Magnesium-chromium brick
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Refractory Brick
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Details Introduction
Magnesia-chrome bricks are refractory material products mainly composed of magnesium oxide (MgO) and chromium trioxide (Cr2O3), with periclase and spinel as the main mineral components. These bricks have high refractoriness, high-temperature strength, strong resistance to alkaline slag erosion, excellent thermal shock stability, and considerable adaptability to acidic slag. The main raw materials for manufacturing magnesia-chrome bricks are sintered magnesite and chromite. The purity of the magnesite raw material should be as high as possible.ProjectDirectly bonded magnesia-chrome bricksOrdinary magnesia-chrome bricksMgO%
| ≥80 |
≥75 |
≥70 |
|||
| ≥65 |
≥63 |
Cr |
% |
≥6.0 |
≥8.0 |
| ≥9.0ProjectDirectly bonded magnesia-chrome bricksOrdinary magnesia-chrome bricksSiO |
≤2.8 |
≤1.8 |
Apparent porosity % |
≤1.8 |
Apparent porosity % |
| ≤18ProjectSiO |
≤17 |
≤19 |
≤17 |
- |
- |
| ≤21 |
Bulk density g/cm |
≥2.9 |
≥2.95 |
≥2.98 |
≥2.98 |
| Room temperature compressive strength MPaOrdinary magnesia-chrome bricks |
≥40 |
≥50 |
≥35 |
≥40 |
≥50 |
| ≥30 |
Softening temperature under load ℃ |
≥1550 |
Softening temperature under load ℃ |
≥1600 |
≥1530 |
| 荷重软化温度 ℃ |
≥1550 |
≥1600 |
≥1600 |
≥1530 |
≥1530 |
Key words:
Magnesium-chromium brick
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