+86-15527482889
Hot Products
0102030405
Magnesia-Zirconia Brick for Glass Kiln Regenerators - High-Quality Products from China Suppliers and Factory
Custom-engineered for glass furnace regenerators, our magnesia-zirconia brick blends high-purity magnesite and zirconia via advanced sintering. It integrates magnesia's alkali resistance and zirconia's thermal stability, tailored to the harsh cyclic high-temperature, alkaline erosion environment of glass kiln regenerators, serving as a premium refractory for glass manufacturing.
Core Advantages
Superior Thermal Shock Resistance
ZrO₂-modified structure enhances resistance to rapid temperature changes, perfectly adapting to glass furnace regenerators' frequent heating-cooling cycles, effectively preventing cracking, peeling and structural damage.
Strong Alkali & Erosion Resistance
High MgO content resists alkaline glass melts, flue gas and dust erosion, while zirconia reinforces surface compactness, outperforming ordinary magnesia bricks in glass kiln harsh working conditions.
Excellent High-Temperature Stability
Withstands high temperatures, maintaining structural density, mechanical strength and dimensional stability under prolonged high-temperature operation in regenerators.
Energy-Saving & Long Lifespan
Dense texture minimizes heat loss, improves heat storage and exchange efficiency of regenerators, reduces glass furnace energy consumption, and extends lining service life to lower maintenance costs.
Product Parameters
| Item | Magnesia-Chrome Bricks | Magnesia-Zirconia Bricks | ||||
| DMC-20 | DMC-16 | DMC-12 | DMC-8 | MZr-75 | MZr-78 | |
| MgO % | 55 | 60 | 65 | 70 | 75 | 78 |
| SiO₂ % | 1.5 | 1.5 | 2.8 | 3.0 | 10.0 | 8.0 |
| CaO % | / | / | / | / | 2.0 | 1.5 |
| ZrO₂ % | / | / | / | / | 13.0 | 13.0 |
| Cr₂O₃ % | 20 | 16 | 12 | 8 | 2.0 | 3.0 |
| Bulk Density (g/cm³) | 3.15 | 3.05 | 3.02 | 2.95 | 3.10 | 3.18 |
| Apparent Porosity (%) | 16 | 16 | 18 | 18 | 15 | 14 |
| Cold Crushing Strength (MPa) | 40 | 40 | 40 | 40 | 80 | 100 |
| Refractoriness Under Load ℃ (0.2MPa, 0.6%) | 1700 | 1700 | 1650 | 1620 | 1600 | 1670 |
| Thermal Shock Stability (950℃ cooling, times) | 20 | 20 | 20 | 20 | 15 | 15 |
Detailed Application Scenarios
1. Application Scenarios
◎ This magnesia-zirconia brick is exclusively designed for glass furnace regenerators, widely applicable to float glass, container glass, optical glass, borosilicate glass and other specialty glass production lines. It is specifically suitable for lining key parts of glass furnace regenerators, including checkerwork (grid bricks), upper chamber linings (high-temperature zone in contact with flue gas), lower chamber linings (thermal exchange zone), flue connections (transition zone with temperature fluctuations), and regenerator throat parts (high erosion area). It perfectly adapts to the core working conditions of glass furnace regenerators, such as cyclic heating-cooling (temperature difference up to 800℃), alkaline erosion from glass melt volatiles and flue dust, and thermal shock caused by air-fuel switching, ensuring stable operation of the regenerator and improving the overall efficiency of the glass furnace.
Conclusion
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
Q
What makes magnesia-zirconia bricks better suited for glass furnace regenerators than standard magnesia bricks?
Magnesia-zirconia bricks incorporate ZrO₂ into the magnesia matrix, which significantly enhances thermal shock resistance and surface compactness. This makes them far superior to standard magnesia bricks in withstanding the frequent heating-cooling cycles, alkaline flue gas erosion, and high mechanical stress typical of glass furnace regenerator environments.
Q
Which specific parts of a glass furnace regenerator are magnesia-zirconia bricks used in?
These bricks are suitable for multiple key zones, including checkerwork (grid bricks), upper chamber linings (high-temperature flue gas contact zone), lower chamber linings (thermal exchange zone), flue connection transition zones, and regenerator throat sections that experience high erosion loads.
Q
What types of glass production lines are compatible with these magnesia-zirconia bricks?
Our magnesia-zirconia bricks are compatible with a wide range of glass manufacturing processes, including float glass, container glass, optical glass, borosilicate glass, and other specialty glass production lines that utilize regenerative furnace technology.
Q
What is the ZrO₂ content in the MZr-75 and MZr-78 grades, and how does it affect performance?
Both MZr-75 and MZr-78 grades contain 13.0% ZrO₂. This zirconia content reinforces the brick's microstructure, improving thermal shock stability, increasing cold crushing strength (up to 100 MPa for MZr-78), and reducing apparent porosity for better resistance against alkali and glass melt penetration.
Q
How do magnesia-zirconia bricks contribute to energy savings in glass furnaces?
The dense microstructure of magnesia-zirconia bricks minimizes heat loss through the regenerator lining, enhancing heat storage and exchange efficiency. This improved thermal performance directly reduces the overall energy consumption of the glass furnace while also extending the service life of the refractory lining, lowering long-term maintenance costs.
Q
Can custom sizes or grades of magnesia-zirconia bricks be ordered for specific furnace designs?
Yes. Our magnesia-zirconia bricks are custom-engineered to meet the specific requirements of different glass furnace regenerator designs. We offer multiple grades (MZr-75, MZr-78) with varying chemical compositions and physical properties, and we can work with clients to develop tailored solutions for unique furnace geometries or operating conditions. Please contact us for a customized quote.