Category
Corundum Brick
Classification:
Product Introduction
Product Details
Product Overview:
Corundum bricks refer to refractory brick products with an Al2O3 content greater than 90%, primarily composed of corundum as the main crystalline phase. They have high compressive strength at room temperature (up to 140 MPa) and a high load softening temperature (greater than 1700°C).
Product Details:
Characteristics of corundum bricks: Corundum bricks have resistance to acidic and alkaline chemical properties, slag, metals, and glass melts. They can achieve good performance in both oxidizing and reducing atmospheres at high temperatures.
The basic raw materials for corundum bricks include sintered corundum and electrofused corundum, which are made into sintered corundum bricks and electrofused corundum bricks, respectively. Other mineral raw materials can also be added to form composite materials, such as zircon corundum bricks, chrome corundum bricks, and titanium corundum bricks, to improve their performance and adapt to various usage environments.
Corundum bricks are mainly used in high-temperature wear-resistant parts of industrial kilns, such as sliding rail bricks for metallurgical furnaces, steel discharge troughs for step-type heating furnaces, linings for waste incineration furnaces, linings for petrochemical industry kilns, bottoms of rolling mills, and material channels for glass kilns.
Physical and Chemical Indicators:
| Item | High 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 | ≥3.15 | ≥3.25 | ≥3.1 | ≥2.9 |
| Apparent Porosity % | <18 | <18 | <18 | <18 |
| Room Temperature Compressive Strength MPa | >100 | >100 | >120 | >120 |
| Load Softening Start Temperature ℃ (0.2MPa, 0.6%) | >1700 | >1700 | >1700 | >1700 |
| Reburning Linear Change Rate % (1600℃ x 8h) | -0.2 | -0.2 | 0.2 | 0.2 |
| Thermal Expansion Coefficient x 10-6 (Room temp. to 1300'℃) | 8.1 | 8.1 | 8.1 | 7.6 |
China Corundum Brick: High-Performance Refractory Solution
Composition & Key Features:
China Corundum Brick is a high-alumina refractory material with 99% Al₂O₃ content, ensuring exceptional high-temperature resistance (up to 1800°C) and chemical corrosion resistance. Its low porosity and dense structure minimize penetration of molten materials, while thermal shock resistance guarantees stability under rapid temperature fluctuations.
Core Benefits:
- Extreme Durability: Withstands harsh environments in metallurgical furnaces, oil refineries, and power plants.
- Extended Service Life: Resists erosion from slag, alkalis, and corrosive gases, reducing maintenance costs.
- Versatile Applications: Suitable for incinerators, blast furnaces, glass kilns, and non-ferrous metal smelting.
Technical Advantages:
- Fused Manufacturing Process: Enhances density and mechanical strength for heavy-duty use.
- White Corundum Option: High-purity variant for ultra-high-temperature scenarios (e.g., steelmaking).
- Customizable: Available in shapes like bricks, blocks, or precast shapes to fit industrial needs.
Why Choose China Corundum Brick?
Engineered for longevity and efficiency, it outperforms standard firebricks in energy-intensive industries, ensuring operational safety and cost savings over time. Perfect for high-wear thermal environments requiring reliable refractory solutions.
Keywords:
customized Zirconium Corundum Brick
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