Xintai Magnesia Spinel Bricks for cement rotary kilns are premium refractory materials designed for high-temperature industrial applications. Made from high-purity magnesia (MgO) and synthetic spinel, these bricks offer exceptional thermal shock resistance, high mechanical strength, and superior corrosion resistance against clinker and slag. Ideal for cement rotary kilns, steelmaking furnaces, and other high-heat environments, these bricks extend the service life of your equipment while maintaining stable performance under extreme conditions.
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: Maintains integrity under rapid temperature changes.
- High Mechanical Strength: Ensures stability in heavy industrial operations.
- Superior Corrosion Resistance: Protects against clinker and slag erosion.
- Low Porosity & Dense Structure: Extends service life and improves performance.
- Eco-Friendly Alternative: Chromium-free, safer than magnesia-chrome bricks.
- Stable Performance: Reliable under repeated heating and cooling cycles.
Typical Applications
- Cement rotary kiln transition zones and burning zones
- Steelmaking furnace linings and ladle linings
- Glass industry regenerators
- Lime kilns and non-ferrous metal furnaces
- Any industrial furnace requiring high thermal shock resistance
Production Details
Magnesia Spinel Bricks for cement rotary kilns are manufactured using advanced batching, mixing, and high-pressure shaping processes. Sintered at elevated temperatures, each brick achieves a dense, durable structure with reliable physical and chemical properties. Stringent quality control and laboratory testing ensure consistency and longevity, making them suitable for demanding industrial applications.
Packing and Shipping Details
- Packing: Standard export wooden pallets with waterproof wrapping and reinforced steel straps
- Protection: Pallets covered with protective film to prevent moisture absorption
- Shipping: Sea, land, or air transport options available
- Customization: Packing and labeling can be tailored to customer requirements
Frequently Asked Questions (FAQ)
Q1: What makes magnesia spinel bricks better than magnesia-chrome bricks?
Magnesia spinel bricks from Xintai Refractory are chromium-free, offering an eco-friendly alternative. They provide excellent thermal shock resistance and high mechanical strength, outperforming magnesia-chrome bricks in both durability and safety, especially in cement rotary kiln applications.
Q2: Can magnesia spinel bricks be customized for different kiln sizes?
Yes, Xintai offers custom sizes and shapes to fit specific kiln zones and industrial furnace requirements. All customized bricks maintain high thermal shock resistance and mechanical strength.
Q3. What is the typical service life of magnesia spinel bricks in cement kilns?
Service life varies depending on operating conditions, but Xintai magnesia spinel bricks typically last longer than conventional magnesia-chrome bricks, thanks to their dense structure, low porosity, and superior resistance to clinker and slag.
Q4: Are these bricks suitable for steelmaking ladles and other metallurgical applications?
Absolutely. They are widely used in steelmaking furnaces, ladle linings, and non-ferrous metal furnaces because they can withstand high temperatures, thermal shock, and corrosive slag environments.
Q5: How should magnesia spinel bricks be installed to ensure optimal performance?
Proper installation includes accurate alignment, correct joint filling, and avoiding sudden thermal shocks during the initial firing. Following these best practices maximizes brick life and maintains stable performance in high-temperature operations.
