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Product introduction of magnesia brick
Magnesia bricks mainly include ordinary magnesia bricks, medium grade magnesia bricks, high-purity magnesia bricks, and fused magnesia bricks (combined magnesia bricks). Common sintered magnesia brick, commonly referred to as sintered magnesia brick (magnesia brick), is the alkali brick with the largest production and the most widely used.
Ordinary magnesia bricks: There are two main types of magnesium in the production of magnesia bricks. The mass fraction of magnesium oxide is between 89% and 98%. The limit size is generally 3-5mm.
Features of magnesia brick:
Magnesia bricks have high fire resistance, good alkali slag resistance and high starting softening temperature.
Application of maganesia brick
Magnesia bricks are widely used in steel lining, ferroalloy fiber cable furnace, nonferrous metallurgy lining, building materials lining, glass lining, high-temperature calciner, shaft kiln, tunnel kiln and other refractory industries in the iron and steel industry.
Parameters of magnesia brick:
| 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 |