Magnesia Iron Spinel Bricks are high-performance basic refractory bricks made from high-purity magnesia and iron spinel, offering excellent resistance to high-temperature slag corrosion and mechanical wear in steelmaking furnaces.
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Magnesia Iron Spinel Bricks are manufactured by mixing high-quality magnesia with iron spinel, followed by pressing and high-temperature firing. These bricks combine the high refractoriness and basic slag resistance of magnesia with the excellent thermal stability, corrosion resistance, and mechanical strength of iron spinel. MgO-FeO spinel bricks are particularly suitable for the harsh conditions of steelmaking, including electric arc furnaces (EAF), ladles, and converter linings. They resist erosion from molten steel and basic slags, maintain structural integrity under repeated thermal cycles, and provide extended service life while reducing maintenance costs.
|
Items |
Magnesia-iron spinel brick |
High toughness magnesia-iron spinel brick |
|
MgO % ≥ |
85 |
88 |
|
Fe2O3 % |
5-7.5 |
5-6 |
|
SiO2 % ≤ |
2 |
1.5 |
|
Al2O3 % |
3.0-5.0 |
4.0-7.0 |
|
Apparent Porosity % ≤ |
17 |
16 |
|
Bulk Density (g/cm3) ≥ |
3.0 |
2.9 |
|
Cold Crushing Strength (Mpa) ≥ |
45 |
55 |
|
Refractoriness Under Load (0.2MPa×0.6%) °C ≥ |
1600 |
1650 |
|
Thermal Shock Resistance (1100°C, water cooling) cycle ≥ |
6 |
8 |
Magnesia Iron Spinel Bricks are widely used in:
Electric Arc Furnace (EAF) hearths and sidewalls
Ladle linings and tapholes
Converter linings and furnace roofs
Continuous casting tundishes
Areas exposed to basic slag and molten steel
Ferroalloy and non-ferrous metal furnaces
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