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High-Quality 65% Zircon Brick for Industrial Use from China Suppliers | Reliable Factory Product
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
Application 01
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.
Application 02
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.
Application 03
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
What is the maximum operating temperature for zircon brick?
Q
Our zircon brick offers a refractoriness under load (0.2 MPa, T0.6) of ≥1700℃ for both Dense Zircon Brick and standard Zircon Brick grades, making them suitable for extreme high-temperature industrial furnaces and kilns that require sustained structural integrity under heavy thermal loads.
What industries are zircon bricks most commonly used in?
Q
Zircon bricks are most widely used in the glass industry (glass melting furnaces, furnace crowns, port arches, melting pool bottoms), the metallurgical industry (stainless steel ladles, continuous casting ladles, induction furnace linings), and the ceramic industry (sintering kiln linings, ball mills). They are also applied in chemical plants handling high-temperature corrosive media.
What is the difference between Dense Zircon Brick and standard Zircon Brick?
Q
The primary differences lie in bulk density and apparent porosity. Dense Zircon Brick has a bulk density of ≥3.80 g/cm³ and apparent porosity of ≤17%, while standard Zircon Brick has a bulk density of ≥3.75 g/cm³ and apparent porosity of ≤18%. Dense Zircon Brick is preferred for applications requiring even greater resistance to glass liquid penetration and corrosion.
How does zircon brick resist corrosion from molten glass and metal slags?
Q
Zircon brick's dense crystal microstructure with a ZrO₂ content of ≥65% provides an exceptionally low porosity barrier against the penetration of molten glass, steel slag, and metal oxides. Its chemical inertness to both acidic and alkaline media further prevents chemical erosion, significantly extending service life in contact zones.
Can zircon bricks withstand thermal shock in industrial furnaces?
Q
Yes. Zircon brick exhibits excellent thermal shock stability, which is one of its core advantages in glass and ceramic furnace applications. The material's low thermal expansion coefficient and high mechanical strength (cold crushing strength ≥100 MPa) allow it to endure repeated rapid temperature fluctuations without cracking or spalling.
How do I select the right zircon brick grade for my application?
Q
Selecting the right grade depends on your operating temperature, the type of corrosive media present, mechanical load requirements, and furnace structure. Dense Zircon Brick is recommended for direct-contact zones with molten glass or aggressive slags, while standard Zircon Brick suits general high-temperature lining applications. Please contact us with your specific requirements and our technical team will recommend the most suitable solution.