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High-Quality Silicon Carbide Bricks (SiC) from China Suppliers | Reliable Factory 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 | 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.
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Frequently Asked Questions (FAQ)
What are the temperature limits for these refractory materials?
Our materials can withstand continuous operating temperatures up to 1600°C and short-term temperatures up to 1700°C, maintaining structural integrity without deformation even in extreme high-heat environments.
How does the wear resistance compare to traditional refractory bricks?
Featuring high hardness and a dense microstructure, they effectively resist material friction and impact, significantly reducing wear loss and extending service life compared to conventional refractory products.
In which industries are these bricks primarily applied?
They are widely applied in the Metallurgical Industry (blast furnaces, converter linings), Ceramic Industry (kiln furniture and linings), Chemical Industry (reactors, storage tanks), and Energy Industry (coal gasifiers, waste incinerators).
What is the difference in SiC content between the SiC Brick and Si₃N₄-SiC Brick?
The SiC Brick contains a SiC percentage of ≥88% or ≥80% (depending on the grade), while the Si₃N₄-SiC Brick contains ≥72% SiC and is reinforced with ≥18% Si₃N₄.
How do these products perform under thermal shock?
They exhibit excellent thermal shock stability due to their low thermal expansion coefficient. Under 1100°C cooling tests, the SiC Bricks withstand ≥50 or ≥40 cycles, and the Si₃N₄-SiC Bricks withstand ≥30 cycles.
Can these bricks resist chemical corrosion?
Yes, they feature strong corrosion resistance that effectively resists erosion from acidic, alkaline, and other harsh chemical media, making them highly suitable for chemical reactors and gasifiers.