Product Main

Specifications

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: ф30mm-ф70mm
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