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MSE PRO 20 mm Alumina Milling Media Balls, 1 kg
SKU: BA0206
Description of Alumina Milling Media Balls
- High performance wear resistant alumina ceramic balls are used in grinding and milling various materials.
- Different sizes of alumina grinding balls are available: <1mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 13mm, 15mm, 17mm, 20mm, 30mm, 35mm, 40mm.
- The alumina grinding / milling media balls are extensively used in the fields of Paints, Inks, Geology, Metallurgy, Electronics, Ceramics, Glass, Refractory, Chemical Engineering, etc.
Technical Data for Alumina Milling Media
|
Product # |
BA0206 |
| Quantity | 1 kg - 20 mm alumina balls, Approx. - 65 balls |
|
Main Material |
aluminum oxide ceramic Al2O3 > 92% |
|
Ball Diameters |
less than 1mm up to 40mm available |
|
Density |
3.6 g/cm3 |
|
Shape |
sphere |
|
Color |
white |
|
Surface Condition |
polished |
|
Hardness |
>80 HRA |
|
Abrasion / Wear Resistance |
very good |
| Compatible Materials | medium-hard |
Additional Information on Alumina Milling Media Balls
- Pre-grinding the coarse, hard materials with large balls
- The use of many small balls will increase the fine portion of the materials when the grinding time is increased
- A higher percentage of the grinding balls will accelerate the grinding process
Selection of the Size of Grinding Balls
|
Type of feed material |
Ball diameter |
|
Hard samples feed particle size (~10 mm) |
30 mm or 40 mm |
|
Medium size (<5 mm) |
20 mm |
|
Fine material (0.5 mm) |
10 mm or 5 mm or smaller |
|
Mixing and blending of dry or liquid materials |
10 mm |
|
Mixing and blending of viscous samples |
20 mm |
These are general recommendations: the size of grinding jars and grinding balls should be determined experimentally if necessary.
Choice of Grinding Jars & Grinding Balls
In order to prevent excessive wear abrasion, the hardness of the grinding jars and the grinding balls must be higher than that of the material used for grinding. Normally, grinding jars and grinding balls of the same material should be chosen.
Grinding Jars and Balls Combination
|
Grinding Jar Volume |
100ml |
250ml |
500ml |
1000ml |
|
|
Compatible Ball Weight |
66g |
165g |
330g |
660g |
|
|
Ball size/qty (pcs) |
5mm |
106 |
300 |
|
|
|
10mm |
20 |
76 |
50 |
100 |
|
|
15mm |
|
4 |
30 |
59 |
|
|
20mm |
|
|
3 |
5 |
|
These values are general recommendations: the size and number of balls should be determined experimentally.
Calculated Ball Weight
|
Ball diameter (mm) |
5 |
10 |
15 |
20 |
30 |
40 |
|
|
Material |
Density |
Calculated ball weight (g) |
|||||
|
Agate |
2.65 g/cm3 |
0.17 |
1.39 |
4.68 |
11.10 |
37.46 |
88.80 |
|
Alumina ceramic |
3.8 g/cm3 |
0.25 |
1.99 |
6.72 |
15.92 |
53.72 |
127.34 |
|
Zirconium oxide |
6.06 g/cm3 |
0.39 |
3.17 |
10.71 |
25.39 |
85.67 |
203.07 |
|
Stainless steel |
7.93 g/cm3 |
0.52 |
4.15 |
14.00 |
33.20 |
112.05 |
265.60 |
|
PTFE |
2.14 g/cm3 |
0.14 |
1.12 |
3.78 |
8.96 |
30.24 |
71.68 |
|
Tungsten carbide |
14.95 g/cm3 |
0.98 |
7.82 |
26.41 |
62.59 |
211.24 |
500.73 |