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Product introduction of mullite brick
Mullite brick, as a good refractory material, has high hardness, high melting point and stable chemical properties. Mullite brick has high refractoriness, and its corrosion resistance to acid slag at high temperature is good, plus it has good high temperature resistance load, wear resistance, spalling resistance, etc. Mullite brick has high mechanical strength, thermal shock resistance, and the coefficient of thermal expansion is stable in a wide range, so it is widely used.
Features of mullite brick
Mullite brick refractories are high, up to 1790℃ or more. Load softening starting temperature 1600 ~ 1700℃. Pressure strength 70 ~ 260MPa at room temperature. Good thermal shock resistance.
More relevant refractory products: Ceramic fiber blanket
Parameters of mullite brick
| Item | MK60 | MK65 | MK70 | MK75 |
| Al2O3, % | ≥60 | ≥65 | ≥70 | ≥75 |
| SiO2, % | ≤35 | ≤33 | ≤26 | ≤24 |
| Fe2O3, % | ≤1.0 | ≤1.0 | ≤0.6 | ≤0.4 |
| Apparent Porosity, ％ | ≤17 | ≤17 | ≤17 | ≤18 |
| Bulk Density, g/cm3 | ≥2.55 | ≥2.55 | ≥2.55 | ≥2.55 |
| Cold Crushing Strength, Mpa | ≥60 | ≥60 | ≥80 | ≥80 |
| 0.2Mpa Refractoriness Under Load T0.6 ℃ | ≥1580 | ≥1600 | ≥1600 | ≥1650 |
| Permanent Linear Change On Reheating,% 1500℃X2h | 0～+0.4 | 0～+0.4 | 0～+0.4 | 0～+0.4 |
| Thermal Shock Resistances 100℃ water cycles | ≥18 | ≥18 | ≥18 | ≥18 |
| 20-1000℃ Thermal Expansich10-6/℃ | 0.6 | 0.6 | 0.6 | 0.55 |
| Thermal Conductivity (W/MK) 1000℃ | 1.74 | 1.84 | 1.95 | 1.95 |
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