High-aluminium heat insulating brick
High Mechanical Strength, Thermal Resistance, Low Bulk Density, and Effective Thermal Insulation
Application
Thermal Insulation Layer and Crown/Arch of High-Temperature Industrial Furnaces
Description
Lightweight High-Alumina Brick (also known as High-Alumina Lightweight Refractory Brick/Porous High-Alumina Brick/Ultra-Lightweight High-Alumina Brick) is a type of insulating refractory brick. It is primarily manufactured from high-alumina clinker with the addition of polymeric binders and modifying additives, followed by high-temperature firing to achieve a porous lightweight structure.
Specifications
| Наименование | U/M | LTL-0.6 | LTL-0.8 | LTL-1.0 | LTL-1.2 |
| Al2O3 | % | 50 | 50 | 55 | 55 |
| Fe2O3 | % | 1.8 | 1.8 | 1.8 | 1.8 |
| Bulk Density | g/cm3 | 0.6 | 0.8 | 1.0 | 1.2 |
| Cold Crushing Strength | MPa | 2 | 3.98 | 4.98 | 5.98 |
| linear change on reheating | %°С h | 1350×12 | 1400×12 | 1400×12 | 1450×12 |
| Thermal conductivity | W/(m·K) | 0.25 | 0.29 | 0.35 | 0.45 |
| Working temperature | °С | 1300 | 1350 | 1380 | 1380 |
Features
High-Alumina Insulating Brick exhibits the following characteristics: high porosity, excellent thermal insulation properties, and thermal stability. It is ideally suited for constructing insulating and refractory linings in industrial furnaces, enabling:
- Lightweight & High Strength: Лёгкость и высокая прочность: Density 0.6–1.0 g/cm³, Compressive strength 5–20 MPa.
- High Refractoriness: Service temperature: Up to 1380°C (meets demands of high-temperature equipment)
- Superior Thermal Insulation: Low thermal conductivity: 0.2–0.4 W/(m·K) (enhances energy efficiency)
- Chemical Resistance: Withstands acids, alkalis, and salts (widely used in chemical industry applications)
- Easy Installation: Lightweight design simplify transport and installation
Applications
Ideal for Furnace linings (resistant to molten metal/slag corrosion); Thermal insulation layers in critical high-temperature zones
- Metallurgy
- Mechanical Engineering
- Ceramics Manufacturing
- Chemical Industry
