Corundum mullite refractory castables are high-performance monolithic refractories that blend the excellent properties of corundum and mullite. These castables are widely used in high-temperature applications where resistance to wear, thermal shock, and chemical corrosion is essential. The unique composition of corundum and mullite provides superior mechanical strength, high refractoriness, and stability at extreme temperatures, making them ideal for use in steel, cement, and other heavy-duty industrial furnaces.

Physicochemical Parameters

Corundum-Mullite Refractory Castable Technical Data

Item/Grade	XT-1	XT-2	XT-3
Al₂O₃ (%)	≥ 70	≥ 75	≥ 85
SiO₂ (%)	≤ 25	≤ 17	≤ 13
Fe₂O₃ (%)	≤ 1	≤ 1	≤ 1
Bulk Density (g/cm³)	≥ 2.7	≥ 2.8	≥ 2.9
0.2MPa Refractoriness Under Load (°C)	≥ 1450	≥ 1480	≥ 1500
Thermal Shock Resistance (Times, 900°C, Water-cooling)	≥ 25	≥ 25	≥ 25
Maximum Service Temperature (°C)	1550	1550	1600
Linear Dimensional Change (%)	≤ -0.3	≤ -0.2	≤ -0.2
Cold Crushing Strength (MPa) 110℃*24h	100	110	120
Cold Crushing Strength (MPa) 1100℃*3h	100	110	125
Cold Crushing Strength (MPa) 1400℃*3h	115	120	125
Modules of Rupture (MPa) 110℃*24h	15	15	18

Product Features

High Temperature Strength: Provides excellent performance under extreme heat conditions.
Superior Thermal Shock Resistance: Capable of withstanding rapid temperature changes without cracking or spalling.
Excellent Wear Resistance: Ideal for applications involving abrasive conditions such as in rotary kilns, ladles, and other industrial furnaces.
Low Creep Rate: Maintains structural integrity at high temperatures over extended periods.
Chemical Corrosion Resistance: Resistant to slag erosion and other corrosive substances.
Stable Performance: Withstands high temperatures and maintains stability, reducing the need for frequent repairs.

Applications

Corundum-mullite refractory castables are widely used in the lining of high-temperature industrial furnaces. Their key applications include:

Steel Industry: Suitable for ladles, blast furnace tapholes, and other areas subject to wear and thermal shock.
Cement Industry: Used in rotary kilns, transition zones, and coal injection pipes where high temperature and wear resistance are critical.
Glass Industry: Ideal for use in the inner lining of glass furnaces to improve energy efficiency and production quality.
Metallurgical Industry: Utilized in high-temperature furnaces for non-ferrous smelting and refining.
Petrochemical Industry: Applied in catalytic cracking reactors and other high-temperature environments.

Customization Services

We understand that every application has unique requirements. That’s why we offer the following customization options:

Custom Sizes: Tailored to fit your specific application and furnace specifications.
Special Shapes: Including custom shapes for complex geometries, ensuring precise fit and performance.
Performance Specifications: Custom formulations to meet specific temperature, pressure, and erosion conditions.

Packing and Shipping Details

Our Corundum Mullite Refractory Castables are packed to ensure safe and secure transportation:

Packaging Material: Durable and eco-friendly packaging to protect products during shipping.
Bulk Orders: Large orders are palletized for added security during transportation.
Custom Packaging: Available upon request to accommodate specific shipping or storage needs.

About Xintai Refractory

Xintai Refractory is a leading manufacturer specializing in high-quality refractory materials for the most demanding high-temperature applications. With over 20 years of experience, we offer durable products for industries such as steel, cement, glass, ceramics, and non-ferrous metals. Our solutions are engineered for performance, longevity, and reliability.

For more information or to request a quote, reach out to us today! We are committed to providing the highest quality refractory solutions to meet your industrial needs.