Characteristics and Applications of Alumina Ceramic Grinding Balls

Alumina ceramic grinding balls are mainly made by high-temperature sintering of high-purity α-alumina. Their alumina content is usually above 90%, and some can reach over 99%. This material features high hardness, excellent wear resistance, superior corrosion resistance and thermal stability. Its density typically ranges from 3.6 to 3.9 g/cm³, and its Mohs hardness can reach up to 9. Due to its dense structure and high chemical inertness, it is unlikely to introduce impurities during the grinding process and can withstand strong mechanical shocks and thermal stresses.

Alumina ceramic grinding balls are widely used in grinding processes in the fields of building materials, coatings, electronic materials, mining and chemical industries. In ball mills, they are used for grinding cement, mineral raw materials, ceramic glazes and magnetic materials, effectively enhancing grinding efficiency and reducing product contamination. In the ultrafine grinding of dyes and positive and negative electrode materials for lithium batteries, their high hardness and chemical stability ensure uniform particle size distribution and no impact on purity.

In conclusion, alumina ceramic grinding balls, due to their excellent physical and chemical properties, have become a key material in efficient grinding processes. Their high wear resistance and chemical inertness significantly extend the service life and ensure the quality of the grinding products, making them suitable for industrial fields with strict requirements for purity and particle size.