Magnesia iron spinel brick is mainly used for cement kilns to replace magnesia chrome brick. It consists of high-purity magnesia sand and Al-Fe sand. Compared with magnesia chrome brick, magnesia iron spinel brick has high compressive strength that can extend the life cycle.
- MgO: ≥85%;
- Al2O3: ≥3-5%;
- Fe2O3: 4-6%;
- Cold Crushing Strength: ≥50MPa;
- Size: 230*114*65mm (standard)/And other sizes;
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High Working Temperature
Proper Thermal Stability
Proper Acid Resistance
Good Thermal Shock Resistance
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Technical Data of Magnesium Iron Spinel Brick
| Item | MFe-85A | MFe-85B | |
|---|---|---|---|
| MgO, % | ≥ | 85 | 85 |
| Al2O3, % | ≥ | 3-5 | 3-5 |
| Fe2O3, % | ≥ | 4-6 | 4-6 |
| Bulk Density, g/cm³ | ≥ | 2.95 | 2.90 |
| Cold Crushing Strength, MPa | ≥ | 55 | 50 |
| 0.2MPa Refractoriness Under Load, ℃ | ≥ | 1650 | 1600 |
The standard size is 230*114*65mm. Ronghua also can provide customized service to customers in case they need special shapes, for example, checker bricks.
Features of Magnesia Iron Spinel Refractory Brick
- High Compressive Strength: Magnesia iron spinel bricks have a stable and flexible structure. So they have high compressive strength. The spinel of bricks helps to resist mechanical shock and friction. In this situation, they are good substances to replace magnesia chrome bricks.
- Good Thermal Shock Resistance: The high refractoriness of magnesium iron spinel refractory brick is conducive to withstanding high-temperature equipment. In the rotary kilns, magnesia iron spinel brick can form a protective film to undertake the thermal shock. Moreover, the low refractoriness under load also helps to resist the thermal shock.
- Environment Friendly: Magnesium iron spinel brick mainly consists of magnesia oxide, alumina oxide, and ferric oxide. And it will not react with other chemical substances in the high-temperature equipment. In this situation, magnesia iron spinel brick will not release poisonous gas.
- Strong Resistance to Permeability: In a high-temperature environment, magnesia iron spinel bricks will form protective films to resist chemical erosion. The high bulk density also helps to improve the resistance to permeability. Strong resistance to permeability benefits reducing chemical erosion.
Applications of Magnesia Iron Spinel Bricks
Magnesium iron spinel bricks can replace magnesia chrome bricks that are used for cement rotary kilns. They can also used in ladles, lime vertical furnaces, heat treatment furnaces, recirculating fluidized bed furnaces, and other industrial furnaces.
Low Price for Customers
Ronghua has long-term partners to provide high-quality raw materials at a low price. So we can ensure that our factory produces high-quality refractory bricks for customers at low prices. Moreover, we have a strong productive ability that could ensure the steady high quality and supply of refractory bricks.
Overall Guidance for Customers
Ronghua provides professional guidance to customers. Many customers choose guidance services to save unnecessary economic costs. Our technician will come to the customers’ factory or construction place. They will give solutions according to the problem in practical use. If you need refractory materials, feel free to contact us. View the YouTube video about Ronghua Refractory.
