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High-Quality Silicon Carbide Bricks from China Suppliers – Durable SiC Bricks Manufacturer and 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°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
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 up to 1700°C. This makes them ideal for high-temperature industrial applications such as blast furnace linings, ceramic kilns, and energy conversion equipment.
Q
What is the difference between SiC Brick and Si₃N₄-SiC Brick?
SiC bricks have a higher SiC content (≥88% or ≥80%) and offer outstanding thermal conductivity and refractoriness under load up to 1700°C. Si₃N₄-SiC bricks contain at least 18% Si₃N₄ alongside ≥72% SiC, delivering superior cold crushing strength (≥180 MPa) and lower apparent porosity (≤16%), making them excellent for applications requiring higher mechanical strength.
Q
Which industries are SiC refractory bricks most commonly used in?
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, acid-alkali storage tanks), and the energy industry (coal gasifiers, biomass pyrolysis furnaces, waste incinerators).
Q
How does the thermal shock stability of SiC bricks compare to other refractory materials?
SiC bricks demonstrate excellent thermal shock stability. Standard SiC bricks can withstand ≥50 thermal shock cycles (1100°C water cooling), while Si₃N₄-SiC bricks offer ≥30 cycles. Combined with a low thermal expansion coefficient, this ensures structural integrity even under frequent temperature fluctuations, far surpassing most conventional refractory materials.
Q
Can SiC bricks resist chemical corrosion in acidic and alkaline environments?
Yes. SiC refractory bricks exhibit strong resistance to both acidic and alkaline corrosive media. This makes them particularly suitable for chemical reactors, flue gas treatment systems, acid-alkali storage tank linings, and other applications where exposure to aggressive chemical environments is common.
Q
How do I choose the right SiC brick grade for my application?
Selecting the right grade depends on your specific operating conditions. For applications requiring maximum thermal conductivity and refractoriness under load, high-purity SiC bricks (≥88% SiC) are recommended. For scenarios demanding higher mechanical strength and lower porosity — such as chemical or energy equipment — Si₃N₄-SiC bricks are the preferred choice. Please contact us with your technical requirements for a customized recommendation.