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King's AluKing 80 Alumina Grinding Balls

King's beads


  • Fine grinding of silica, alumina, zirconium silicate, feldspar, quartz, kaolin clay, glaze, inks and ceramics.
  • Suitable for wet grinding.
  • Recommended in Stirred and Ball Mill. Not recommended for high speed stirred mills and sand mills.


Real specific weight g/cm3 min. 3.20+/-0.02
Mohs Hardness   9
Roundness % min. 90
Crushing Strength(20mm) kgf/mm2 min. 1800
Water Absorption % 0.02 max
Self-wearing(EWT) % 0.02 max.(24h)
Color   White
Surface   Smooth and no cracking.
Chemical composition Al2O3(%) min. 80