The common characteristics of alumina ball and zirconia ball are used as grinding media, but the surface of zirconia ball is smooth, high density, not easy to wear, but the price is high, the one-time investment is large, and the market is similar to zirconia ball products. There are so many different names. The alumina ball is cheap but has low wear.
Performance comparison of two different grinding balls
First look at the characteristics of zirconia balls:
The zirconia ball uses rare earth yttrium oxide as a stabilizer, and uses high whiteness and high fineness as raw materials to ensure that the material is pollution-free. The grinding efficiency is high: 1.6 times that of the yttria-stabilized zirconia ceramic microbead material, and the grinding efficiency is higher than that of ordinary zirconia beads under the same conditions. In addition, the zirconium ball has good fluidity, good roundness and smooth surface, and the wear resistance of the equipment is lower than other grinding media. Finally, there are the impact resistance and low wear of its products: TZP zirconia ceramic beads have good toughness in high-speed operation, and will not crack, peel, and wear only half of the zirconium silicate beads in high-concentration machinery.
Look at the advantages of alumina balls:
Alumina grinding balls refer to bauxite, roller powder, alumina, high-temperature calcined α alumina powder as raw materials, which are produced during the process of mixing, crushing, grinding (slurry, clay), molding, drying, and sintering. Grinding media, and widely used ball stone. According to the different alumina content, it can be divided into medium aluminum balls, medium high aluminum balls and high aluminum balls. Chinese aluminum balls and medium-high aluminum balls are accepted by most ceramic factories due to their low prices. Mainly used for grinding ceramic blanks. Due to its high strength, high hardness, high wear resistance, small size, high temperature resistance, corrosion resistance, pollution-free and other excellent properties, high aluminum balls have been widely used in different types of ceramics, enamel, glass, chemical industries and other factories. Thick and hard materials and deep processing, especially alumina balls with a content of 92 are the most commonly used.
Advantages and disadvantages of alumina ball and zirconia ball
Alumina balls are used in the production and processing of ball milling equipment as long as the grinding products not only choose a wide range of products, but also comprehensively reduce costs in terms of power consumption, labor, and equipment. Finally, it is undeniable to mention that if the grinding medium material working under centrifugal force is compared with zirconia grinding balls, the monoclinic crystal density is 5.85. The density of alumina grinding balls is only 3.9-4.0. Therefore, choosing zirconium oxide as the grinding medium will generate greater shear force and improve the grinding efficiency. If it is used as a material for grinding tanks or bearings and other parts, it will be better to choose alumina ceramic balls with higher hardness.
