FIELD: process engineering.
SUBSTANCE: invention relates to multistage devices for production and classification of mechanically activated powders of diverse materials of mineral, organic or technogenic formations, for example, black coal. Proposed mill comprises multistage rotor made up of vertical shaft with idle discs fitted thereon. Disc sizes increases along direction of processed raw stock transfer. Breaking elements made up of rings of diverse sizes and working surface profiles are arranged on outer surfaces of said discs to move and revolve about the axis.
EFFECT: power savings, longer life, higher reliability and stability of operation.
6 cl, 4 dwg
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