Mullite insulation brick has excellent fire resistance and high temperature stability. They can maintain good structure and function at high temperatures. The most prominent feature of mullite insulation bricks is that they can be directly exposed to flames. This is a performance that other types of insulation bricks are difficult to achieve.
Mullite Insulation Brick for Sale
Types of Mullite Insulation Bricks for Sale
KR-23 (JM-23)
|
KR-26 (JM-26)
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KR-28 (JM-28)
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KR-30 (JM-30)
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Technical Index of Kerui Mullite Insulation Brick
Below are the specific parameters of mullite insulation bricks. Kerui values the needs of every customer, so if you need customized products, please tell Kerui Refractory.
| Item/Grade | KR-23 (JM-23) | |||
|---|---|---|---|---|
| Type | A | B | C | D |
| Al2O3, % | ≥42 | ≥42 | ≥45 | ≥48 |
| Fe2O3, % | ≤1.2 | ≤1.2 | ≤1.0 | ≤1.0 |
| Bulk Density, g/cm³ | 0.55 | 0.6 | 0.8 | 1.00 |
| Reheating Linear Change, % | ≤-0.5 | ≤-0.55 | ≤-0.4 | ≤-0.3 |
| Temperature*12h | 1230℃ | 1260℃ | 1300℃ | 1300℃ |
| Cold Crushing Strength, MPa | ≥1.2 | ≥1.5 | ≥2.3 | ≥3 |
| Thermal Conductivity 350℃, W/(m·K) | 0.17 | 0.19 | 0.24 | 0.31 |
| Item/Grade | KR-26 (JM-26) | |||
|---|---|---|---|---|
| Type | A | B | C | D |
| Al2O3, % | ≥54 | ≥55 | ≥56 | ≥56 |
| Fe2O3, % | ≤0.9 | ≤0.9 | ≤1.0 | ≤1.0 |
| Bulk Density, g/cm³ | 0.7 | 0.8 | 0.9 | 1.0 |
| Reheating Linear Change, % | ≤-1 | ≤-0.65 | ≤-0.5 | ≤-0.5 |
| Temperature*12h | 1400℃ | |||
| Cold Crushing Strength, MPa | ≥2 | ≥2.3 | ≥2.8 | ≥3.2 |
| Thermal Conductivity 350℃, W/(m·K) | 0.21 | 0.25 | 0.3 | 0.32 |
| Item/Grade | KR-28 (JM-28) | KR-30 (JM-30) | |||
|---|---|---|---|---|---|
| Type | A | B | C | A | B |
| Al2O3, % | ≥64 | ≥65 | ≥66 | ≥72 | ≥72 |
| Fe2O3, % | ≤0.75 | ≤0.65 | ≤0.65 | ≤0.55 | ≤0.55 |
| Bulk Density, g/cm³ | 0.8 | 0.9 | 1.0 | 1.0 | 1.1 |
| Reheating Linear Change, % | ≤-1 | ≤-0.8 | ≤-0.7 | ≤-0.9 | ≤-0.7 |
| Temperature*12h | 1500℃ | 1600℃ | |||
| Cold Crushing Strength, MPa | ≥2.3 | ≥2.8 | ≥3.3 | ≥3.0 | ≥3.5 |
| Thermal Conductivity 350℃, W/(m·K) | 0.28 | 0.32 | 0.34 | 0.4 | 0.43 |
Features of Kerui Mullite Insulation Brick
Low Thermal Conductivity
As you can see from the product pictures, mullite insulating refractory bricks have a porous structure. Because of this, using mullite insulation bricks to build high-temperature kilns can store heat very well. In long-term high-temperature working environments, mullite insulation bricks help provide a long-lasting and uniform heat environment for the kiln. Especially in intermittent operation projects, the thermal energy is significantly improved.
High Working Temperature
Kerui mullite insulation bricks use high-purity raw materials, and their manufacturing process does not produce other impurities. This results in its excellent fire resistance. Even in extreme high-temperature working environments, mullite insulation bricks can still maintain stable and excellent performance. In industrial applications, the high purity of mullite insulation bricks means longer service life, higher thermal stability and lower maintenance costs.
High Temperature Strength
Mullite insulation bricks form a stable crystal structure and uniform microstructure inside. These qualities bring excellent high temperature resistance and can effectively resist external pressure. It provides a reliable solution for various high temperature environments. Explore more information about this product on Pinterest board.
Good Chemical Properties
Mullite insulation bricks use high-purity Al2O3, so they have good chemical corrosion resistance. Even in the face of strong acidic slag erosion, mullite insulation bricks can still maintain good performance.
Applications of Mullite Insulation Fire Brick
Insulation lining of high temperature kilns
In industrial kilns such as hot air furnaces, hot air curtain machines, regenerative electric furnaces, continuous heating furnaces, ceramic roller kilns, electric porcelain drawer kilns, glass crucible kilns, tunnel kilns, etc., mullite insulation bricks are used as ideal materials for furnace walls and furnace roofs. It can withstand high temperatures up to 1600-1700°C, which effectively reduce heat loss, improve energy utilization efficiency, and ensure long-term stable operation of the kiln.
Other high temperature industries
In the production processes of steel and metallurgical industries, non-ferrous metal industries, ceramics, glass, cement, etc., its excellent insulation performance can ensure the uniformity and stability of the temperature in the kiln. Thereby. Kerui mullite brick helps to improve product quality and production efficiency.
Professional Mullite Insulation Brick Manufacture in China
Superior Quality
Kerui refractory bricks have precise and consistent appearance and size. There is a strict quality control system here. So as to speed up your masonry speed and improve construction efficiency. More importantly, the precise size can ensure the close fit between the brick joints, thereby improving the overall stability and extending the service life of the kiln.
Technical Guidance
Kerui engineers and business managers provide professional technical support to customers. As you can see from the picture, Kerui provided customers with on-site installation guidance some time ago. In order to reduce communication costs, Kerui also supports online technical guidance.
Considerate Service
One-to-one service can improve service quality and answer any questions for you throughout the process, including product consultation, price comparison, production and delivery progress tracking, etc.
High Reputation
After more than 20 years of development, Kerui has accumulated a good reputation for its product quality. At present, we have developed many long-term cooperative customers, including..
