Tabular Alumina is a pure sintered α-alumina material that has been fully densified by rapid sintering at temperatures in excess of 1800°C. Tabular Alumina has characteristic large, well developed hexagonal tablet shaped alumina crystals of up to 200μm length. Tabular alumina has extremely high refractoriness, high mechanical strength and abrasion resistance, very good chemical purity, excellent dielectric properties and good resistance against acid and alkali corrosion.
Physical and Chemical Properties:
Style(Item)
| chemical index | physical index | |||||
Al2O3(%) | SiO2(%) | Fe2O3(%) | Na2O(%) | Volume density (g/cm3) | water absorption(%) | apparent porosity(%) | |
0-1mm 1-3mm 3-5mm 5-8mm |
99.3 min |
0.1 max |
0.08 max |
0.4 max |
3.5 |
1.5 |
5 max |
200#-0 320#-0 | 99.1 min | 0.15 max | 0.1max | 0.4 max | 3.45 | 2.0 | 6 max
|
Advantages of Tabular alumina:
1)Tabular alumina price has high purity, good volume stability, minimal re-burning shrinkage, for the production of refractory or castable high-temperature treatment has good thermal shock stability and bending strength.
2) The crystal of tabular alumina price staggered plate shape, to increase the mechanical strength of the particles; interior structure full of closed pores, high bulk density, low apparent porosity, low water absorption, to reduce the amount of fluid re-use productions.
3) High refractoriness high corrosion resistance high erosion resistance, excellent thermal shock resistance, low shrinkage and good thermal load strength etc.
