Zhengzhou Zhongkeda Refractory Materials Co., Ltd
Corundum Castable
Corundum Castable Refractory - Ultra-High Performance Refractory Material for Extreme Industrial Applications
Corundum castable is a premium-grade refractory material designed for extreme-temperature environments and aggressive chemical conditions. Composed primarily of white fused alumina or tabular alumina (Al₂O₃ ≥ 90–99%), it offers outstanding thermal resistance, abrasion resistance, and chemical inertness. Ideal for high-demand applications in the steel, petrochemical, non-ferrous metallurgy, and waste incineration industries.
Characters of Corundum Castable Refractory:
•🔥Ultra-High Temperature Resistance | 1600°C–1800°C:Stable performance under extreme heat, with short-term tolerance up to 1900°C.
•🛡️Superior Wear Resistance | 3–5x Durable:Outperforms high-alumina castables in abrasion resistance, extending equipment lifespan.
•🧪Chemical & Slag Resistance:Resists acid/alkali corrosion, molten slag, and reducing atmospheres (e.g., CO/H₂).
•⏳Long Service Life | 50% Longer:Reduces downtime with 50%+ longer lifespan vs traditional refractories.
•🛠️Easy Installation & Curing:Castable, vibratable, or sprayable for complex shapes. Cures rapidly at room temperature (24–48h).
•🌐Wide Applications:Ideal for steel ladles, CFB boilers, gasifiers, waste incinerators, and petrochemical reactors.
Applications of Corundum Castable Refractory:
•🏭Steel industry: ladles, tundishes, EAF walls
•🔶Non-ferrous metallurgy: aluminum smelting furnaces
•⚗️Petrochemical industry: gasifiers, reformers
•🔥Waste incineration: lining for high-wear zones
•🧊Ceramics & glass: furnace bottoms and burner areas
Parameters of Corundum Castable Refractory:
Item
Low cement corundum castable
Ultra low cement corundum castable
No cement corundum castable
Al₂O₃ %
85
92
93
CaO %
1.8~2.3
1
0.1
Bulk density g/cm³(110ºC,16h)
3.21
3.28
3.32
Bulk density g/cm³(1500ºC,3h)
3.15
3.25
3.29
Linear change rate %(1500ºC,3h)
-0.5
-0.17
-0.02
Modulus of rupture MPa (1500ºC,3h)
24.1
22
37.6
Crushing strength MPa (1500ºC,3h)
120
157.5
197.9
Water quantity %
5.5~6.5
5
5
FAQ:
Q:What is the maximum service temperature of corundum castables?
A:Our high-purity 99% alumina castables can withstand temperatures up to 1800°C (3272°F), depending on the specific formulation and installation method.
Q:What types of alumina are used in your corundum castables?
A:We offer formulations with:
•White fused alumina (WFA)
•Tabular alumina (TA) Both types offer excellent mechanical strength, low porosity, and high refractoriness under load.
Q:Are your products available for export?
A:Yes! We are a China-based manufacturer and global supplier of corundum castables. We support OEM packaging, provide custom solutions, and offer fast logistics for our international B2B clients.
Q:Can your corundum castable be used in waste incineration systems?
A:Absolutely. Our specially formulated wear-resistant corundum castables are ideal for high-wear areas in incinerator linings, offering long service life and stable thermal performance.
