Light weight clay brick features excellent thermal insulation properties. It is characterized by their low cost, low density, and low thermal conductivity. And it is widely used in thermal equipment. Kerui Refractory offers a variety kinds of bricks.
- Al2O3: ≥30-48%;
- Bulk Density: 0.6-1.5g/cm³;
- Thermal Conductivity: 0.25-0.5W/m·k;
- Cold Crushing Strength: 2-4MPa;
Specific Parameters of Kerui Light Weight Clay Brick
| Item/Grade | NG135-1.3 | NG135-1.2 | NG130-1.0 | NG125-0.8 | NG120-0.6 |
|---|---|---|---|---|---|
| Bulk Density, g/cm³ | ≥1.3 | ≥1.2 | ≥1 | ≥0.8 | ≥0.6 |
| Cold Crushing Strength, MPa | ≤5 | ≤4.5 | ≤3.5 | ≤2.5 | ≤1.3 |
| Permanent Linear Change, % Experimental Conditions | 1350℃*12h | 1300℃*12h | 1250℃*12h | 1200℃*12h | |
| 02~1 | |||||
| Thermal Conductivity Coefficient, W/(m·K) Average Temperature (350±25)℃ | ≤0.55 | ≤0.5 | ≤0.4 | ≤0.35 | ≤0.25 |
Introduction of Kerui Light Weight Clay Bricks
Light weight clay bricks are insulating refractory brick made from a mixture of clay and grog. These raw materials are fired at high temperatures of 1200-1400°C. Kerui Refractory utilizes high-quality raw materials and advanced production processes to manufacture these bricks. Their alumina content is approximately 30-46%. They exhibit exceptional performance. So, they are a preferred choice for numerous high-temperature industry partners.
Characteristic Features of Insulated Clay Bricks
- Low thermal conductivity: Its thermal conductivity is between 0.23 and 0.65 W/(m·K). The thermal conductivity is much lower than that of ordinary bricks. This brick can prevent heat transfer.
- High porosity: The porosity is between 40 and 70%. This enhances the insulation effect.
- Strong thermal shock resistance: Its permanent linear change is between -2 and 1%. The clay insulation bricks will not crack under large temperature changes.
- Good insulation effect: Due to its low thermal conductivity, high porosity, and other characteristics, this brick has a good insulation effect. It can effectively improve energy efficiency.
- Low bulk density: Its density is between 0.5 and 1.5 g/cm³. Lightweight clay insulation bricks are lightweight. It can reduce the structural load of high-temperature buildings.
Utilization Scenarios of Fire Clay Insulation Brick
Due to its excellent insulation and thermal stability, it is widely used for kiln insulation layers, linings, flues, pipes, and other high-temperature equipment. It is mainly used in the following fields:
- Steel industry: Steelmaking furnaces, converters, electric furnaces, refining units, etc.
- Non-ferrous metals industry: Smelting furnaces, aluminum electrolysis furnaces, heating furnaces, gas furnaces, homogenizing furnaces, annealing furnaces, etc.
- Building materials industry: Glass furnaces, cement kilns, lime kilns, building walls, etc.
- Chemical industry: Industrial kilns, reactors, pipelines, storage tanks, etc.
- Other industries: Boilers, chimneys, etc.
