The internal organizational structure of aluminum oxide is changed from many crystal forms into α-Al2O3 phase after high-temperature calcination, then process to white powder.
Density: 3.9-4.0g/cm3
Melting point: 2050℃
Boiling point: 2980℃
Insoluble in water.
Good sintering character, high conversion rate, low sodium content, perfect quality;
High melting point; good thermal stability, abrasive resistance, mechanical strength.
Good electrical insulating property and corrosion resistance.
Application:
Shaped refractory products and monolithic such as castable, plastics, patching, gunning, painting, etc.
Improving the high-temperature strength of refractory.
Enhancing the corrosion-resistance of refractory.
Chemical and physical property:
Item | Unit | Low Na type | Midium Na tpye |
Al2O3 | % | ≧99 | ≧99 |
SiO2 | % | ≦0.1 | ≦0.2 |
Fe2O3 | % | ≦0.05 | ≦0.05 |
Na2O, | % | ≦0.1 | ≦0.3 |
True Specific Gravity | g/cm3 | ≧3.95 | ≧3.94 |
α-Al2O3 | % | ≧95 | ≧93 |
Granularity (D50) | micron | 3-5 | 3-5 |
Packing:
Woven bag with film (25kg)
