Magnesia Chrome Bricks for glass furnace regenerators are high-performance basic refractories manufactured using high-purity fused or sintered magnesia and chrome ore. Designed to withstand corrosive alkali vapors, molten glass erosion, and heavy structural loading, these bricks provide long-term durability and stable performance in the harsh working environment inside glass furnaces.
Technical Specifications
| Item / Grade | MGe-16A | MGe-16B | MGe-12A | MGe-12B | MGe-8A | MGe-8B |
|---|---|---|---|---|---|---|
| MgO, % ≥ | 50 | 45 | 60 | 55 | 65 | 60 |
| Cr₂O₃, % ≥ | 16 | 16 | 12 | 12 | 8 | 8 |
| Apparent Porosity, % ≤ | 19 | 22 | 19 | 21 | 19 | 21 |
| Cold Crushing Strength, MPa ≥ | 35 | 25 | 35 | 30 | 35 | 30 |
| 0.2MPa Refractoriness Under Load, °C ≥ | 1650 | 1550 | 1650 | 1550 | 1650 | 1530 |
Key Features
- Excellent resistance to alkali vapor attack and molten glass erosion
- High bulk density and low apparent porosity
- Strong load softening temperature and high refractoriness under load
- Good structural stability during repeated thermal cycling
- Long service life and reduced maintenance frequency
- Stable performance under oxidizing and slightly reducing atmospheres
- Manufactured with carefully graded magnesia and chromite for optimum bonding
Typical Applications
Magnesia Chrome Bricks are widely used in glass industry regenerator structures, including:
• Regenerator checker chambers
• Side walls and lattice sections
• Hot blast channels and airflow passages
• Upper and middle combustion zones
• Partition walls and high-load structural areas
They are suitable for soda-lime, high-borosilicate, float glass, and other daily glass melting operations.
Production Details
These bricks are produced using a high-purity magnesia–chrome formulation, ensuring strong bonding and durability under glass furnace operating conditions:
Raw Material Selection
High-grade sintered or fused magnesia combined with selected chrome ore to ensure corrosion resistance and chemical stability.Particle Fraction Design
Optimized grain-size distribution for dense structure and reduced open porosity.High-Pressure Forming
Bricks are shaped through advanced mechanical presses to achieve high green density.High-Temperature Sintering
Final firing produces direct bonding and excellent mechanical strength for long-term furnace performance.
This process provides low porosity, higher load-bearing capacity, and longer service cycles in continuous furnace operations.
Packing and Shipping Details
• Export-grade fumigation-free wooden pallets
• Plastic wrapping and edge protection to prevent abrasion and moisture influence
• Individual product markings and batch traceability
• Sea, rail, and multimodal global logistics options
• Custom packaging solutions available upon request
Frequently Asked Questions (FAQ)
Q1: Why are magnesia chrome bricks widely used in glass furnace regenerators?
Because they offer excellent resistance to alkali vapors, molten glass erosion, and structural deformation, making them ideal for the hot and chemically aggressive environment of regenerators.
Q2: What is the working temperature range?
They are designed for temperatures up to 1700°C depending on grade and application.
Q3. What type of glass production lines are they suitable for?
Soda-lime glass, float glass, borosilicate glass, daily glass production, and similar high-temperature melting lines.
Q4: Can customized shapes and sizes be supplied?
Yes, customized blocks, special shapes, and engineered designs are available based on furnace drawings and project needs.
Q5: Do you provide technical support for installation and selection?
Yes, we offer professional guidance in material selection, technical parameters, and furnace lining optimization to ensure stable performance and extended service life.
