Low-Alumina Inert Alumina Ceramic Balls: A Key Catalyst Support Material for Industrial Applications
Low-Alumina Inert Alumina Ceramic Balls are spherical fillers produced from high-quality chemical-grade china clay through shaping and high-temperature sintering. Their Al₂O₃ content typically falls within the 30%–45% range, with Al₂O₃+SiO₂ ≥90% and Fe₂O₃ ≤1%. Key technical parameters include: water absorption ≤3%, bulk density 1.40–1.50 g/cm³, operating temperature ≥1200°C, Mohs hardness level 7, acid resistance ≥98%, and alkali resistance ≥82%. Crushing strength varies with ball diameter, e.g., ≥420 N for Ф6 mm and ≥2800 N for Ф25 mm particles. The product conforms to China's chemical industry standard HG/T 3683.1—2000, Industrial Ceramic Balls – Inert Ceramic Balls. In industrial reactors, low-alumina inert alumina ceramic balls primarily serve as catalyst bed support media, covering materials, and tower packings. Their functions include: increasing the number of gas or liquid distribution points to achieve uniform flow; buffering the impact of incoming fluids on the catalyst b...