Technical Selection Criteria for Grinding Media

The Six Properties Required For Alumina Ceramic Grinding Media

A good high density alumina ceramic grinding media must possess certain characteristics to be considered for use in ball milling operations.  The results you achieve will be directly influenced by the following factors in the media:

1. Extreme hardness throughout for uniform abrasion resistance; so that the media wears evenly and retains its shape.
2. The media must exhibit high strength as shown by compressive strength-to resist impact and heavy loading which could chip or crack weak material.
3. Toughness-to resist chipping and cracking.
4. It must be free of imperfections such as voids or air pockets, chips or cracks, and especially on ball material it must not have any evidence of an “over-lapping cap” that would cause structural weakness.
5. Smooth, non-porous and chemically inert to the material being dispersed.
6. The media should be pure white in color to prevent any possibility of color contamination.

The above are the first things you should evaluate when looking for grinding media.  After  you are satisfied that a supplier can demonstrate they can meet the above criteria then, evaluate their engineering expertise and what they can provide to improve your milling operation.  It’s one thing to just provide media; it’s the complete package when engineering assistance can be provided that can objectively show improved results.  Bitossi will give you a complete engineering solution.