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Low Porosity Fire Clay Brick from China Suppliers - High-Quality Refractory Material Factory
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 (Grade A) | Low-porosity Clay Brick (Grade B) | 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
1
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.
2
Glass & Ceramic Industry
◎ Kiln linings for glass melting furnaces and ceramic sintering kilns. Low porosity prevents glass liquid penetration and avoids product contamination.
3
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.
4
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
Q
What is the maximum service temperature of low-porosity clay bricks?
Low-porosity clay bricks offer a refractoriness under load (0.2 MPa, 0.6%) of ≥1500°C for Grade A, making them suitable for continuous high-temperature industrial operations in metallurgy, glass, and chemical industries.
Q
How does low porosity improve the performance of refractory bricks?
Lower porosity means a denser microstructure, which reduces the penetration of molten slag, glass liquid, and corrosive gases into the brick body. This directly extends service life, improves thermal efficiency, and reduces the risk of structural failure under thermal stress.
Q
What is the difference between low-porosity clay bricks and common clay bricks?
Compared to common clay bricks, low-porosity clay bricks feature significantly lower apparent porosity (≤12% vs ≤22%), higher bulk density (≥2.37 g/cm³ vs ≥2.15 g/cm³), and much greater cold crushing strength (≥70 MPa vs ≥30 MPa). These properties result in superior resistance to erosion, thermal shock, and structural deformation at elevated temperatures.
Q
Which industries are low-porosity clay bricks most suitable for?
These bricks are widely used across the metallurgical industry (blast furnaces, coke ovens, ladles), the glass and ceramic industry (melting furnaces, sintering kilns), and other industrial sectors including chemical reactors, thermal power plant boilers, and waste incinerators — anywhere demanding high-temperature stability and erosion resistance.
Q
Can the products be customized to specific dimensions or specifications?
Yes. We support both standard and semi-customized requirements. Our technical team can work with your specific application needs to provide bricks in custom dimensions, shapes, or performance grades. Please contact us with your project details for a tailored solution.
Q
How do you ensure product quality and consistency?
We implement strict quality control at every stage of production — from raw material screening and process monitoring to finished product testing. Each batch complies with international refractory standards and is shipped with a comprehensive quality inspection report. Our team also provides professional technical support and after-sales service throughout the project lifecycle.