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High-Quality Silicon Carbide Bricks (SiC) from China Suppliers - Durable Furnace Solutions from Trusted Factory
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℃) w/(m·k) | 13.2 | 12 | / |
| Cold Crushing Strength (MPa) | ≥110 | ≥100 | ≥180 |
| Thermal Shock Stability (1100℃ 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
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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 for 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-temperature industrial environments such as blast furnaces and electric arc furnaces.
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Q What is the difference between SiC bricks and Si₃N₄-SiC bricks?SiC bricks have a higher SiC content (≥80–88%) and offer excellent thermal conductivity and high cold crushing strength (≥100–110 MPa). Si₃N₄-SiC bricks combine silicon nitride and silicon carbide, offering superior cold crushing strength (≥180 MPa) and lower apparent porosity (≤16%), making them better suited for applications requiring higher mechanical strength.
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Q Which industries are SiC refractory bricks most suitable for?SiC refractory bricks are widely used across the metallurgical, ceramic, chemical, and energy industries. Typical applications include blast furnace linings, kiln furniture, chemical reactor linings, coal gasifier linings, and waste incinerators, among others.
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Q How do SiC bricks perform in corrosive environments?SiC bricks exhibit strong resistance to both acidic and alkaline corrosive media. This makes them highly suitable for chemical reactors, acid-alkali storage tanks, flue gas treatment systems, and other equipment exposed to aggressive chemical environments.
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Q What is the thermal shock stability of SiC bricks?Standard SiC bricks can withstand ≥50 thermal shock cycles at 1100°C water-cooling conditions, while Si₃N₄-SiC bricks offer ≥30 cycles. The low thermal expansion coefficient of SiC ensures minimal structural damage from rapid temperature changes, extending the service life of furnace linings.
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Q How can I get a customized quote for SiC refractory bricks?You can submit your inquiry directly through the contact form above. Please provide details such as your required brick type, quantity, application environment, and any special specifications. Our team will respond promptly with a tailored quotation.