General description of High temperature high density white color bricks Polycrystalline mullite bricks
Refractory brick is a kind of insulation material adoption organic matter as ignition loss substance in order to increase the porosity, small volume density , good insulation effect, high mechanical intensity , small thermal conductivity and low heat storage. They are widely used in Fire – Clay Insulating Refractory Brick, High-Alumina Insulating Refractory Brick , Diatomaceous Insulating Brick, High Grade Insulation Brick :XJM Series Light-Weight Insulation Brick , B Series Thermal Insulation Brick, Calcium Silicate Insulating and Refractory Products, Clay Insulation Brick, Foam Diatomite Insulation Brick, and Light –Weight Insulation Brick.
Features of High temperature high density white color bricks Polycrystalline mullite bricks
Lower heat storage than denser refractories
low levels of iron and other impurities
Lightweight and energy-efficient
High compressive strength
Typical application of High temperature high density white color bricks Polycrystalline mullite bricks
Electrolytic Aluminum Industries
Iron & Steel Industries
Non-Ferrous Metals Industries
Glass Industries
Ceramics Industries
Technical data sheet of High temperature high density white color bricks Polycrystalline mullite bricks
Materials of Insulation Brick | Lightweight Clay | Lightweight High-alumina | Lightweight High-alumina | |
°C Operation Temp | 1225 | 1300 | 1400 | |
Chemical Composition | AI2O3%≥f | 30 | 48 | 55 |
SiO2%≥ | ||||
Fe2O3%≤ | 1.5 | 1.1 | 1.0 | |
TiO2%≤ | 2.0 | 1.0 | ||
CaO%≤ | ||||
Alikali %≤ | 1.5 | 1.5 | 1.5 | |
g/cm3 Density | 0.70 | 0.85 | 0.95 | |
%> Apparent Porosity | 75 | 65 | 65 | |
MPa ≥ Cold Compression Strength | 1.0 | 1.5 | 2 | |
% Linear Change on Reheating | 1250°C/12h-1-0 | 1400°C/12h-1-0 | 1500°C/12h-1-0 | |
(0.02MPa) Refractoriness under Load | ||||
0.2%°C≥ | 1150 | 1250 | 1380 | |
2.0%°C≥ | 1200 | 1350 | 1470 | |
5.0%°C≥ | 1250 | 1400 | 1510 | |
Thermal Conductivity | ||||
20°C(W/mK)≤ | 0.17 | 0.3 | 0.4 | |
800°C(W/mK)≤ | 0.25 | |||
1000°C(W/mK)≤ | 0.35 | 0.45 | ||
