Ceramic balls >> Alumina Grinding Balls
　　The alumina grinding balls has been widely used in ball mills as abrasive media for ceramic raw materials and glaze materials in ceramic factories cement factories, enamel factories and glasswork owing to the excellence of high density, high hardness, and high wear resistance. During the abrasive/grinding processing, ceramic balls will not be broken; it will not pollute the material to be grinded.
　　According to the content of aluminum：60%-70%、65%-75%、92%-95%
　　According to the specification：ф25mm-ф75mm
Main specification：
Item High Alumina Grinding Ball Middle Aiumina Grinding Ceramic Ball
Micro-crystal middle-alumina Carborundum middle alumina
  95%AL2O3 92%AL2O3 65-75%AL2O3 60-70%AL2O3
AL2O3% 95 ≥92 65-75 60-70
SiO2% 3 3.81 30-15 20-15
Fe2O3% 0.05 0.06 0.41 <0.5
TiO2% 0.04 0.02 1.7 1.8
other% 1.9 2.53 5 10
Bulk Density(g/cm3) 3.68 3.65 2.93-3.0 2.80-2.90
Water Absorption% <0.005 <0.01 <0.01 <0.05
Mohs Hardness(Grade) 9 9 ≥8 ≥8
Compressive Strength(MPA) 2100 >2000 >1000 >1000
Abrasion(%) 0.0084 0.01 0.011 <0.08
Colour White White Yellow、White Brown
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