+86-15527482889
Hot Products
0102030405
China Suppliers Magnesia-Zirconia Brick for Glass Kiln Regenerators - High Temperature & Thermal Shock Resistance 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 (FAQ)
1
What makes magnesia-zirconia bricks superior to ordinary magnesia bricks for glass furnace regenerators?
Magnesia-zirconia bricks combine the high MgO content for strong alkali resistance with the addition of ZrO₂, which significantly enhances thermal shock resistance and surface compactness. This dual-material advantage allows them to outperform ordinary magnesia bricks in withstanding the frequent heating-cooling cycles, alkaline erosion from flue gas, and structural stress common in glass furnace regenerators.
2
Which types of glass production lines are magnesia-zirconia bricks suitable for?
These bricks are suitable for a wide range of glass production lines, including float glass, container glass, optical glass, borosilicate glass, and other specialty glass manufacturing processes. They are designed specifically for lining the regenerators of glass furnaces across all these applications.
3
What specific parts of a glass furnace regenerator can these bricks be used in?
Magnesia-zirconia bricks are suitable for multiple key zones within glass furnace regenerators, including checkerwork (grid bricks), upper chamber linings (high-temperature zones in contact with flue gas), lower chamber linings (thermal exchange zones), flue connections (transition zones with temperature fluctuations), and regenerator throat parts (high erosion areas).
4
How do magnesia-zirconia bricks contribute to energy savings in glass furnaces?
The dense texture of magnesia-zirconia bricks minimizes heat loss and improves the heat storage and exchange efficiency of regenerators. This enhanced thermal efficiency directly reduces the overall energy consumption of the glass furnace, lowering operating costs while also extending the lining service life and reducing maintenance frequency.
5
What is the difference between MZr-75 and MZr-78 magnesia-zirconia brick grades?
The primary difference lies in their MgO content and resulting mechanical properties. MZr-78 has a higher MgO content (78% vs 75%), higher bulk density (3.18 vs 3.10 g/cm³), lower apparent porosity (14% vs 15%), and significantly higher cold crushing strength (100 MPa vs 80 MPa), along with a higher refractoriness under load (1670℃ vs 1600℃). MZr-78 is therefore suited for more demanding high-temperature and high-load applications.
6
Can magnesia-zirconia bricks withstand the thermal shock caused by air-fuel switching in regenerators?
Yes. The ZrO₂-modified microstructure of magnesia-zirconia bricks is specifically engineered to handle the thermal shock caused by air-fuel switching in regenerators. The bricks effectively resist cyclic temperature differences of up to 800℃, preventing cracking, peeling, and structural damage, and ensuring the long-term stable operation of the regenerator system.