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65% Zircon Brick for Industrial Use - High-Quality Refractory Products from China Suppliers & Factory
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
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Q What is the maximum service temperature of zircon mullite brick?Our zircon mullite brick features a refractoriness under load of up to 1650℃ and a pyrometric cone equivalent of SK 31, making it suitable for sustained use in extreme high-temperature industrial furnace environments without deformation or structural failure.
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Q What is the difference between Dense Zircon Brick and standard Zircon Brick?Both grades share the same ZrO₂ content (≥65%) and cold crushing strength (≥100MPa). The Dense Zircon Brick offers a slightly higher bulk density (≥3.80 g/cm³ vs ≥3.75 g/cm³), lower apparent porosity (≤17% vs ≤18%), and stricter Fe₂O₃ control (≤0.4% vs ≤0.5%), making it better suited for applications requiring minimal contamination and maximum density.
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Q Which glass furnace components are zircon bricks most suitable for?Zircon bricks are widely applied to furnace crown, port arch, melting pool bottom, feeder bricks, and all critical components that directly contact molten glass — including lining for alkali-free, low-alkali, sodium-calcium, and borosilicate glass melting furnaces. They effectively reduce bubble precipitation and extend furnace service life.
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Q Can zircon brick resist both acidic and alkaline corrosion?Yes. The dense crystal structure of zircon brick provides excellent resistance to erosion from molten glass, steel slag, metal oxides, and both acid and alkali media. This makes it a versatile choice for glass, metallurgical, ceramic, and chemical industries where aggressive chemical environments are present.
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Q Is zircon brick suitable for continuous casting and ladle applications in steelmaking?Absolutely. Zircon brick is specifically used in the lining of stainless steel ladles, continuous casting ladles, high-temperature induction furnace linings, sprue bricks, and plug bricks in metallurgical production, thanks to its excellent chemical stability, refractoriness, and resistance to metal oxides and slags.
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Q How can I request a quote or custom specification for zircon bricks?You can submit your inquiry directly through the contact form above, providing details such as your required dimensions, quantity, application environment, and any special specifications. Our technical team will respond promptly with a tailored solution and competitive quotation.