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Low Porosity Fire Clay Brick - Quality Refractory Materials from China Suppliers and 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 | 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
What is the maximum service temperature of low-porosity clay bricks?
Low-porosity clay bricks can withstand a refractoriness under load (0.2 MPa, 0.6%) of ≥1500°C, making them suitable for sustained high-temperature industrial applications such as blast furnaces, glass melting furnaces, and ceramic sintering kilns.
How does low porosity improve the performance of refractory bricks?
A lower porosity (≤12–15%) means a denser microstructure, which reduces heat loss, prevents penetration of molten slag or glass liquid, and improves resistance to chemical erosion — all of which extend the service life of furnace linings significantly.
What industries are low-porosity clay bricks suitable for?
These bricks are widely used across metallurgy (blast furnaces, coke ovens, steelmaking ladles), glass and ceramic manufacturing (melting furnaces, sintering kilns), chemical processing (reactors), thermal power generation (boilers), and waste incineration facilities.
What is the difference between low-porosity clay bricks and common clay bricks?
Low-porosity clay bricks have higher Al₂O₃ content (≥45%), lower apparent porosity (≤12%), higher bulk density (≥2.37 g/cm³), and greater cold crushing strength (≥70 MPa) compared to common clay bricks, resulting in superior thermal and mechanical performance.
Can the products be customized to specific sizes or requirements?
Yes. Our low-porosity clay bricks are compatible with both standard and semi-customized requirements, making them adaptable to a wide range of furnace designs and industrial configurations. Please contact us with your specifications for a tailored solution.
How is product quality guaranteed?
We implement strict quality control from raw material screening through to finished product testing. Every batch complies with international refractory standards and is accompanied by a full quality inspection report. Our team also provides professional technical support and after-sales service.