High alumina


High wear-resisting: The alumina balls' wear-resisting is higher than the common ceramic balls'. When it is working, the ball will not pollute the grinded materials, so it can keep the purity and improve the stability of grinded materials especially the ceramic glaze.

High density: The high density, high hardness and the high grinding characters save the grinding time, enlarge the smashing room. So it can improve the grinding efficiency.

Chemical information
Al2O3 90%,
SiO2 5~7%
CaO ~2%
MGO <1%
Na2O ~0.1%
K2O ~0.1%

Physical data
Density 3.58~ 3.60g /cm3
Moh s Hardness 9scale
Compressing strength >2000mpa
Color white

Alumina ball size
Inch mm
3/4 20
1 25
1 1/4 30
1 1/2 40
1 3/4 45
2 50
2 1/2 60