Magnesia Spinel Bricks are high-quality refractory materials made from high-purity magnesia (MgO) and synthetic spinel. They are widely used in cement rotary kilns, steelmaking furnaces, and other high-temperature equipment. With excellent thermal shock resistance, high mechanical strength, and strong corrosion resistance to clinker and slag, these bricks significantly extend the service life of industrial kilns and ladles.
Technical Specifications
| Item | Index |
|---|---|
| MgO, % | ≥ 80 |
| Al₂O₃, % | ≥ 10 |
| Apparent Porosity, % | ≤ 17 |
| Bulk Density, g/cm³ | ≥ 2.9 |
| Cold Crushing Strength, MPa | ≥ 50 |
| High-temperature Bending Strength (1350℃ × 0.5h), MPa | ≥ 3.5 |
| Thermal Shock Resistance (1100℃, Water Cooling), Cycle | ≥ 12 |
Key Features
Excellent thermal shock resistance for high-temperature environments
High strength and good mechanical stability
Superior resistance to clinker and slag corrosion
Low apparent porosity, dense structure, and long service life
Eco-friendly alternative to magnesia-chrome bricks (no Cr₂O₃)
Stable performance under rapid temperature fluctuations
Typical Applications
Cement rotary kiln transition zone and burning zone
Steelmaking furnaces and ladle linings
Glass industry regenerators
Lime kilns and non-ferrous metal furnaces
Industrial furnaces requiring high thermal shock stability
Production Details
Magnesia Spinel Bricks are produced using high-purity magnesia and synthetic spinel with advanced batching, mixing, and high-pressure shaping processes. The bricks are sintered at high temperatures to ensure dense structure and stable performance. Strict quality control and laboratory testing guarantee reliable physical and chemical properties for each batch, meeting the demands of cement plants, steel mills, and other industries.
Packing and Shipping Details
Packing: Standard export wooden pallets with waterproof wrapping and reinforced steel straps
Protection: Each pallet covered with protective film to prevent moisture absorption
Shipping: Sea, land, or air transport available; flexible delivery options to meet customer needs
Customization: Packing and labeling can be tailored according to client requirements
Frequently Asked Questions (FAQ)
Q1: What makes magnesia spinel bricks better than magnesia-chrome bricks?
They are chromium-free, more eco-friendly, and offer similar or better performance in thermal shock resistance and corrosion resistance.
Q2: Can these bricks be customized in size and shape?
Yes, besides standard sizes, customized dimensions and shapes can be produced based on design drawings.
Q3. What industries commonly use magnesia spinel bricks?
They are mainly used in cement rotary kilns, steelmaking furnaces, glass furnaces, lime kilns, and non-ferrous metal industries.
Q4: How do magnesia spinel bricks improve kiln performance?
Their high strength, low porosity, and strong resistance to chemical erosion extend kiln lining life and reduce downtime.
Q5: Do you provide technical support for installation?
Yes, we provide professional guidance on brick selection, masonry techniques, and overall refractory solutions.
