In media milling, mechanical attrition and impaction of the suspended drug particles are brought about by grinding balls, often termed as the milling media, constructed out of a variety of material such as glass (yttrium-stabilized), zirconium oxide, ceramics or highly cross-linked polystyrene resins [78]. Pearl balls and beads are commonly used as well in which case the techniques are termed pearl and bead milling, respectively. Unlike ball milling where the whole vessel rotates or oscillate/vibrates whilst in operation, the vessel remains stationary in media milling. Movement of the balls is initiated by a stirring or agitating device, often represented by several discs mounted on a central shaft rotating at high velocities, 20 000 rpm and above, within the vessel. For this reason, media milling is sometimes known as “stirred-ball milling”. Media milling is a continuous process wherein the drug suspension is pumped through the milling chamber to effect size reduction of the suspended material.

https://www.sciencedirect.com/science/article/pii/S181808761...

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PL mielenie drobne młyn mieszadłowy atrytor mielenie bardzo drobne
EN fine milling stirred ball mill attritor mill very fine milling
http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.baztec...
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Są to młyny mieszadłowe, wibracyjne, planetarne, odśrodkowe oraz walcowe, zwane również prasami
This group includes stirred mills, vibratory, planetary, centrifugal and
roller mills also called roller presses

http://www.czasopismo.cuprum.wroc.pl/upfiles/journal-article...