Ground Calcined Alumina S9G

S9G is a fine ground, low soda, calcined alumina.


  • High Alumina monolithic refractory
  • Industrial Ceramics
  • Grinding media
  • High Tension Insulators
Product Specification
Chemistry(by XRF)
Parameter Minimum Typical Maximum
Na2O(%) - 0.10 0.15
SiO2(%) - 0.02 0.04
Fe2O3(%) - 0.02 0.04
CaO(%) - 0.02 0.04
Al2O3(%) 99.2 99.6 -
Physical Properties
Specific Surface Área (BET) (m²/g) 0.8 1.2 1.5
LOI (RT - 1100ºC)(%) - 0.20 0.60
Sedigraph d50 (μm) - 4.0 4.5
Wet Sieving Analysis >45 μm (%) - 1.0 3.0


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All physical and chemical results given above are as per ACTech standard methods. Free copies of our test methods can be obtained on request.