Mullite Bricks
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- Apparent Porosity: ≤17%
- Bulk Density : ≥2.55g/cm3
- Cold Crushing Strength : ≥60Mpa
- 0.2Mpa Refractoriness Under Load T0.6 ℃ : ≥1580
- Permanent Linear Change On Reheating （%）1500℃X2h: 0～+0.4
- Thermal Shock Resistances 100℃ water cycles: ≥18
Features
Description:
Mullite brick IS characterized by good high temperature resistance and good thermal shock resistance, whick comes into being mullite through calcine with clay, high alumina materials and ceramics.
The main applications are:
1,Sulfuric cracking furnace;
2,Fibrous glass furnance.
Specifications:
1,Low permanent linear change on reheating;
2,Good Thermal Shock Stability;
3,High dense structure.
Advantages:
1,High quality;
2,chemical corrosion- resistance.
Parameter
Physical and chemical index :
| Item | MU 60 | MU 65 | MU 70 | MU 75 | |
| Chemical composition | 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 | |
