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Fused magnesia is made by melting selected Grade A natural magnesia or light-burned Mg particles in an electric arc furnace. This product has high purity, large particle size, fine structure, strong slag resistance and excellent thermal stability. It is a relatively high-quality high-temperature insulating material. It is also an important material for the production of high-quality magnesia bricks, magnesia carbon bricks and shapeless refractory materials.
Due to its excellent corrosion resistance, refractory grade fused magnesia is used in high wear areas in steel making, eg, basic oxygen and electric arc furnaces, converters and ladles.
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Brand |
Physical and Chemical Specification |
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Name |
MgO(%） |
SiO2(%） |
CaO(%） |
Fe2O3(%) |
Al2O3(%) |
B.D(g/cm3) |
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Fused magnesia |
FM960 |
≥96.00 |
≤2.20 |
≤2.00 |
≤0.90 |
≤0.30 |
≥3.35 |
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FM970 |
≥97.00 |
≤1.50 |
≤1.50 |
≤0.80 |
≤0.30 |
≥3.45 |
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FM975 |
≥97.50 |
≤1.40 |
≤1.40 |
≤0.70 |
≤0.20 |
≥3.45 |
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FM980 |
≥98.00 |
≤1.20 |
≤1.20 |
≤0.60 |
≤0.20 |
≥3.50 |
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FM985 |
≥98.50 |
≤1.00 |
≤1.00 |
≤0.40 |
≤0.20 |
≥3.50 |
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FM990 |
≥99.00 |
≤0.80 |
≤0.80 |
≤0.30 |
≤0.20 |
≥3.50 |
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