Fused Magnesia Bricks are high-performance basic refractory materials made from high-purity magnesia with more than 90% MgO content, using periclase as the main crystalline phase. They are produced through processes of crushing, mixing, molding, high-temperature firing, and drying. With excellent refractoriness, high slag resistance, and strong thermal stability, fused magnesia bricks are widely used in steelmaking, non-ferrous metal smelting, cement, glass, and various high-temperature industrial furnaces.
Technical Specifications
| Item | Fused Magnesia Bricks |
|---|---|
| Grade | DMZ-92 |
| MgO (%) | 92.5 |
| CaO (%) | 1.8 |
| SiO₂ (%) | 3.5 |
| Refractoriness Under Load (0.2MPa, T₀.₆ ℃) | 1600 |
| Cold Crushing Strength (MPa) | 80 |
| Bulk Density (g/cm³) | 2.96 |
| Apparent Porosity (%) | 15.5 |
Key Features
Excellent Slag Resistance – Strong resistance to alkaline slags (CaO, FeO), suitable for steelmaking and alkaline furnaces.
High Refractoriness – Withstands up to 2000℃, among the highest of refractory bricks.
Good Thermal Conductivity – Ensures stable furnace operation and energy efficiency.
High Load Softening Temperature – Between 1500–1550℃, maintaining structural strength under high load.
Durability – High cold crushing strength ensures long service life.
Typical Applications
Steelmaking alkaline furnaces (hearth, walls, permanent linings)
Oxygen converters and electric furnace linings
Non-ferrous metal smelting furnaces
Glass kiln regenerators and lattice bricks
High-temperature tunnel kilns
Rotary cement kilns and lime kilns
Production Details
Raw Materials: High-purity magnesite with MgO ≥ 90%
Manufacturing Process: Crushing → Mixing → Molding → High-temperature firing → Drying → Inspection
Quality Control: Strict chemical analysis, porosity and strength tests, and refractoriness evaluation ensure each batch meets international standards.
Packing and Shipping Details
Packing: Bricks are packed in strong fumigation-free wooden pallets or wooden cases with protective wrapping to prevent damage during transport.
Shipping: Global delivery by sea freight, containerized transport to ensure safe arrival. Customized packaging and labeling are available according to client requirements.
Frequently Asked Questions (FAQ)
Q1: What is the main advantage of fused magnesia bricks?
They offer exceptional refractoriness (up to 2000℃), strong resistance to alkaline slags, and durability under high-temperature loads.
Q2: Can fused magnesia bricks be used in acidic environments?
No, magnesia bricks are basic refractories and are not suitable for acidic slags or acidic refractory contact.
Q3. What sizes are available?
Standard size is 230×114×65 mm, but customized shapes and sizes can be manufactured upon request.
Q4: How are the bricks shipped internationally?
Bricks are securely packed in wooden pallets or crates and shipped in containers. We ensure safe packing for long-distance transport.
Q5: Do you provide technical support for installation?
Yes, we offer technical guidance and support for proper selection, installation, and maintenance of fused magnesia bricks.
