Nitride Bonded Silicon Carbide Refractory Bricks
Making World-Class High-Performance Refractory Products Available in India at Lower Price
Wedge India offers Nitride Bonded Silicon Carbide Bricks (Si₃N₄-SiC Bricks) – engineered for furnace linings, kilns, and high-temperature industrial applications. These bricks combine exceptional thermal shock resistance, high strength, and outstanding wear resistance, making them the ideal choice for steel, cement, glass, and non-ferrous industries.
Key Features
Excellent resistance to oxidation and alkali corrosion
High load-bearing capacity at elevated temperatures
Low thermal expansion and high thermal conductivity
Long service life in harsh furnace environments
Designed for blast furnaces, kilns, incinerators, and non-ferrous melting furnaces
Technical Specifications
| Property | Value |
|---|---|
| SiC % | 75 |
| Si₃N₄ % | 22 |
| Al₂O₃ % | 0.37 |
| Fe₂O₃ % | 0.27 |
| Bulk Density (g/cm³) | 2.73 |
| Apparent Porosity (%) | 13.3 |
| Cold Crushing Strength (MPa) | 229 |
| Modulus of Rupture (1400°C) | 65.2 |
Applications
Iron & Steel Industry: Blast furnace linings, troughs, ladles, and tapholes
Cement Industry: Kiln linings and cooler zones
Glass Industry: Regenerators, tank superstructures
Non-Ferrous Metallurgy: Aluminum, copper, and zinc furnace linings
Incinerators & Boilers: Resistant to slag and alkali attack
Why Choose Wedge India?
At Wedge India, we combine global refractory expertise, advanced manufacturing, and competitive pricing to deliver reliable high-performance solutions. Our Si₃N₄-SiC Brick Linings are manufactured to international standards and are trusted in more than 58 countries worldwide.
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Nitride Bonded Silicon Carbide Refractory Bricks
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Frequently Asked Questions (FAQs)
Q1. What is a Nitride Bonded Silicon Carbide (Si₃N₄-SiC) brick?
A Nitride Bonded Silicon Carbide Brick is a high-performance refractory material made from silicon carbide and silicon nitride bonding, designed for high-temperature and high-wear furnace linings.Q2. What are the advantages of Nitride Bonded Silicon Carbide bricks?
These bricks offer excellent thermal shock resistance, high mechanical strength, resistance to slag and alkali attack, and long service life in demanding furnace conditions.Q3. In which industries are Si₃N₄-SiC bricks used?
They are widely used in iron & steel, cement, glass, non-ferrous metallurgy, petrochemical, and waste incineration industries.Q4. What is the chemical composition of Wedge India’s Si₃N₄-SiC bricks?
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SiC: 75%
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Si₃N₄: 22%
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Al₂O₃: 0.37%
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Fe₂O₃: 0.27%
Q5. What are the key physical properties?
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Bulk Density: 2.73 g/cm³
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Apparent Porosity: 13.3%
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Cold Crushing Strength: 229 MPa
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Modulus of Rupture at 1400°C: 65.2 MPa
Q6. Where are Nitride Bonded Silicon Carbide bricks installed in steel plants?
They are used in blast furnace linings, troughs, tapholes, runners, and ladle slag lines.Q7. How do these bricks perform in cement kilns?
Si₃N₄-SiC bricks are highly resistant to clinker formation and alkali attack, making them ideal for cooler zones and transition areas.Q8. Can Si₃N₄-SiC bricks be used in glass industry applications?
Yes, they are suitable for regenerator linings, tank superstructures, and areas exposed to aggressive glass melts.Q9. What temperature resistance do these bricks provide?
They maintain structural integrity and strength at temperatures exceeding 1400°C.Q10. Why choose Wedge India for Si₃N₄-SiC bricks?
Wedge India delivers international-standard refractories with reliable quality, competitive pricing, and global export capability to over 58 markets.-
