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China Alumina Bubble Brick for Industrial Furnaces - Lightweight Refractory Material from Trusted Suppliers and Factory
Core Advantages
Superior Thermal Insulation
The unique hollow sphere structure minimizes thermal conductivity, effectively reducing heat loss in high-temperature equipment. Compared to traditional refractory bricks, cutting operational costs significantly.
Lightweight & High Strength
With low bulk density (1.4-1.7g/cm³), it eases equipment load and simplifies installation. Meanwhile, high alumina purity ensures excellent mechanical strength and wear resistance, avoiding cracking under extreme temperature changes.
Exceptional High-Temp Stability
Made of high-purity alumina (Al₂O₃ ≥90%), it can withstand continuous temperatures up to 1800°C and resist corrosion from molten metal, slag, and chemical media, extending the service life of furnace linings.
Product Parameters
| Item | Alumina Bubble Brick | ||
|---|---|---|---|
| Al₂O₃ % | ≥85 | ≥90 | ≥99 |
| Fe₂O₃ % | ≤0.20 | ≤0.20 | ≤0.20 |
| Bulk Density (g/cm³) | 1.4-1.7 | 1.4-1.7 | 1.4-1.7 |
| Cold Crushing Strength (MPa) | ≥12 | ≥10 | ≥9 |
| Refractoriness Under Load (℃) (0.2MPa, 0.6%) |
≥1650 | ≥1700 | ≥1700 |
| Permanent Linear Change 1600℃ x 3h |
±0.3 | ±0.3 | ±0.3 |
| Coefficient of Thermal Expansion (room temp - 1300℃) |
~7.8 | ~0.8 | ~8.6 |
| Thermal Conductivity | ≤0.80 | ≤1.30 | ≤1.50 |
Detailed Application Scenarios
01
Metallurgical Industry
Widely used in lining of blast furnace hot blast stoves, electric arc furnaces, and ladle tundishes. It resists high-temperature erosion from molten steel and slag, improves thermal insulation effect, and ensures stable production of metallurgical equipment.
02
Ceramic & Glass Industry
Suitable for kiln linings in ceramic tile, sanitary ware, and glass melting furnaces. Its excellent thermal insulation reduces heat loss during firing, maintains uniform furnace temperature, and enhances product quality while saving energy.
03
Petrochemical Industry
Applied in linings of catalytic cracking units, reforming furnaces, and hydrogenation reactors. It withstands high temperatures and chemical corrosion, ensures safe operation of equipment, and extends maintenance cycles.
04
Other High-Temp Equipment
Also used in waste incinerators, industrial boilers, and solar thermal power generation equipment. It adapts to complex high-temperature environments, improves equipment efficiency, and reduces environmental pollution.
Conclusion & Inquiry
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions (FAQ)
Q:
What is the maximum continuous temperature Alumina Bubble Bricks can withstand?
A:
Made of high-purity alumina (Al₂O₃ ≥90%), they can withstand continuous temperatures up to 1800°C.
Q:
How does the hollow sphere structure benefit industrial applications?
A:
The unique hollow sphere structure minimizes thermal conductivity, effectively reducing heat loss in high-temperature equipment and cutting operational costs.
Q:
Are Alumina Bubble Bricks heavy and difficult to install?
A:
No, they have a low bulk density of 1.4-1.7g/cm³, which is lightweight. This eases equipment load and simplifies the installation process.
Q:
Do these bricks resist chemical corrosion?
A:
Yes, they offer exceptional high-temperature stability and resist corrosion from molten metal, slag, and chemical media.
Q:
Which industries commonly use Alumina Bubble Bricks?
A:
They are widely used in the metallurgical, ceramic, glass, and petrochemical industries, as well as in other high-temp equipment like waste incinerators and industrial boilers.