RH Furnaces Magnesia Chrome Refractory Bricks 3.18g/cm3 3.26g/cm3
High density long time use life Magnesia-chrome refractory bricks for RH furnaces
Product Description
Magnesia-chrome bricks are refractory products containing magnesium oxide (MgO) and chromium oxide (Cr2O3) as the main components, and periclase and spinel are the main mineral components. This type of brick has high refractoriness, high temperature strength, strong resistance to alkaline slag, excellent thermal stability, and certain adaptability to acidic slag. The main raw materials for the manufacture of magnesia chrome bricks are sintered magnesia and chromite. The purity of the magnesia raw material should be as high as possible. The requirements for the chemical composition of the chromite ore are: Cr2O3: 30-45%, CaO: ≤ 1.0-1.5%.
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Brand of name
Index |
pre-masonry magnesia-chrome bricks | ||||
| XDMG-B | XDMG-M | XDMG-P1 | XDMG-P2 | XDMG-RB | |
| MgO % | ≧54.5 | 55-62 | ≧60 | ≧60 | ≧70 |
| Cr2O3 % | ≧19.5 | 17-21 | ≧12-20 | ≧18 | ≧15 |
| Al2O3 % | ≧6 | ||||
| SiO2 % | ≦1.8 | ≦2 | ≦2 | ≦2 | |
| Fe2O3 % | ≦14.5 | ||||
| CaO % | ≦2.5 | ≦1.3 | ≦1.3 | ||
|
Mpa Cold crushing strength |
≧45 | ≧40 | ≧50 | ≧55 | ≧45 |
|
Mpa Bending strength 1500℃ |
≧1.0 | ||||
|
g/cm3 Bulk density |
≧3.20 | ≧3.0 | ≧3.18 | ≧3.26 | ≧3.0 |
|
0.2Mpa ℃ Refractoriness under load T0.6 |
≧1750 | ≧1700 | ≧1700 | ≧1700 | |
| % Apparent porosity | ≦18 | ≦18 | ≦18 | ≦18 | ≦19 |
The size is precise, providing kinds of shapes according to customer's drawing
Application of Magnesia Chrome Refractory Brick
- Steelmaking basic open hearth
- Electric furnace bottom and furnace wall,
- lining of oxygen converter
- Non-ferrous metal smelting furnace
- High temperature tunnel kiln
- Calcined magnesia brick
- Cement rotary kiln lining
- Furnace bottom and furnace wall of heating furnace
- Glass kiln regenerator checkered bricks, etc.
Advantage Of Magnesia Chrome Bricks
1) Silicon oxide is above 95%.
2) Good acid erosion resistance.
3) High softening point
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