Introduction:
High 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. High alumina balls, with more than 90% alumina content are high alumina balls. Among them, the high-alumina balls are subdivided into 90 porcelain, 92 porcelain, 95 porcelain and 99 porcelain. Due to its extremely high production cost, few large-scale manufacturers manufacture 99 porcelain in large quantities. At present, it is 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 |
| High Alumina Grinding Balls |
92 |
3.65 |
0.01 |
9 |
0.011 |
White |
| Appearance Demand |
| |
High 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 |
≥92% |
SiO2 |
3.81% |
| Fe2O3 |
0.06% |
MgO |
0.80% |
| CaO |
1.09% |
TiO2 |
0.02% |
| K2O |
0.08% |
Na2O |
0.56% |
Specific properties:
| Spec.(mm) |
Volume(cm3) |
Weight(g/pc) |
| Φ30 |
14±1.5 |
43±2 |
| Φ40 |
25±1.5 |
126±2 |
| Φ50 |
39±2 |
242±2 |
| Φ60 |
58±2 |
407±2 |
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