VERTICAL ROLLER MILL

摘要

Provided is a vertical roller mill (100) equipped with a rotary classifier (40) for causing a plurality of classification blades (41) provided above a rotary table and positioned around an axis (X) to rotate around the axis (X), wherein: of the solid fuel pulverized by a roller, the rotary classifier (40) guides solid fuel fine powder having a smaller diameter than a prescribed particle diameter from an outer-circumferential-side space (S1) to an inner-circumferential-side space (S2) surrounded by the plurality of classification blades (41), and suppresses, by collision with the plurality of classification blades (41), the intrusion into the inner-circumferential-side space (S2) of solid fuel coarse powder having a larger diameter than the prescribed particle diameter; and each of the plurality of classification blades (41) is shaped in a manner such that there is no interference between the scattering direction (Fo1, Fo2) in which the coarse powder that collided with the classification blades (41) scatters and the intake direction (Fi1, Fi2) in which the fine powder is guided into the inner-circumferential-side space (S2), and the scattering direction (Fo1, Fo2) is oriented upward relative to the horizontal direction.