+86-15527482889
Hot Products
0102030405
High-Quality Low Porosity Fire Clay Bricks from China Suppliers and Factory for Reliable Refractory Solutions
Core Advantages
Low Porosity & Excellent Heat Insulation
Dense structure with porosity ≤18% effectively reduces heat loss, improves energy efficiency of equipment, and maintains stable temperature in high-heat environments.
Superior High-Temp Resistance
Maintaining structural integrity without deformation even under long-term high-temperature operation.
Strong Erosion Resistance
Resists erosion from flue gas, slag and chemical media, significantly extending the service life of furnace linings and reducing maintenance costs.
Wide Applicability
Compatible with multiple industrial scenarios, easy to install and construct, suitable for both standard and semi-customized requirements.
Product Parameters
| Item | Low-porosity Clay Brick | Common Clay Brick | |
|---|---|---|---|
| Al₂O₃ % | ≥45 | ≥42 | ≥42 |
| Fe₂O₃ % | ≤1.2 | ≤1.5 | ≤1.8 |
| Apparent Porosity % | ≤12 | ≤15 | ≤22 |
| Bulk Density (g/cm³) | ≥2.37 | ≥2.30 | ≥2.15 |
| Cold Crushing Strength (MPa) | ≥70 | ≥60 | ≥30 |
| Permanent Linear Change % (1400℃ × 2h) | -0.1/+0.05 | -0.2/+0.0 | -0.4/+0.1 |
| Refractoriness Under Load ℃ (0.2MPa, 0.6%) | ≥1500 | ≥1470 | ≥1400 |
Detailed Application Scenarios
-
Metallurgical Industry
◎ Lining of blast furnace hot blast stoves, coke ovens, and steelmaking ladles. Resists high-temperature gas and molten steel erosion, ensuring stable production.
-
Glass & Ceramic Industry
◎ Kiln linings for glass melting furnaces and ceramic sintering kilns. Low porosity prevents glass liquid penetration and avoids product contamination.
-
Other Industrial Fields
◎ Lining of chemical reactors, thermal power plant boilers, and waste incinerators. Adapts to complex high-temperature and corrosive environments, reducing maintenance costs.
-
Quality Assurance
◎ We implement strict quality control throughout the production process, from raw material screening to finished product testing. Each batch of products complies with international refractory standards and is accompanied by a quality inspection report. We also provide professional technical support and after-sales service to solve your application problems.
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
-
What is the apparent porosity of low-porosity clay bricks, and why does it matter?
Low-porosity clay bricks have an apparent porosity of ≤12% (Grade A) or ≤15% (Grade B), compared to ≥22% for common clay bricks. Lower porosity means a denser structure, which reduces heat loss, prevents penetration by molten materials or corrosive gases, and significantly extends the service life of furnace linings.
-
What is the maximum service temperature for low-porosity clay bricks?
Low-porosity clay bricks have a Refractoriness Under Load (RUL at 0.2MPa, 0.6% deformation) of ≥1500°C for the premium grade, making them suitable for sustained high-temperature environments such as blast furnace hot blast stoves, glass melting furnaces, and industrial boilers.
-
Which industries are low-porosity clay bricks most commonly used in?
They are widely used across the metallurgical industry (blast furnace stoves, coke ovens, steelmaking ladles), glass and ceramic industry (melting furnaces, sintering kilns), as well as chemical reactors, thermal power plant boilers, and waste incinerators — anywhere demanding high-temperature stability and erosion resistance.
-
How do low-porosity clay bricks compare to common clay bricks in terms of strength?
Low-porosity clay bricks offer significantly higher Cold Crushing Strength — ≥70 MPa (Grade A) versus only ≥30 MPa for common clay bricks. This superior mechanical strength allows them to withstand greater operational stresses and reduces the risk of structural failure in demanding furnace environments.
-
Do you provide customized sizes or shapes for special project requirements?
Yes. Our low-porosity clay bricks are compatible with both standard and semi-customized requirements. We offer professional technical support to help determine the appropriate specifications for your specific furnace design, and can accommodate special dimensional or compositional requests upon inquiry.
-
What quality certifications and testing procedures are applied to your products?
Every batch undergoes strict quality control from raw material screening through to finished product testing. All products comply with international refractory standards and are shipped with a full quality inspection report. Our after-sales technical team is also available to support installation, commissioning, and any application challenges you may encounter.