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Low Porosity Fire Clay Brick - High-Quality Refractory Material from China Suppliers & 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 |
| g/cm³ Bulk Density | ≥2.37 | ≥2.30 | ≥2.15 |
| MPa Cold Crushing Strength | ≥70 | ≥60 | ≥30 |
| % Permanent Linear Change 1400℃ x 2h | -0.1/+0.05 | -0.2/+0.0 | -0.4/+0.1 |
| ℃（0.2MPa,0.6%） Refractoriness Under Load | ≥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 are the primary benefits of low-porosity clay bricks compared to common clay bricks?
Low-porosity clay bricks have a much denser structure (porosity ≤12-15% compared to ≤22% in common clay bricks). This dense structure significantly improves cold crushing strength, thermal insulation, and resistance to chemical slag erosion, resulting in a longer service life for industrial kilns.
Why is low porosity critical in glass and ceramic furnace linings?
Low porosity prevents molten glass, corrosive vapors, and slag from penetrating into the brick structure. This effectively avoids structural damage to the kiln lining and prevents chemical contamination of the glass or ceramic products during the manufacturing process.
What temperature range can these refractory bricks withstand?
These bricks feature a high refractoriness under load of ≥1470°C to ≥1500°C (at 0.2MPa, 0.6%). They are designed to maintain structural stability and resist deformation under continuous high-temperature operations.
Are custom sizes and shapes available for specific kiln configurations?
Yes, while standard shapes are readily available, we can manufacture semi-customized and customized refractory bricks based on your detailed technical drawings and furnace lining requirements.
How is the quality of these bricks verified?
We maintain strict quality control standards starting from raw material selection to firing and final testing. Every batch of refractory bricks is tested for key indicators like porosity, bulk density, and crushing strength, and is accompanied by a formal quality inspection report.