FIELD: comminution of materials of mineral clinker. SUBSTANCE: ring roller mill has at least one grinding ring and at least one roll, opening for release of air and two holes as minimum to supply air. Hole for injection of air is located on each side of opening for release of air in direction of rotation of grinding ring. Opening for release of air can be located in section situated above roll and holes to supply air may be manufactured on each side of holes for release of air. EFFECT: decreased energy consumption, improved granulometric composition of material. 2 cl, 3 dwg
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