We are a refractory material manufacturer, with four major factories: heavy brick factory, light brick factory, monolithic refractory factory and fused-cast brick factory.
We promise to provide you with high-quality refractory materials.
Brief introduction of magnesia brick
Magnesia brick, according to its different production process, is divided into sintered magnesia brick and chemically bonded magnesium brick of two types. Sintered magnesia brick consists of sintered magnesia sand, with the right proportion of particle size, with the addition of an aqueous solution of MgCl2 and sulfite pulp scraps as a binder, pressed into shape and sintered at a high temperature of 1550~1650℃. Chemical bonded magnesia brick is not a sintering process, sintered magnesia sand according to the proportion of particle size, add the appropriate amount of mineralization and binder, pressure molding, after drying is the finished product.
Features of magnesia brick
The thermal conductivity of magnesia bricks is high, second only to that of carbon bricks and silicon carbide bricks in refractory products, and decreases with increasing temperature.
Application of maganesia brick
Magnesia bricks are widely used in refractory industries, such as furnace coatings for steel production, ferroalloy fiber cable furnaces in steel industry, coatings of industrial furnaces for non-ferrous metallurgy, industrial furnaces for building materials, bodies of industrial furnaces for glass, high temperature calcination furnaces, vertical furnaces, tunnel furnaces, 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 |