Magnesia Alumina Spinel Brick
1.High melting temperature,
2.Low thermal expansion,
3.Good thermal shock resistance,
4.Good anti-stripping capacity,
5.High temperature strength,
6.Volume stability.
Product Description
Magnesia Alumina Spinel Brick Introduction
Magnesia-Alumina Spinel Brick is in order to improve the heat stability of magnesia brick, add alumina oxide in ingredient to generate the magnesia brick which the main material is magnesia-alumina spinel. The advantage of magnesia-alumina spinel brick: good heat stability, in the process of use, it will have reaction with clinker and produce a thin layer of calcium aluminate maskant, which makes the liquid not easy to penetrate, its anti-stripping performance is better than the direct bonded magnesia chrome brick.
Application of Magnesia Alumina Spinel Brick
1.The magnesia-alumina spinel can be used in the cement kiln, not only avoid the chrome pollution, and has good anti-stripping performance.
2.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.
Rongsheng Refractory Magnesia Alumina Spinel Brick Technical Data
| Items | Index |
| MgO, % | ≥82 |
| Al2O3 % | 13-15 |
| Fe2O3 % | ≤0.8 |
| Bulk Density,(g/cm3) | ≥2.98 |
| Apparent Porosity, % | ≤17 |
| Cold Crushing Strength, MPa | ≥60 |
| Refractoriness Under Load, °C, [0.2MPa×0.6%] | ≥1700 |
| Thermal Shock Resistance, Times, [1100°C, water-cooling] | ≥15 |
| Refractoriness, °C | ≥1800 |
