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Low Porosity Fire Clay Brick Supplier from China - High-Quality Refractory Material from 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
Q1: What is the main difference between low-porosity clay bricks and common clay bricks?
Low-porosity clay bricks feature a denser internal structure with apparent porosity strictly controlled below 12%-15%, compared to 22% in common clay bricks. This significantly improves their cold crushing strength, thermal insulation capability, and erosion resistance.
Q2: Why is low porosity important in glass and ceramic kilns?
Low porosity prevents corrosive media, chemical slag, and molten glass liquid from penetrating the brick lining. This keeps the kiln structure stable and avoids contamination of the glass or ceramic products during manufacturing.
Q3: What temperature limit can low-porosity clay bricks withstand under load?
Our low-porosity clay bricks offer superior high-temperature performance, with refractoriness under load values ranging from ≥1470℃ to ≥1500℃, ensuring structural integrity under long-term high-heat operation.
Q4: Are these bricks suitable for customized industrial specifications?
Yes. While we supply standard sizes, our low-porosity clay bricks are highly compatible with various industrial settings and can adapt to semi-customized construction requirements for easy installation.
Q5: How do you verify the quality of each batch of refractory bricks?
We perform strict quality control throughout the production process, from sourcing raw materials to testing final products. Every batch is certified to comply with international refractory standards and comes with a detailed quality inspection report.