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High-Purity 65% Zircon Brick from China Factory - Reliable Suppliers for Glass, Metallurgy, and Ceramic Industries
Core Advantages
Exceptional High-Temperature Resistance
With refractoriness under load up to 1650℃ and pyrometric cone equivalent of SK 31, our zircon mullite brick maintains structural integrity and stable performance in extreme high-temperature industrial environments, avoiding deformation or damage during long-term continuous operation. This high-temperature stability makes the zircon mullite refractory brick an ideal choice for high-heat industrial furnaces.
Superior Corrosion & Wear Resistance
The dense crystal structure of zircon brick effectively resists erosion from molten glass, steel slag, metal oxides and acid-alkali media. Its high hardness also reduces wear caused by material scouring during long-term use.
Stable Volume & High Mechanical Strength
With low re-fire shrinkage and cold crushing strength ≥100MPa, our zircon brick maintains stable volume at high temperatures and withstands mechanical impact, suitable for heavy-duty industrial applications.
Product Parameters
| Item | Dense Zircon Brick | Zircon Brick |
|---|---|---|
| ZrO₂ % | ≥65 | ≥65 |
| SiO₂ % | ≤34 | ≤34 |
| Fe₂O₃ % | ≤0.4 | ≤0.5 |
| Bulk Density (g/cm³) | ≥3.80 | ≥3.75 |
| Apparent Porosity (%) | ≤17 | ≤18 |
| Cold Crushing Strength (MPa) | ≥100 | ≥100 |
| Refractoriness Under Load ℃ (0.2MPa, T0.6) | ≥1700 | ≥1700 |
Detailed Application Scenarios
1
Glass Industry (Core Application)
◎ As an indispensable refractory material for glass melting furnaces, zircon brick is perfectly adapted to glass production due to its outstanding resistance to glass liquid erosion and thermal shock stability. Our zircon refractory brick is widely used in key parts of various glass furnaces, including lining of alkali-free, low-alkali, sodium-calcium and borosilicate glass melting furnaces, as well as furnace crown, port arch, melting pool bottom, feeder brick and other critical components that directly contact molten glass.
It can effectively reduce bubble precipitation in glass melts, ensure the purity and quality of glass products, and extend the service life of glass furnaces, thereby reducing production downtime and costs.
2
Metallurgical Industry
◎ In metallurgical production, zircon brick is specially designed for high-temperature and corrosion-prone working environments, relying on its excellent chemical stability and refractory performance. It is mainly used in lining of stainless steel ladles and continuous casting ladles, high-temperature induction furnace lining, sprue brick, plug brick, and furnace bottom/back lining that contacts metal oxides and slags.
3
Ceramic & Other High-Temperature Industries
◎ In the ceramic industry, zircon brick is applied to lining of ceramic sintering kilns and ball mills, leveraging its high wear resistance and high-temperature stability to improve the sintering quality of ceramic products. In the chemical industry, it is used for lining equipment handling high-temperature and corrosive media due to its acid-alkali resistance. Additionally, it is suitable for other high-temperature industrial furnaces with frequent thermal shock and heavy erosion, providing reliable refractory protection.
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 service temperature of zircon brick?
Our zircon brick has a refractoriness under load (0.2MPa, T0.6) of ≥1700℃ for both Dense Zircon Brick and standard Zircon Brick, with a pyrometric cone equivalent of SK 31 (1650℃). This makes them suitable for the most demanding high-temperature industrial furnace environments.
Q
What is the difference between Dense Zircon Brick and standard Zircon Brick?
The primary difference lies in density and porosity. Dense Zircon Brick has a higher bulk density (≥3.80 g/cm³) and lower apparent porosity (≤17%), compared to standard Zircon Brick (≥3.75 g/cm³ and ≤18%). Dense Zircon Brick is therefore more resistant to penetration by molten glass or slag, making it preferable for the most erosion-intensive positions in a furnace.
Q
Which industries are zircon bricks most commonly used in?
Zircon bricks are most widely used in the glass industry — particularly in glass melting furnaces for alkali-free, low-alkali, sodium-calcium, and borosilicate glass. They are also extensively applied in metallurgical industries (steel ladles, continuous casting, induction furnaces), the ceramic industry (sintering kilns, ball mills), and chemical processing equipment that handles high-temperature corrosive media.
Q
How does zircon brick resist corrosion from molten glass and slag?
Zircon brick's dense crystalline microstructure — composed primarily of ZrO₂ (≥65%) and SiO₂ (≤34%) — forms a highly stable chemical matrix that resists penetration and chemical attack from molten glass, steel slag, metal oxides, and both acidic and alkaline media. The very low Fe₂O₃ content (≤0.4–0.5%) also minimizes contamination of glass melts, helping to preserve product purity.
Q
Can zircon bricks be customized to specific shapes and sizes?
Yes. We offer customized zircon brick solutions tailored to specific furnace designs and application requirements. Whether you need standard shapes or special profiles for furnace crowns, port arches, melting pool bottoms, feeder bricks, or ladle linings, our engineering team can work with your technical specifications. Please contact us with your project details for a tailored quotation.
Q
How do I request a quote for zircon brick products?
You can request a quote directly through the contact form on this page. Please provide details such as the intended application, required brick type (Dense Zircon Brick or standard Zircon Brick), quantity, and any specific size or performance requirements. Our team will respond promptly with a competitive and accurate quotation.