博文

目前显示的是 七月, 2026的博文

Low-Alumina Inert Alumina Ceramic Balls: A Key Catalyst Support Material for Industrial Applications

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 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...

Core Performance Advantages of Wear-Resistant Alumina Ceramics

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Made from high-purity α-Al2O3 and sintered at 1600–1800°C, wear-resistant ceramics offer ultra-high hardness, excellent high-temperature resistance, chemical stability, and lightweight benefits. They are ideal for industrial equipment protection, effectively solving wear-related issues and promoting the upgrade of various industries toward high efficiency, energy saving, and low carbon. The outstanding performance of alumina wear-resistant ceramics is the foundation for their adaptability to extreme industrial conditions. Verified by professional testing and industrial practice, their key performance indicators far exceed those of traditional metal protective materials. The specific advantages are as follows: Extraordinary wear resistance: Mohs hardness up to 9 (HRA 90–95), second only to diamond. The dense crystal structure results in extremely low wear loss. In dry grinding applications, its wear resistance is 200 times that of manganese steel liners, and up to 500 times in wet ball ...