ball mill liner is a kind of liner material with high wear resistance, which is mainly used for the lining of ore mill, coal mill and cement mill, which can effectively protect the inner wall of the equipment and prolong the service life of the equipment. The main production process of ball mill liner includes raw material selection, crushing, screening, ball milling, molding, sintering, cooling, testing and other links.

First of all, the selection of raw materials for ball mill linings is very important. The ball mill liner is usually made of high chromium alloy cast iron, and after crushing, screening and other processes, the raw materials with fine and uniform particles are obtained, which provides a reliable basis for the subsequent ball milling process.

Secondly, the crushing and screening process is an important part of the ball mill liner production. First, the large pieces of raw materials are crushed, and then the crushed materials are classified by screening equipment to obtain the required particle size, which is ready for the subsequent ball milling process.

Next is the key link of the ball milling process. The sieved raw material is mixed with a specific proportion of metal elements such as silicon and manganese, and added to a ball mill for ball milling. During the ball milling process, the raw material particles will gradually become smaller to form a uniform particle body, and the metal elements will be fully mixed and dispersed with the raw material particles. The particles after ball milling have better uniformity and affinity, which can improve the overall wear resistance.

Then there is the molding process. The raw material particles after ball milling are molded by a molding machine to have the required shape and size, and the surface roughness is increased to improve the friction and adhesion between the ball mill liner and the inner wall of the equipment.

The formed ball mill liner requires a sintering process. Through the high-temperature sintering process, the voids between the raw material particles are eliminated, and the material becomes denser and harder. At the same time, the metal elements will also chemically react with the raw material particles during the sintering process to form a dense compound structure, which makes the ball mill liner have higher hardness and wear resistance.

The sintered ball mill liner needs to be cooled. The cooling process can avoid the internal stress of the material due to high temperature sintering, so that the ball mill liner is more stable and reliable in use.

Then there is the testing session. The physical and chemical properties of the ball mill liner are tested, including hardness, wear resistance, compressive strength and other indicators to ensure that the product quality and performance meet the requirements.

Compared with other liner materials, ball mill liner has the following advantages:

The first is high wear resistance. After the ball mill process, the ball mill liner has a uniform particle body and a dense structure, which can effectively resist the impact and wear of large particle materials and improve the service life of the equipment.

Followed by high hardness and strength. The ball mill liner is sintered at high temperature to form a hard compound structure with high hardness and compressive strength, which can resist the high pressure and extrusion force generated during the operation of the equipment.

There is also excellent surface roughness. After the forming process, the surface roughness of the ball mill lining plate increases, which can increase the friction and adhesion with the inner wall of the equipment, and improve the stability and reliability of the lining plate.

In addition, the ball mill liner also has good impact resistance and corrosion resistance. The material and process of the ball mill lining plate determine that it has good mechanical properties and chemical corrosion resistance, can adapt to the harsh working environment, and improve the service life and reliability of the equipment.

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