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Spinel Alumina Magnesia Fire Brick
1.Good alkali resistance
2.Good corrosion resistance
3.High refractoriness under
Features
1. Good slag resistance
2. Excellent corrosion resistance
3. High refractoriness under load
Applications
Magnesia alumina spinel brick is widely used in transition zone of large dry-process cement rotary kiln, lining of ladle,and roof of EAF, etc.
Physical properties and chemical composition
Item
| LMLJ-80 | LMLJ-75 | ||
Standard | Typical Value | Standard | Typical Value | |
MgO, % | ≥80 | 85.5 | ≥75 | 81.2 |
Al2O3 , % | 8~15 | 10.2 | 8~15 | 9.83 |
apparent porosity, % | ≤17(18) | 16 | ≤18(19) | 16 |
0.2MPa refractoriness under load °C | ≥1700 | 1800 | ≥1650 | 1750 |
cold crushing strength ,MPa | ≥40 | 57 | ≥40 | 68 |
Thermal expansion(1100°C,water cooling), times | ≥20 | ≥20 | ≥5 | ≥16 |
