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Product category|Magnesia Brick
MgO: ≥60%
Refractoriness under load: ≥1600℃
Bulk Density: ≥2.95g/cm³
Online Time: 7*24 hours
It is an alkaline refractory material with a magnesia content of more than 85% and periclase as the main crystal phase. Magnesite bricks are refractory bricks made of fused magnesia and sintered magnesia fired at high temperatures.
Good thermal shock resistance
Strong resistance to temperature changes
Good thermal conductivity
Good corrosion resistance
Light weight
It mainly used for steel making alkaline open hearth furnace, electric furnace bottom and furnace wall, permanent lining of oxygen converter, non-ferrous metal smelting furnace, high temperature tunnel kiln, calcined magnesia brick and cement rotary kiln lining, furnace bottom and furnace wall of heating furnace, Glass kiln regenerator checker bricks, etc.
| Item | High purity magnesia brick | Directly bonded magnesia chrome bricks | Unburnt magnesia zirconium brick | Magnesium zirconium brick | |||
| MgO% | ≥97.5 | ≥96.5 | ≥96 | ≥95 | ≥60 | 76-85 | 76-85 |
| SiO2% | <0.5 | ≤1.5 | ≤1.5 | ≤2.0 | <0 | Zr0₂ 6.5-13 | Zr0₂ 6.5-13 |
| Fe2O3% | <1.0 | ≤0.8 | ≤0.8 | — | — | — | — |
| Cr2O3% | — | — | — | — | ≥12 | — | — |
| Show porosity | <16 | ≤16 | ≤15 | <17 | <18 | 6-8 | 12-14 |
| Compressive strength | ≥65 | ≥60 | ≥60 | ≥59 | ≥34 | — | ≥90 |
| Refractoriness under load ℃((0.2MPa,0.6%)) | ≥1700 | ≥1700 | ≥1700 | ≥1650 | ≥1700 | ≥1600 | ≥1640 |
| Bulk density(g/cm³) | ≥3.1 | ≥3.06 | ≥3.05 | 2.95 | 2.95 | ≥3.15 | ≥3.1 |
| Modulus of ruputure | >5.8 | — | >5.8 | — | ≥8 | — | — |
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