Mullite brick Good compactness, erosion resistant, wear resistant, good thermal conductivity. Used for upper structures and chutes of glass melting furnaces, hot blast stoves in metallurgy, transition and pre heating zones of cement kilns, and high temperature equipment in ceramics and petrochemical industry.
Mullite brick is a high - alumina refractory material with natural/synthetic mullite as the main crystal phase. It is made through processes such as batching, shaping, and high - temperature sintering (1600°C - 1700°C). Six quality inspection procedures ensure its quality.
Features and Properties
| Index Items | Mullite Refractory Bricks | ||
| A Machine-pressed Brick | B Machine-pressed Brick | Cast Large Brick | |
| Al₂O₃ /% | ≥ 70 | ≥ 70 | ≥ 65 |
| Fe₂O₃ /% | ≤ 1.2 | ≤ 0.2 | ≤ 0.8 |
| Bulk Density /g/cm³ | ≥ 2.55 | ≥ 2.65 | ≥ 2.50 |
| Apparent Porosity /% | ≤ 18 | ≤ 17 | ≤ 17 |
| Compressive Strength at Normal Temperature /MPa | ≥ 80 | ≥ 80 | ≥ 75 |
| Softening Temperature under Load 0.2MPa,T0.6/℃ | ≥ 1620 | ≥ 1700 | ≥ 1600 |
Also Called:Silica Mullite Brick;
Al₂O₃:60-65%;
Bulk Density:≥2.55g/cm³;
SiO₂:≥97%;
Bulk Density:≥1.86g/cm³;
Cold Crushing Strength:≥40MPa;
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