High Alumina Composite Silicon Carbide Brick is a new-generation refractory product that combines the excellent properties of high alumina materials and silicon carbide. Designed for applications requiring high strength, superior thermal conductivity, and outstanding corrosion resistance, this brick is ideal for environments with extreme thermal and chemical wear—such as blast furnaces, hot blast stoves, gasifiers, and waste incineration systems.
Technical Specifications
| Property | Value |
|---|---|
| Al₂O₃ Content | ≥ 65% |
| SiC Content | 20–30% |
| Bulk Density | 2.60–2.75 g/cm³ |
| Apparent Porosity | ≤ 18% |
| Cold Crushing Strength | ≥ 60 MPa |
| Refractoriness Under Load (0.2 MPa) | ≥ 1650℃ |
| Thermal Shock Resistance (1100℃, water quenching) | ≥ 25 cycles |
| Thermal Conductivity (1000℃) | 6.5–8.0 W/m·K |
Key Features
High Strength and Structural Stability: Engineered with a robust microstructure that resists mechanical stress and deformation under high temperatures.
Excellent Thermal Shock Resistance: The combination of high alumina and SiC enhances the brick’s ability to withstand rapid heating and cooling cycles.
Superior Corrosion and Erosion Resistance: Silicon carbide imparts strong resistance to acidic slags, alkalis, and other aggressive agents in high-temperature environments.
Outstanding Thermal Conductivity: Enhances energy efficiency by accelerating heat transfer in furnaces and reactors.
Long Service Life: Enhanced durability results in fewer shutdowns and lower maintenance costs.
Typical Applications
Hot blast stove checker walls and partition walls
Blast furnace ceramic cups and tuyere areas
Carbon calciners and rotary kilns
Incinerator lining bricks
Coal gasifier linings
Cement kiln outlet and cooler zones
Waste-to-energy and biomass boilers
Production Details
The High Alumina Composite Silicon Carbide Brick is manufactured through a high-temperature sintering process that integrates selected high-purity alumina, premium silicon carbide, and special binders. The raw materials are proportioned precisely, mixed uniformly, shaped by hydraulic pressing, and then fired at temperatures exceeding 1400°C to ensure optimal density and bonding. This advanced production method ensures the brick offers exceptional resistance to slag erosion, thermal shock, and mechanical wear, making it ideal for harsh furnace environments and long service life requirements.
Packing and Shipping Details
Packing:
Bricks are packed in fumigated wooden crates with foam protection layers to prevent breakage. Each crate is securely strapped and labeled with product information.Shipping:
Available for global delivery via sea, land, or air freight. We work with certified logistics partners to ensure timely and safe delivery.
Frequently Asked Questions (FAQ)
Q1: What is the main application of High Alumina Composite Silicon Carbide Bricks?
These bricks are mainly used in high-temperature industrial furnaces, such as blast furnaces, hot blast stoves, waste incinerators, and gasifiers, where high resistance to wear, slag erosion, and thermal shock is essential.
Q2: What are the key benefits of using this type of brick?
The brick offers excellent thermal stability, strong resistance to chemical attack, high mechanical strength, and superior service life, especially in high-wear zones.
Q3. What is the typical service temperature range?
These bricks can typically operate in environments up to 1500°C, depending on the furnace design and working atmosphere.
Q4: Can the brick be customized according to specific requirements?
Yes, we offer customization of size, shape, and composition based on customer specifications and application needs.
Q5: How does this brick compare to traditional alumina bricks?
Mainly used in the iron and steel industry, particularly in torpedo tanks, ladles, mixers, and other molten metal handling equipment.
