Zirconium toughened alumina ceramic grinding balls (ZTA450 ceramic balls) are appropriate to be applied in the fine/superfine grinding of metal minerals such as gold, silver, copper, platinum, the grinding of ground calcium carbonate, kaolin, zirconium silicate, quartz, silica, titanium pigment, alumina, painting, printing ink, battery, diatomite and coating etc.
High grinding performance and cost-efficiency
HCTA450 (Zirconia balls)
Item Technical Data Remarks
Composition
AL2O3≥5%
SiO2:≤30%
ZrO2:≥62%
Fe2O3≤0.1%
other≤3%
Specific density(g/cm3) ≥4.48
Vickers hardness(GPa) ≥10 HV5
Wear volume(g/kg.h) ≤1.5 Tested in high speed ball mills
Crushing strength(Φ3.0) ≥1200N Diameter 3.0mm tested
Appearance : No crackle, no sticky silicon
Roundness ≥95%
packing of ceramic grinding media and delivery:
Audited Supplier 
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