1.Description:
Sintered Spinel is made of industrial alumina and high purity caustic-calcined magnesite powder by high pressure sintering and fine grinding in UHT converter.
2.Characteristics:
It characterized with high hardness, small coefficient of thermal expansion,thermal shock stability etc.
3.Application:
It’s ideal raw material of ladle castable and magnesium spinel bricks. It’s extensively applied to the lining of converter,glass kiln, open hearth, casting ladle etc.
4.Specification:
Items | Unit | MAS 66 | MAS 78 | |||
Guarantee Value | Typical Value | Guarantee Value | Typical Value | |||
Chemical Composition | Al2O3 | % | 64-67 | 65.7 | 74-79 | 77.2 |
MgO | % | 32-35 | 33.3 | 20-25 | 21.8 | |
CaO | % | 0.60 max | 0.39 | 0.6 max | 0.26 | |
SiO2 | % | 0.40 max | 0.25 | 0.4 max | 0.25 | |
Fe2O3 | % | 0.50 max | 0.31 | 0.5 max | 0.31 | |
Na2O | % | 0.10 max | 0.04 | 0.3 max | 0.18 | |
Magnetic | % | 0.02max | 0.01 | 3.2 min | 3.26 | |
Bulk Density | g/cm3 | 3.2 min | 3.26 | 1850 max | 1800 | |
Refractoriness | ℃ | 1850 max | 1800 | 1 max | 0.5 | |
Absorbing Water Rate | % | 1 max | 0.5 | 5.0 max | 3.2 | |
Porosity Rate | % | 5.0 max | 3.2 | 74-79 | 77.8 | |
Grain Size | mm | 8-5, 5-3, 3-1, 1-0 | ||||
Fine Powder | mesh | -220, 325F |