Air jet mill
Atritor
Compressed air is most commonly used but steam is favoured for some applications and inert gases may offer advantages for particularly sensitive materials or materials with explosion risks.
The feed material is inspirated by a small proportion of the compressed gas through a venturi into the grinding chamber where numerous angled nozzles accelerate the material into particle-particle impact. There are no moving parts in the mill and no mechanical forces are applied to the grinding process.
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