Magnesium Aluminum Spinel mainly depending on the production processing, divided into sintered Magnesium Aluminum Spinel and Fused Magnesium Aluminum Spinel.
Spinel has the characteristics of high bulk density, low water absorption, high temperature resistant, low thermal expansion coefficient,
good thermal stability, good colour appearance, strong resistance to slag erosion resistance etc.
Spinel is widely used in refractorymaterial, steel smelting, the cement rotary kiln and glass industry furance,
it’s the idea raw material to produce the high grade castable, slide gate and the ladle lining brick.
The chemical and physical composition of Fused Spinel：
| Specification | Chemical composition% | |||||
| Al2O3 | MgO | SiO2 | CaO | Fe2O3 | Na2O | |
| AM-70 | 71—77 | 22—27 | ≤1.0 | ≤0.6 | ≤0.3 | ≤0.3 |
The chemical and physical composition of Sintered Spinel：
| Size | Item | Al2O3 | MgO | SiO2 | Fe2O3 | Porosity | Bulk Density（g/cm3） | |
| 0-1mm 1-3mm 3-5mm | MAS1-58 | 56-62% | 28-32 | ≤4.0 | ≤2.0 | ≤9 | ≥3.0 |
