There are two major trends in the development of the powder industry today, namely: high purity and high fineness. The purity of ultrapure powder needs to be 99.99% or higher, and the fineness of ultrafine powder needs to be at the nanometer level. There are two main types of commonly used powder preparation processes: physical method and chemical method. The powder produced by chemical synthesis has good fineness, but may be poor in purity. As a physical method, ball milling is widely used in the powder industry. Among them, planetary ball mills, stirring mills, vibration mills, etc. can achieve micron-level fineness, while sand mills can achieve sub-micron or even nano-level fineness. . To achieve high-purity and high-fine powder, not only advanced grinding machinery is required, but also high-quality grinding media is required to match it.
For sand mills with wider material adaptability, higher efficiency and more advanced grinding equipment, the smaller the size of the grinding medium, the greater the hardness and density, and the higher the proportion of grinding balls per unit volume. The more contact points between them, the more stable the nature of the medium itself, the higher the degree of crushing of the product material, the lower the wear and the higher the grinding efficiency.
Zirconia ceramic grinding balls have large specific gravity and small particle size, and will not pollute the materials to be ground, meeting the production needs of ultrafine powders. Therefore, zirconia ceramic balls have become the most commonly used grinding media in sand mills. At the same time, ZrO2 ceramic balls, as a product with a large amount and a wide range of applications, have been widely used in many industries such as ceramics, building materials, chemicals, coatings, electronics, machinery, food, medicine, and cosmetics.
Because ZrO2 material itself has excellent characteristics of high hardness, high strength, high toughness, high wear resistance, high corrosion resistance, high bulk density and high grinding efficiency, in addition to being widely used in ZrO2 ceramic powder grinding, ZrO2 ceramic balls In other electronic ceramic powders, magnetic material powders, high-tech structural and functional ceramic powders, daily ceramic pigments and glazes, chemicals and various coatings, mechanical polishing powders, pharmaceutical and food powders, as well as in special It also plays an extremely important role in the ultra-fine grinding of inorganic material powders (such as ZrSiO4, titanium dioxide, etc.), which is unmatched by other grinding media in reducing the introduction of impurities in the material to be ground and improving the grinding and dispersing effect.
