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Corundum Fire Brick
Brand: HongTai Refractory
Category: Corundum Brick
Al2O3: 85-98%
Working temperature: 1800℃
Payment Terms: T/T, Credit Cardse, E-Checking, Alibaba Trade Assurance
Product Information
Introduction
Technical Data
Properties
Applications
Introduction
Corundum fire bricks, also known as corundum refractory bricks, are high-grade refractory products made primarily from corundum (Al₂O₃) and other minor components. Corundum, a naturally occurring form of aluminum oxide, is characterized by its extreme hardness, stability, and excellent resistance to high temperatures, chemical corrosion, and wear.
Technical Data
Corundum bricks index:
Fused zirconium corundum brick index:
| ltem | Ultra Purity Corundum Brick | 99 Corundum Brick | 90 Corundum Brick | Corundum-Mullite Brick |
| Al2O3% | ≥99.3 | ≥98.5 | ≥90 | ≥80 |
| SiO2% | ≤0.15 | ≤0.3 | ≤8.5 | ≤18.5 |
| Fe2O3% | ≤0.1 | ≤0.2 | ≤0.2 | ≤0.3 |
| Bulk density, g/cm3 | ≥3.25 | ≥3.25 | ≥3.1 | ≥2.9 |
| Apparent porosity, % | ≤18 | ≤18 | ≤18 | ≤18 |
| Cold crushing strength, MPa | ≥100 | ≥100 | ≥120 | ≥120 |
| Refractoriness under load, ℃(0.2MPa,0.6%) | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
| Reheating linear change rate, %(1600℃ x 8h) | -0.2 | -0.2 | 0.2 | 0.2 |
| Thermal expansion coefficient, x 10-6 (Room temp. to 1300’C) | 8.1 | 8.1 | 8.1 | 7.6 |
| ltem | AZS-33 | AZS-33 | AZS-36 | AZS-36 | AZS-41 | AZS-41 |
| Y | H | Y | H | Y | H | |
| Al2O3≥ | 50 | 50.5 | 48 | 49 | 45 | 45.5 |
| ZrO2≥ | 32.0 | 32.0 | 35.0 | 35.0 | 40.0 | 40.0 |
| SiO2≤ | 15.0 | 16.0 | 13.5 | 13.5 | 13.0 | 12.0 |
| Na2O≤ | 1.5 | 1.5 | 1.4 | 1.4 | 1.3 | 1.3 |
| BD, PT.QX ≥ | 3.40 | 3.30 | 3.45 | 3.40 | 3.55 | 3.50 |
| BD, MS≤ | 3.50 | 3.45 | 3.60 | 3.55 | 3.70 | 3.65 |
| BD, WS≤ | 3.60 | 3.55 | 3.70 | 3.65 | 3.80 | 3.75 |
Properties
- High refractoriness
- High thermal stability
- Excellent chemical resistance
- High mechanical strength
- Good thermal shock resistance
- High abrasion resistance
- Low porosity
Applications
| Applications | Detailed Info |
|---|---|
| Glass Industry | Glass melting furnaces and regenerators |
| Iron and Steel Industry | Steel ladles, tundishes, and electric arc furnaces |
| Petrochemical Industry | Cracking furnaces, reforming furnaces, and ethylene pyrolysis furnaces |
| Ceramics and Porcelain | Tunnel kilns and shuttle kilns for firing |
| Non-Ferrous Metal Industry | Melting and holding furnaces for aluminum, copper, and other metals |
| Cement Industry | Rotary kilns, preheaters, and coolers |
| Incineration Plants | Waste incineration plants for high temperatures and corrosive environments |
