FIELD: physics.
SUBSTANCE: invention relates to a grinder to reduce the size of cryogenic particles. Proposed grinder comprises inlet that forms inlet flow section, outlet, flow channel to communicate fluid between inlet and outlet, first and second rollers located downstream of inlet. Between the first roller and the second roller there is a gap. Flow channel comprises first intermediate channel and second intermediate channel. Second intermediate channel does not include the first intermediate channel. First intermediate channel comprises said gap. Second intermediate channel includes an inlet of the second intermediate channel located proximally and upstream of the gap and continuing in the direction upstream of the gap. Second intermediate channel comprises outlet of the second intermediate channel located downstream of the gap.
EFFECT: as a result, a continuous process of cryogenic particles grinding is provided.
16 cl, 10 dwg
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