Application of wear resistant ceramic tile in coal industry

Coal preparation is an important process for the comprehensive utilization of coal mine resources. Many metal and non-metal parts in many coal preparation equipment will suffer strong wear and quickly fail due to continuous work, resulting in a lot of human and financial consumption, and at the same time they are unable to Meet the continuous production needs of coal preparation plants. The serious wear and tear of coal preparation equipment and the low service life have become a serious obstacle to the development of coal preparation plants. Therefore, in view of the unique working conditions of coal preparation equipment, it is of great significance to reasonably research and develop new wear resistant materials to extend the service life of coal preparation equipment.

Wear resistant ceramic tiles are an important technical means to solve the reliability of various equipment in coal preparation plants. Among the traditional wear resistant materials, ceramic materials have become the most common and important type of materials in human life due to their wide sources and superior material properties. They are characterized by high hardness, wear resistance, and corrosion resistance. The wear resistant ceramic tile with alumina as the main component has become the most widely used material for its simple process, low processing cost, and good wear resistance. At present, it has been widely used in metallurgy, mining and chemical industries.

At present, wear resistant ceramic tile are widely used in cyclones, chutes and pipelines in coal preparation plants, and are important technical means to solve the reliability of various equipment in coal preparation plants. From the characteristics of the material itself, alumina ceramics are brittle materials, and brittle materials will not deform under impact, impact, smashing and other behaviors. Studies have shown that when brittle materials are eroded by solid particles or solid-liquid two-phase flow, cracks are often generated on the surface of the material where there are defects, and then fragments are peeled off or the whole is broken.

The wear resistance of the wear resistant ceramic tile mainly depends on three aspects, namely the formula, the raw material powder and the sintering process. After a lot of research, HUAO optimized the formula, raw material particle size and sintering process. Through various methods, the density, hardness, and impact wear performance of the new product were tested and found that the density and impact wear resistance of the new product were greatly improved. The increase in range.

Considering the development status of domestic wear resistant materials and the demand of the coal preparation market, expensive materials such as silicon carbide cannot be used in the coal preparation field on a large scale. At the same time, considering the reasonable cost performance of the material, in the future, the research focus of wear resistant materials should be placed on the alumina wear resistant ceramic system with broad market prospects.