High Alkali Resistant Brown Magnesia Chrome Brick For High Temperature Kilns
High Alkali resistant Performance brown color Magnesia Chrome brick for high temperature kilns
Product Description
Magnesia-chrome brick is an alkaline refractory material fired from chrome ore and magnesia. The main components are chromium oxide and magnesium oxide.Good thermal stability, it is sintered at a high temperature above 1800°C in an ultra-high temperature tunnel kiln, and the refractoriness is above 2000°C. The performance of resistance to sudden temperature change and resistance to alkaline slag is good. Used for laying steel leveling furnace, steelmaking electric furnace, non-ferrous metal smelting furnace, cement rotary kiln lining, RH refining furnace. This kind of brick has high fire resistance, high temperature and high temperature strength, strong erosion resistance to alkaline slag, good thermal stability, and also has a certain adaptability to acid slag.
| Directly bonded magnesia chrome brick | |||||||||
| XZMGe-18A | XZMGe-18B | XZMGe-20A | XZMGe-26 | DMC-12 | DMC-6 | DMC-4 | DMC-9A | DMC-9B | |
| MgO ≥% | 55 | 55 | 60 | 40 | 60 | 75 | 80 | 70 | 70 |
| SiO2 ≤% | 1.5 | 2.5 | 3.0 | 3.2 | 2.8 | 2.5 | 2.8 | 3.0 | |
| CaO ≤% | 2.0 | ||||||||
| Cr2O3 ≥% | 18 | 18 | 20 | 26 | 12 | 6 | 4 | 9 | 9 |
| Apparent porosity | 18 | 18 | 18 | 21 | 19 | 18 | 18 | 19 | 19 |
| Normal temperature compressive strength≥MPa | 40 | 40 | 35 | 35 | 35 | 40 | 40 | 40 | 40 |
| 0.2MPa Load softening starting temperature | 1700 | 1700 | 1700 | 1700 | 1650 | 1600 | 1580 | 1600 | 1580 |
| Bulk density ≥g/cm3 | 3.0 | 3.0 | 3.10 | 3.2 | 3.0 | 2.9 | 2.95 | 2.98 | 2.98 |
Made of high purity magnesia and chrome concentrate, it is produced by high temperature firing, with properties of excellent thermal shock stability, slag attack resistance, thermal fatigues resistance, and vacuum damage resistance. In addition, they are resistant to oxidation reduction, comparatively better wear resistance and erosion resistance.
Application of Magnesia Chrome Refractory Brick
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Steelmaking basic open hearth
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Electric furnace bottom and furnace wall,
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lining of oxygen converter
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Non-ferrous metal smelting furnace
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High temperature tunnel kiln
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Calcined magnesia brick
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Cement rotary kiln lining
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Furnace bottom and furnace wall of heating furnace
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Glass kiln regenerator checkered bricks, etc.
Packing and Delivery
Standard export pallet packing.
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