92-99% Alumina Ceramic Grinding Balls for Industrial Milling and Grinding Equipment
1)Grinding ceramic ball is one ideal ball mill grinding media, it can keep the purity and improve the stability of grinded materials.
2)The alumina grinding ball have 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.
3)The main features are high density, high hardness and strength, high wear resistance, thermal stability, corrosion resistance
and non-pollution etc.
4)During the abrasive/grinding processes, ceramic balls will not be broken, it will not contaminate the materials to be grinded.
5)Type: According to the content of aluminum oxide: 60-70%, 65-75%, 95%, 99%.
Technical Parameters
| Product |
Al2O3 % |
Bulk density g/cm2 |
Water absorption |
Mohs hardness |
Abrasion loss % |
Color |
| High alumina grinding balls |
92 |
3.65 |
0.01 |
9 |
0.011 |
White |
| High alumina grinding balls |
95 |
3.68 |
0.005 |
9 |
0.0084 |
White |
| Medium alumina grinding balls |
60-75 |
2.93 |
0.01 |
8 |
0.01 |
Yellow-White |
| Appearance demand |
| |
High alumina grinding balls |
Medium alumina grinding balls |
| Crack |
Not permission |
Not permission |
| Impurity |
Not permission |
Not permission |
| Foam hole |
Above 1mm not permission, size in 0.5mm permit 3 balls. |
| Flaw |
Max. size in 0.3mm permit 3 balls. |
| Advantage |
a) High alumina content |
| b) High density |
| c) High hardness |
| d) High wearing feature |
| Warranty |
a) By national standard HG/T 3683.1-2000 |
| b) Offer lifetime consultation on problems occurred |
| Properties |
Units |
Steatite Ceramic |
Cordierite Ceramic |
Mullite Ceramic |
95% Al2O3 |
99% Al2O3 |
Zirconia Ceramic |
Silicon Nitride |
| Colour |
|
White |
Yellow |
White |
White |
Ivory |
White |
Grey |
| Density |
g/cm3 |
2.7 |
1.9 |
2.6 |
3.5 |
3.85 |
6 |
3.2 |
| Flexural Strength |
Mpa |
140 |
30 |
120 |
280 |
340 |
1150 |
600 |
| Compressive Strength |
MPa |
900 |
350 |
500 |
2100 |
2200 |
2500 |
2500 |
| Max Use Temperature |
°C |
1000 |
1200 |
1300 |
1400 |
1650 |
1500 |
1800 |
| Thermal Condutivity |
W(m.K) |
2~3 |
1.3~1.8 |
2~6 |
16~28 |
19~30 |
2.5 |
20 |
| Thermal Expansion Cofficient |
10-6/°C |
7 ~ 9 |
1.5~3.5 |
5~6 |
6.5~7.5 |
6~8 |
8~10 |
3~4 |
| ThermalShock Resistance |
△TC |
100 |
300 |
150 |
140 |
150 |
250 |
600 |
| Specific Heat |
J/kg.K |
850 |
800 |
900 |
950 |
950 |
500 |
500 |
| Dielectric Strength |
KV/mm |
20 |
- |
30 |
12 |
10 |
5 |
20 |
| Dielectric Constant |
Er |
6 |
- |
8 |
9 |
9 |
12 |
6 |
Application
Alumina ceramic ball is widely used in ceramics, cement, coatings, refractories, inorganic mineral powder and other industries and suitable for both wet and dry superfine grinding of alumina, glaze, kaolin clay, quartz, feldspar, inks in ball mill.
Production Flow
Audited Supplier 
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