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Directly bonded magnesia-chrome brick/Used for VOD furnace, refining ladlearc furnace/AOD Furnace/Thermal shock
Product description:
Directly bonded magnesia-chrome brick is generally refers to by the impurity content of lower chromium ore and relatively pure magnesia, in 1700℃ above the temperature of the products, refractory grains between direct contact.
Category of Refractory Brick/Fire Brick:
Magnesia-chrome brick is divided into ordinary magnesia-chrome brick, directly combined magnesia-chrome brick, electrofused semi-recombined magnesia-chrome brick and electro fused magnesia-chrome brick.
Features:
The direct combination of magnesia-chrome brick has the characteristics of corrosion resistance, erosion resistance, spalling resistance, good slag resistance and thermal shock stability.Used for smelting nonferrous metals, pierrey-smith, Noranda, Ausmelt, Flash famace, electric steelmaking furnace, converter, VOD furnace, refining ladle, glass kiln, cement kiln, etc.
Physical and chemical indicators:
| Brand | XY-ZMGe-20 | XY-ZMGe-18 | XY-ZMGe-16A | XY-ZMGe-16 | XY-ZMGe-12 | XY-ZMGe-8 | ||
|---|---|---|---|---|---|---|---|---|
| MgO/% | 60 | 63 | 65 | 65 | 70 | 80 | ||
| Cr2O3/% | 20 | 18 | 16 | 16 | 12 | 8 | ||
| CaO/% | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | ||
| Fe2O3/% | 10.0 | 9.0 | 8.0 | 9.0 | 7.0 | 6.0 | ||
| SiO2/% | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | ||
| AL2O3/% | 5.0 | 6.0 | 5.0 | 6.0 | 5.0 | 4.0 | ||
| Apparent porosity,≤ | 17 | 17 | 17 | 17 | 17 | 17 | ||
| Bulk density/g﹒cm-3,≥ | 3.15 | 3.10 | 3.15 | 3.10 | 3.10 | 3.10 | ||
| Crushing strength/ MPa,≥ | 60 | 45 | 60 | 45 | 50 | 50 | ||
| Refractoriness under load,0.2MPa,℃(≥) | 1700 | 1700 | 1700 | 1700 | 1700 | 1700 | ||
| 1100℃ Cair cooling,blowing Themal shock resistanc | 4 | 4 | 4 | 4 | 3 | 3 | ||
Production and inspection :
Packaging and transportation: