Product introduction of magnesia brick
Magnesia brick has high refractoriness, good resistance to alkaline slag, high load softening starting temperature, but poor thermal shock resistance. Sintered magnesia brick is made of magnesia brick as raw material, after grinding, batching, mixing and forming, it is fired at the high temperature of 1550 ~ 1600℃, and the sintering temperature of high purity products is above 1750℃. Unpoured magnesia brick is made by adding appropriate chemical binder in magnesia, through mixing, forming and drying.
Features of refractory magnesia brick
Good high temperature resistance
Strong slag resistance
Good thermal shock resistance
Applications of refractory magnesia brick
Magnesia brick is widely used in steelmaking furnace lining, iron alloy fiber cable furnace in iron and steel industry, non-ferrous metallurgy industry furnace lining, building materials industry furnace, glass industry furnace body, high temperature calcination kiln, shaft kiln, tunnel kiln and other refractory industry.
| Item | MZ-91 | MZ-92 | MZ-93 | MZ-94 | MZ-97 |
| MgO, % ≥ | 91 | 92 | 93 | 94.5 | 97 |
| SiO2, % ≤ | 4 | 3.5 | 2.5 | 2 | 2 |
| Fe2O3, % ≤ | 1.3 | – | – | 1.2 | 1.2 |
| CaO, % ≤ | 2.5 | 2.5 | 2 | 1.8 | 1.8 |
| Apparent Porosity, ％ ≤ | 18 | 18 | 18 | 18 | 18 |
| Bulk Density, g/cm3 ≥ | 2.86 | 2.9 | 2.95 | 2.92 | 2.95 |
| Cold Crushing Strength Mpa, ≥ | 60 | 60 | 50 | 60 | 60 |
| 0.2Mpa Refractoriness Under Load T0.6 ℃ | ≥1570 | ≥1560 | ≥1620 | ≥1650 | ≥1700 |
| Thermal Shock Resistances 100 ℃ water cycles | ≥18 | ≥18 | ≥18 | ≥18 | ≥18 |
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