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Magnesia alumina spinel brick is a kind of alkaline refractory product with periclase as main phase and magnesia-alumina spinel clinker as basic material. The product is of good temperature vibration, good strength and volume stability in high temperature environment.
Application:
- The magnesia alumina spinel bricks can be used in the cement kiln, not only avoid the chrome pollution, and has good anti-stripping performance.
- It can be used in refractory carstables for ladles, which greatly improve the anti-erosion ability. It is widely applied to steel-making refractory material. The preparation of high quality pre-synthertic spinel provide a new material for amorphous and fixed high purity refractory.
Iterms | KMAS-1 | KMAS-2 | KMAS-3 | KMAS-4 |
МgО%, ≥ | 88 | 86 | 84 | 82 |
Аl2О3%, ≥ | 6 | 9 | 9 | 8 |
SiО2%, ≥ | 0,5 | 0,5 | 0,8 | 1,0 |
Bulk density, g/cm3 | 2.9 | 2.9 | 2.85 | 2.8 |
Open porosity,%, ≤ | 18 | 18 | 19 | 20 |
Compressive strength, N/mm², ≥ | 60 | 60 | 50 | 45 |
Softening onset temperature, ℃, ≥ | 1700 | 1700 | 1680 | 1650 |
Thermal resistance, ≥, times | 10 | 10 | 10 | 10 |
Thermal conductivity, 1000℃, W/m K | 2.9 | 2.9 | 2.8 | 2.7 |