High Alumina Ceramic Balls: Technical Specifications and Industrial Applications
High alumina ceramic balls are precision ceramic grinding media manufactured from α-alumina (Al₂O₃) as the primary raw material through high-temperature calcination. Typical alumina contents are 92%, 95%, or 99%, corresponding to density ranges of 3.60–3.90 g/cm³ and water absorption below 0.01%. Their dense crystalline structure yields a Vickers hardness (HV) of 1300–1500, imparting excellent wear resistance and chemical stability. In terms of grinding efficiency and energy consumption control, the wear rate of high alumina ceramic balls is typically ≤0.01‰ (calculated per ton of material per hour), significantly lower than that of natural pebbles and conventional zirconium silicate balls. Their low self-wear also effectively reduces iron contamination during the grinding process, making them suitable for powder processing applications with strict requirements for color and purity. These products are widely used in wet and dry ball milling processes across industries such as non-metal...