Corundum Refractory Balls are ceramic spheres made mainly from high - purity alumina. They have a dense structure and high surface finish, and are widely used in industrial environments that require wear resistance, high - temperature resistance, and chemical corrosion resistance.
Features and Properties
| Performance Indicators / Products | 90 Series | 92 Series | 95 Series | 99 Series |
| Al₂O₃% | ≥ 90 | ≥ 92 | ≥ 95 | ≥ 99 |
| Fe₂O₃% | ≤ 0.3 | ≤ 0.25 | ≤ 0.15 | ≤ 0.1 |
| Water Absorption % | ≤ 0.8 | ≤ 0.8 | ≤ 0.8 | ≤ 0.8 |
| Bulk Density (g/cm³) | ≥ 2.8 | ≥ 3.0 | ≥ 3.1 | ≥ 3.2 |
| Packing Density (g/cm³) | ≥ 1.7 | ≥ 1.9 | ≥ 2.0 | ≤ 2.1 |
Also Called:Silica Mullite Brick;
Al₂O₃:60-65%;
Bulk Density:≥2.55g/cm³;
SiO₂:≥97%;
Bulk Density:≥1.86g/cm³;
Cold Crushing Strength:≥40MPa;
Al₂O₃:≥45%;
Apparent Porosity:≤15%;
Cold Crushing Strength:≥50MPa;
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