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Premium Silicon Carbide Bricks (SiC) Factory in China - Trusted Suppliers for Industrial Furnaces
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 (≥88%) | SiC Brick (≥80%) | 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
What is the maximum operating temperature for SiC bricks?
SiC bricks can withstand continuous operating temperatures up to 1600°C and short-term peak temperatures of 1700°C, making them one of the most thermally stable refractory materials available for industrial furnace applications.
What is the difference between SiC Brick and Si₃N₄-SiC Brick?
SiC bricks contain a higher proportion of silicon carbide (≥80–88%) and offer excellent thermal conductivity and high refractoriness under load. Si₃N₄-SiC bricks incorporate at least 18% silicon nitride, which significantly boosts cold crushing strength (≥180 MPa) and provides superior resistance to oxidation and thermal shock — ideal for demanding structural applications.
Which industries are SiC refractory bricks most commonly used in?
SiC refractory bricks are widely used across the metallurgical, ceramic, chemical, and energy industries. Key applications include blast furnace linings, kiln furniture, chemical reactor linings, coal gasifiers, and waste incinerators — anywhere that requires high-temperature stability, wear resistance, and corrosion protection.
How do SiC bricks compare to traditional refractory bricks in terms of wear resistance?
SiC bricks feature a dense microstructure and high hardness that far exceeds conventional refractory bricks. They effectively resist material friction and impact, significantly reducing wear loss and extending service life — lowering overall maintenance costs and downtime for industrial operations.
Can SiC bricks resist both acidic and alkaline corrosion?
Yes. SiC refractory bricks demonstrate strong resistance to erosion from both acidic and alkaline media, as well as other aggressive chemical environments. This makes them an excellent choice for chemical reactors, acid-alkali storage tanks, and flue gas treatment systems where chemical corrosion is a primary concern.
How do I request a custom quote for SiC refractory bricks?
Simply fill in the contact form above with your project details — including required dimensions, quantities, operating temperature range, and application type. Our technical team will review your requirements and provide a tailored quotation promptly.