Information
Tabular alumina is a re-crystalline sintered Alpha alumina with high density. It consists of large (50 – 200 µm), flat, table shaped corundum crystals.
Production process: Tabular alumina is a re-crystalline sintered Alpha alumina with high density. It consists of large (50 – 200 µm), flat, table shaped corundum crystals. Feedstock is calcined Alumina which is ground to fine powder and palletized to balls with a diameter of abt. 25 mm. These balls are sintered (fired) at 1750°C in modern shaft kilns and following crushed, milled and sieved to standard fractions/sizes.
Packing: Bulk
Big bags
Bags
Applications: Tabular Alumina is used in the refractory industry. Application is shaped and unshaped products, like bricks or specially shaped products e.g. sliding gates, porous plugs for steel ladles and shaped products for the glass industry. Furthermore kiln furniture like ceramic wheels are produced for the application in ceramic kilns. Another application of the Tabular balls is the filtering in Aluminium metal production.
Specification
Chemical analysis:
Al2O3 Min. 99.30
Fe2O3 Max. 0.10
SiO2 Max. 0.20
Na2O Max. 0.40
B.D. Min. 3.54 g/cm³ (uncrushed material)
Apparent Porosity: Max. 5.00
Water absorption: Max. 1.50
Grain size: 1/2″-1/4″, 1/4″-8, 3-6, 6-10, 6-14, 8-14, 14-28, 28-48, -14, -28, -48, -100, -325 mesh 5-10, 2-5, 3-6, 2-3, 1-3, 1-2, 0.5-1, 0.2-0.6, 0-1, 0-0.5, 0-0.3, 0-0.2, 0-0.045 mm
