Ceramic grinding ball of high alumina has many advantages, including high density, high mechanical strength and great wearability. It belongs to an economical, widely-using and non-metallic grinding medium. This product is mainly used in mechanical, electronics and space flight. It also can be used in fertilizer, chemical engineering and other fields.
size: Ф25mm , Ф30mm, Ф40mm,Ф50mm,Ф60mm,Ф70mm
Main Performance
|
type
index
|
high alumina grinding ball
|
micro-crystal medium
alumina ball
|
|
Al2O3 %
|
95
|
92
|
65-75
|
|
SiO2 %
|
3
|
4
|
30-15 20-15
|
|
Fe2O3
|
0.05
|
0.06
|
0.41
|
|
TiO2
|
0.04
|
0.02
|
1.7
|
|
others
|
1.90
|
2.53
|
5
|
|
bulk density g/cm3
|
3.68
|
3.65
|
2.93-3.0
|
|
water absorption %
|
<0.005
|
<0.01
|
<0.01
|
|
moh’s hardness scale
|
9
|
9
|
≥8
|
|
comprehensive
strength MPa
|
2100
|
>2000
|
>1000
|
|
abrasion %
|
0.0084
|
0.01
|
0.001
|
|
colour
|
white
|
white
|
yellow, white
|
