Mullite heat insulation brick has high structure strength, low creep, small thermal expansion rate, strong resistance
1. Main Characters:
The raw material for mullite heat insulation brick is mullite. This kind of brick has high structure strength, low creep, small thermal expansion rate, strong resistance to chemical erosion and good thermal shock resistance.
2. Applications:
Can be used as working lining, where contact with flames directly. This kind of brick can save the kiln energy very much.
3. Physical and Chemical Index
Brand Quality | GT23 | GT26 | GT28 | GT30 | ||
Classification Temperature () | 1260 | 1430 | 1540 | 1650 | ||
Bulk Density (g/cm3) | 0.55 | 0.78 | 0.88 | 1.03 | ||
Cold Crushing Strength (Mpa) | 1.2 | 1.6 | 2.1 | 2.5 | ||
Modulus of Rupture (Mpa) | 0.9 | 1.4 | 1.6 | 2.1 | ||
Reheating Linear Change (%) CT-30 X 8H | 1230 -0.5 | 1400 -0.5 | 1510 -0.5 | 1620 -0.9 | ||
Thermal Expansion1000% | 0.5 | 0.7 | 0.8 | 0.9 | ||
Thermal conductivityW/m.k
| 400 | 0.14 | 0.27 | 0.32 | 0.41 | |
600 | 0.16 | 0.29 | 0.34 | 0.43 | ||
800 | 0.18 | 0.31 | 0.36 | 0.44 | ||
1000 | 0.20 | 0.33 | 0.38 | 0.45 | ||
Al2O3 (%) | 37 | 58 | 67 | 73 | ||
Fe2O3 (%) | 1.0 | 1.0 | 1.0 | 0.5 | ||
Tolerance | >250mm ±1.0mm <250mm ±0.5mm Corner edge damage: a+b+c< 30mm | |||||
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Quality Brand | B5 | B6 | B7 |
Classification Temperature () | 1330 | 1430 | 1530 |
Bulk Density (g/cm3) | 0.78 | 0.86 | 0.92 |
Cold Crushing Strength (Mpa) | 2.6 | 3.3 | 3.5 |
Modulus of Rupture (Mpa) | 1.7 | 2.0 | 2.0 |
Reheating Linear Change (%) CT-30 X 8H | 1300 -0.53 | 1400 -0.54 | 1500 -0.52 |
Thermal Expansion1000% | 0.50 | 0.43 | 0.54 |
Thermal conductivityW/m.k350 | 0.22 | 0.25 | 0.31 |
Al2O3 (%) | 32 | 36 | 60 |
SiO2 (%) | 63 | 62 | 38 |
Fe2O3 (%) | 1.0 | 1.0 | 1.0 |
Tolerance | >250mm ±1.0mm <250mm ±0.5mm Corner edge damage: a+b+c< 30mm | ||
