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Product introduction of magnesia brick
The main crystalline phase of magnesite brick is magnesite, which has the typical characteristics of refractory products, usually alkaline, but has poor heat resistance. There are burnt magnesia bricks and unburned magnesia bricks. The sintered magnesia bricks are divided into silicate bonded magnesia bricks, direct bonded magnesia bricks and re bonded magnesia bricks. Unburned magnesia bricks are divided into chemical bonded magnesia bricks and asphalt bonded magnesia bricks.
Features of magnesia brick
Magnesia bricks are characterized by high refractories, good alkali slag resistance, high starting softening temperature and poor thermal shock resistance. The sintered magnesia bricks are made of magnesia bricks. After crushing, batching, mixing and shaping, it will burn at 1550~1600 ℃. The baking temperature of high-purity products exceeds 1750 ° F. Unplaced magnesia bricks are made by mixing, shaping and drying magnesia with appropriate chemical binder.
Application of maganesia brick
Maganesia brick is mainly used for steel making alkali electric furnace, furnace bottom and wall, oxygen converter permanent lining, non-ferrous metal smelting furnace, high-temperature tunnel kiln, calcined magnesia brick and cement rotary kiln lining, furnace bottom and heating furnace wall, glass furnace storage lattice brick, etc.
More relevant refractory products: silicon carbide castable
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 |