1.High purity
2.Low alkali
3.High strength
4.High thermal shock resistance
5.Corrosion resistance properties
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Tabular Alumina uses industrial alumina as the raw material,and is sintered in high-temperature vertical kiln with a temperature greater than 1900℃.The product is made of granular corundum crystals closely arranged,evenly distributed to each other,to achieve the best density and inter-granular strength.With high purity,low alkali,high strength,high thermal shock resistance,corrosion resistance properties,it mainly used as alumina base and alumina containing refractory bone material and substrate.
| Item |
Unit |
Grain |
Fine Powder |
|
Al₂O₃ |
% | ≥99.40 | ≥99.40 |
|
Na₂O |
% | ≤0.40 | ≤0.40 |
|
SiO₂ |
% | ≤0.09 | ≤0.09 |
|
Fe₂O₃ |
% | ≤0.07 | ≤0.09 |
| Magnetic Iron |
% |
≤0.02 |
≤0.03 |
|
Bulk Density |
g/cm³ |
≥3.5 |
≥3.5 |
| Apparent Porosity | % | ≤5.0 | ≤5.0 |
| WaterAbsorption |
% |
≤1.5 |
≤1.5 |
It is widely used in metallurgical refractory materials (slide,nozzle,porous plug brick,etc.),ceramic, chemical,glass,abrasives and other industries with refractory materials figured.
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