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Introduction of High quality Electric Fused Rebonded Magnesia Chrome Brick Magnesite-chrome Brick For Furnace
Rebonded Magnesite-Chrome bricks are a type of high-level refractory product material ,which contain MgO and Cr2O3 as the main components, 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.
Features of Magnesia Chrome Brick
(1).high refractoriness
(2).high temperature strength
(3).strong resistance to alkaline slag
(4).excellent thermal stability
Common mag-chrome brick: Cement rotary kiln, glass kiln regenerative chamber, glass tank
furnace ,steel furnace lining, refining ladle, non-ferrous
metallurgical furnace, lime kiln, mix iron furnace, open hearth
furnace.
Direct-Bonded mag-chrome brick : Cement rotary kiln, steelmaking
electric furnace lining, refining furnace(RH,VOD,EAF), non-ferrous
metallurgical furnace, glass kiln regenerative chamber, lime kiln,
mix iron furnace, building materials, copper smelting furnace.
Physical and chemical indicators of Ordinary Magnesia Chrome Brick:
| Item | Index | |||||
| MG-16A | MG-16B | MG-12A | MG-12B | MG-8A | MG-8B | |
| MgO % | ≥50 | ≥45 | ≥60 | ≥55 | ≥65 | ≥60 |
| Cr2O3 % | ≥16 | ≥16 | ≥12 | ≥12 | ≥8 | ≥8 |
| Apparent porosity % | ≤19 | ≤22 | ≤19 | ≤21 | ≤19 | ≤21 |
| Cold Crush Strength MPa | ≥35 | ≥25 | ≥35 | ≥30 | ≥35 | ≥30 |
| 0.2Mpa Refractoriness Under Load ℃ | ≥1650 | ≥1550 | ≥1650 | ≥1550 | ≥1650 | ≥1530 |
Physical and chemical indicators of Fused Semi-Recombined Magnesia Chrome Brick:
| Item | Index | |||
| ZMG-16A | ZMG-12A | ZMG-8A | ZMG-6 | |
| MgO % | ≥60 | ≥68 | ≥75 | ≥75 |
| Cr2O3 % | ≥16 | ≥12 | ≥8 | ≥6 |
| SiO2 % | ≤1.5 | ≤1.5 | ≤1.5 | ≤2.5 |
| Apparent porosity % | ≤18 | ≤18 | ≤18 | ≤18 |
| Cold Crush Strength MPa | ≥40 | ≥45 | ≥45 | ≥45 |
| 0.2Mpa Refractoriness Under Load℃ | ≥1700 | |||
Physical and chemical indicators of Fused Semi-Recombined Magnesia Chrome Brick :
| Item | Index | |||
| BMG-26 | BMG-24 | BMG-22 | BMG-20A | |
| MgO % | ≥50 | ≥50 | ≥55 | ≥58 |
| Cr2O3 % | ≥26 | ≥24 | ≥22 | ≥20 |
| SiO2 % | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 |
| Apparent porosity % | ≤16 | ≤16 | ≤16 | ≤16 |
| Cold Crush Strength MPa | ≥40 | ≥45 | ≥45 | ≥45 |
| 0.2Mpa Refractoriness Under Load℃ | ≥1700 | |||
| Item | Index | |||
| BMG-18 | BMG-16A | BMG-12A | ||
| MgO % | ≥58 | ≥60 | ≥68 | |
| Cr2O3 % | ≥18 | ≥16 | ≥12 | |
| SiO2 % | ≤2.0 | ≤2.0 | ≤2.0 | |
| Apparent porosity % | ≤16 | ≤16 | ≤16 | |
| Cold Crush Strength MPa | ≥40 | ≥45 | ≥45 | |
| 0.2Mpa Refractoriness Under Load℃ | ≥1700 | |||
Physical and chemical indicators of Fused Recombined Magnesia Chrome Brick:
| Item | Index | |||||
| DMG-26 | DMG-24 | DMG-22 | DMG-20 | DMG-16 | DMG-12 | |
| MgO % | ≥50 | ≥50 | ≥55 | ≥58 | ≥62 | ≥68 |
| Cr2O3 % | ≥26 | ≥24 | ≥22 | ≥20 | ≥16 | ≥12 |
| SiO2 % | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
| Apparent porosity % | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 | ≤16 |
| Cold Crush Strength MPa | ≥40 | ≥40 | ≥40 | ≥40 | ≥40 | ≥40 |
| 0.2Mpa Refractoriness Under Load℃ | ≥1700 | ≥1700 | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
