Magnesium-aluminum spinel is widely used in refractory materials, steel smelting, cement rotary kilns and glass industrial kilns, high temperature belts of cement rotary kilns, ladle lining bricks, etc.
Chemical Composition | Spec (%) | Typical (%) | SPEC | TYPICAL |
MgO | ≥85 | 85~87 | ≤55 | 51~55 |
Al2O3 | ≥10 | 10~11 | -- | 38~42 |
SiO2 | -- | 0.8 | ≤1.5 | 1.5 |
Fe2O3 | -- | 0.6 | SPEC | TYPICAL |
CaO | -- | 1.0 | ≤2.4 | 2.25~2.35 |
Physical Properties | -- | -- | Spec | Typical |
Bulk Density | BD | g/cm3 | ≥2.9 | 2.9~3.0 |
Apparent Porosity | AP | % | ≤17 | 16 |
Thermal Shock Resistance | TSR-in air at 950℃ | Cycle | ≥100 | 100 |
Refractoriness Under Load | RUL(0.2MPa) | ℃ | ≥1700 | 1700 |
Thermal Expansion | TE-1000℃ | % | -- | 1.3 |
Cold Crushing Strength | CCS | MPa | ≥45 | 65 |
Thermal Conductivity | TC-700±25℃ | W/m.K | ≤3.8 | 3.713 |