Introduction:
Mid-Alumina grinding balls refer to materials such as bauxite, roller powder, industrial alumina powder, and high-temperature calcined Alpha alumina powder as raw materials, after batching, grinding, milling (pulping, mud making), forming, and drying , Sintering and other processes, mainly used as a grinding medium and widely used ball stone. According to different alumina content, it can be divided into medium-aluminum balls, medium-high aluminum balls and high-aluminum balls. Generally, we classify those with 65%-70% alumina content as medium-aluminum balls. Some types mainly made by hand by some special ceramic factories.
Application:
Grinding Balls are suitable for grinding medium used in ball grinding machines.
Technical Parameter:
Product
|
Al2O3
(%) |
Bulk density (g/cm2) |
Water absorption |
Mohs Hardness scale |
Abrasion loss (%) |
Color |
| Medium Alumina Grinding Balls |
65-70 |
2.93 |
0.01 |
8 |
0.01 |
Yellow-White |
| Appearance Demand |
| |
Medium Alumina Grinding Balls |
| Crack |
Not Permission |
| Impurity |
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 |
- High Alumina Content
b)High density
c)High Hardness
d)High Wearing Feature
|
|
| Warranty |
- By National Standard HG/T 3683.1-2000
b) Offer lifetime consultation on problems occurred
|
Typical chemical compositions:
| Items |
Proportion |
Items |
Proportion |
| Al2O3 |
65-70% |
SiO2 |
30-15 |
| Fe2O3 |
0.41 |
MgO |
0.10 |
| CaO |
0.16 |
TiO2 |
1.71 |
| K2O |
4.11 |
Na2O |
0.57 |
Products size data:
| Spec.(mm) |
Volume(cm3) |
Weight(g/pc) |
| Φ30 |
14±1.5 |
43±2 |
| Φ40 |
25±1.5 |
100±2 |
| Φ50 |
39±2 |
193±2 |
| Φ60 |
58±2 |
335±2 |
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