Specifications of Magnesite Chrome Bricks
| Item/Grade | MGe-16A | MGe-16B | MGe-12A | MGe-12B | MGe-8A | MGe-8B | |
|---|---|---|---|---|---|---|---|
| MgO, % | ≥ | 50 | 45 | 60 | 55 | 65 | 60 |
| Cr2O3, % | ≥ | 16 | 16 | 12 | 12 | 8 | 8 |
| Apparent Porosity, % | ≤ | 19 | 22 | 19 | 21 | 19 | 21 |
| Cold Crushing Strength, MPa | ≥ | 35 | 25 | 35 | 30 | 35 | 30 |
| 0.2MPa Refractoriness Under Load, ℃ | ≥ | 1650 | 1550 | 1650 | 1550 | 1650 | 1530 |
Introduction to Magnesia Chrome Bricks
Magnesia chrome bricks are mainly produced through sintering. These magnesia refractory bricks can be used in various high-temperature industrial applications. Its main components are magnesium oxide and Cr2O3. The combination of magnesium oxide and Cr2O3 gives this brick several advantages.
Magnesium oxide serves as the primary component. It has high temperature resistance, corrosion resistance, and good thermal shock stability.
Cr2O3 serves as the second major component. It can enhance the performance of magnesia chrome bricks, such as refractoriness, corrosion resistance, and thermal shock stability.
Classification of Chrome Magnesite Bricks
Magnesia chrome bricks are mainly classified into sintered magnesia chrome bricks, fused magnesia chrome bricks, and chemically bonded magnesia chrome bricks according to the production process. These high temp refractory bricks have slightly different chrome magnesite bricks properties.
Sintered Magnesia Chrome Bricks
Sintered magnesia chrome bricks are made by high-temperature firing of magnesia sand, chrome ore, and other raw materials. They are mainly divided into ordinary sintered magnesia chrome bricks and directly bonded magnesia chrome bricks. They have high strength and density and are commonly used in industries such as steel smelting and non-ferrous metal smelting.