We can identify four distinct areas of consideration; these relate to the machine or mill, the method of operation, the formula of product processed and the milling media used.

This is Part 2 of an informational review of milling media. The intention is to provide a periodic update of various aspects and considerations when using ceramic media in micro-milling and dispersing applications.

The advantages of using the highest specification grinding media in milling operations are well documented and understood. Higher density provides the potential to increase productivity, often significantly over other traditional ceramic and glass materials. Improved toughness and durability result in extended bead lifetimes and machine maintenance periods.

This article reviews the effects of bead density. It is not intended to be an absolute guide or a scientific paper, but rather to highlight important factors and potential consequences for bead mill operation.