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Premium Silicon Carbide Bricks (SiC) for Industrial Furnaces - China Suppliers & Factory Direct Quality
Core Advantages
Outstanding High-Temperature Resistance
Capable of withstanding continuous operating temperatures up to 1600°C and short-term temperatures of 1700°C, maintaining structural integrity without deformation even in extreme high-heat environments, which far outperforms traditional refractory bricks.
Excellent Wear & Abrasion Resistance
Featuring high hardness and a dense microstructure, it effectively resists material friction and impact, reducing wear loss significantly and extending service life compared to conventional refractory products.
Strong Corrosion Resistance
Resists erosion from acidic, alkaline and other corrosive media, suitable for harsh working conditions in chemical, metallurgical and other industries.
High Mechanical Strength
Good compressive strength and flexural strength, not easy to crack or break during transportation and use, ensuring safe and stable operation of equipment.
Low Thermal Expansion Coefficient
Small volume change under temperature fluctuation, avoiding structural damage caused by thermal shock, improving the reliability of furnace linings and other equipment.
Product Parameters
| Item | SiC Brick | Si₃N₄-SiC Brick | |
|---|---|---|---|
| SiC % | ≥88 | ≥80 | ≥72 |
| Si₃N₄ % | / | / | ≥18 |
| Bulk Density (g/cm³) | ≥2.60 | ≥2.58 | 2.60–2.70 |
| Apparent Porosity (%) | ≤17 | ≤18 | ≤16 |
| Thermal Conductivity (1200°C) w/(m·k) | 13.2 | 12 | / |
| Cold Crushing Strength (MPa) | ≥110 | ≥100 | ≥180 |
| Thermal Shock Stability (1100°C cooling, times) | ≥50 | ≥40 | ≥30 |
| Refractoriness Under Load (0.2MPa, 0.6%) | 1700 | 1700 | / |
Detailed Application Scenarios
1
Metallurgical Industry
◎ Widely applied in blast furnace hearths, tuyere zones, converter linings, and electric arc furnace sidewalls & bottoms. It is suitable for the smelting of iron, steel, and non-ferrous metals (copper, aluminum, zinc, etc.), providing reliable resistance to high temperatures, wear, and molten metal erosion.
2
Ceramic Industry
◎ Used as kiln furniture (roller bars, saggers) and kiln linings in ceramic firing equipment (tunnel kilns, shuttle kilns). It can endure high-temperature baking and frequent thermal cycles, ensuring consistent quality of ceramic products during production.
3
Chemical Industry
◎ Ideal for linings of chemical reactors, acid-alkali storage tanks, flue gas treatment systems, and catalyst supports. It resists corrosion from various chemical media, ensuring long-term safe and stable operation of chemical equipment.
4
Energy Industry
◎ Applied in linings of coal gasifiers, biomass pyrolysis furnaces, and waste incinerators. It adapts to harsh working conditions (high temperature, high pressure, dust wear), enhancing the operational efficiency and service life of energy-related equipment.
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
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Q What is the maximum operating temperature of SiC bricks?SiC bricks can withstand continuous operating temperatures up to 1600°C and short-term peak temperatures of 1700°C, making them ideal for extreme high-heat industrial environments such as blast furnaces, kilns, and gasifiers.
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Q What is the difference between SiC Brick and Si₃N₄-SiC Brick?SiC bricks contain a higher SiC content (≥88% or ≥80%) and offer excellent thermal conductivity and high refractoriness under load. Si₃N₄-SiC bricks incorporate silicon nitride (≥18%) as a bonding phase, resulting in superior cold crushing strength (≥180 MPa) and enhanced corrosion resistance, making them especially suitable for demanding metallurgical and chemical applications.
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Q In which industries are SiC refractory bricks most commonly used?SiC refractory bricks are widely used across the metallurgical industry (blast furnaces, converters, electric arc furnaces), ceramic industry (tunnel kilns, shuttle kilns, kiln furniture), chemical industry (reactors, storage tanks, flue gas systems), and energy industry (coal gasifiers, biomass pyrolysis furnaces, waste incinerators).
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Q How does SiC brick perform in terms of wear and abrasion resistance?Thanks to its high hardness and dense microstructure, SiC brick effectively resists material friction and impact. This significantly reduces wear loss compared to conventional refractory products, extending the service life of furnace linings and industrial equipment and reducing maintenance costs.
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Q Can SiC bricks resist chemical corrosion from acids and alkalis?Yes. SiC bricks exhibit strong resistance to erosion from both acidic and alkaline media, as well as other corrosive substances. This makes them highly suitable for use in chemical reactors, acid-alkali storage tanks, and flue gas treatment systems in the chemical and metallurgical industries.
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Q How do I get a custom quote for SiC refractory bricks?You can submit your inquiry directly through the contact form above by providing details such as the required brick type, quantity, application environment, and any specific dimensional or performance requirements. Our team will respond promptly with a tailored quotation.