yixing xinwei leeshing refractory materials co.,Ltd
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Magnesia alumina spinel brick is an advanced refractory material. Generally, it is prepared from high-purity materials, has good corrosion resistance, thermal shock stability. The amount of spinel content in the production of magnesia alumina spinel brick should keep a proper level. As spinel amount increases, the thermal shock resistance is better, but the strength is caused by the mismatch expansion. The Al2O3 in the product should not be more than 15~20%, preferably 10~18%.
Physical and Chemical Indicators Magnesia Refractory Brick :
| Item | CRE-1 | CRE-2 | CRE-3 |
| MgO% | 80-85 | 90 | 93 |
| Al2O3% | 9 | 5 | 5 |
| Bulk Density(g/cm3) | 18 | 18 | 18 |
| Refractoriness℃ | ≥1790 | ≥1770 | ≥1750 |
| Apparent porosity% | 2.85-2.9 | 2.9 | 2.95 |
| Cold Crushing Strength Mpa | 40 | 45 | 40 |
| Refractoriness Under Load (0.2Mpa) ℃ | 1650-1700 | 1700 | 1700 |
1. Low bulk density, low thermal conductivity, good thermal insulation performance.
2. Refractory category allow direct contact of fire, suitable for various atmosphere.
3. Good integrity with furnace lining, long service life, easy operation, could be shaped freely.
4. Product specification: standard form, normal standard, shaped and special shaped bricks.
5. Can be used in various kilns because of its cheapness and general tray package. Among all of the refractory materials, it is the most widely used.
The bricks are packed on wooden pallet with papers in each layer and PP film wrapped outside of the whole pallet.