Calcined aluminas are alpha-aluminas that consist primarily of sintered agglomerates of individual alumina crystals. Classified by soda content, particle size and degree of calcination. Ground and fine-ground calcined aluminas are used as a matrix filler to upgrade the product performance of formulations predominantly based on natural raw materials.


  • Improve abrasion resistance
  • Improve mechanical properties
  • Thermal shock resistance
  • Significantly reduced shrinkage after drying

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