Insulation Bricks
Overview:
Insulation bricks, also known as lightweight refractory bricks, are designed to provide high thermal resistance while maintaining low thermal conductivity. These bricks are essential for reducing heat loss and improving energy efficiency in high-temperature applications.
| PARTICULARS | CFI | HFI | HFK |
|---|---|---|---|
| SiO2 (%) | 69.7 | 61.5 | 54.1 |
| AI2O3 (%) | 24.3 | 33.2 | 41.5 |
| Fe2O3 (%) | 2.2 | 1.9 | 1.8 |
| TiO2 (%) | 2.0 | 2.5 | 1.9 |
| CaO+MgO (%) | 0.5 | 0.3 | 0.2 |
| Others (%) | 0.9 | 0.6 | 0.5 |
| Max. Service Temp. (°C) | 1000 | 1350 | 1400 |
| Raw Material Base | Fire Clay & Mica | Fire Clay & Kyanite | Fire Clay & Kyanite |
| Reversible Thermal Expansion (% at 1000°C) |
0.50 | 0.50 | |
| BD (gm/cm³) Max | 0.90 | 1.05 | 1.0 |
| AP (%) Min | 60 | 55 | 55 |
| CCS (kg/cm²) Min | 10 | 25 | 25 |
| PCE (orton) Min | 20 | 29 | 30 |
| PLC (%) Max | ±1.5 at 1000°C/S hr | ±1.5 at 1350°C/S hr | ±1.5 at 1400°C/S hr |
| Thermal Conductivity (Kca/m/hr/°C) |
|||
| 300°C | -- | 0.24 | 0.26 |
| 500°C | -- | 0.26 | 0.29 |
| 800°C | -- | 0.28 | 0.31 |
| Weight of Std Brick (Kg.) Size: 230x114x76mm |
1.70 | 2.10 | 2.00 |
| Application Area | Backup lining for Boiler & Reheating Furnace |
Backup lining for Glass tank furnace & Blast furnace |
Backup lining for Glass tank furnace & Blast furnace |
Properties:
Insulation bricks are lightweight, porous, and have excellent thermal insulation properties. They are available in different grades, with varying densities and compositions to suit specific thermal and mechanical requirements.
Applications:
Commonly used in furnaces, kilns, and other industrial heating equipment, insulation bricks help in minimizing heat loss and maintaining consistent internal temperatures. They are widely used in industries such as metallurgy, ceramics, cement, and power generation.