Molino de rodillos

Molino de rodillos con una pista de molienda casi horizontal (2) sobre un plato de molienda giratorio (3), con cilindros molturadoresgiratorios, estacionarios (4), que ruedan sobre un lecho de molienda formado por material de molienda a triturarsobre la pista de molienda (2), y con rodillos de preparación giratorios, estacionarios (6), entre los cilindrosmolturadores (4), que comprimen el material de molienda y evacuan el aire del mismo, caracterizado porque los rodillos de preparación (6) están colocados de tal manera que los rodillos de preparación (6) ruedan por encimade y comprimen completamente el material de molienda llevado en espiral hasta los cilindros molturadores (4). A roller mill, particularly an air swept roller mill of the LOESCHE type. The roller mill is preferably provided for the comminution of cement clinker or granulated blast furnace slag and comprises on a grinding track of a rotating grinding pan stationary, rotating grinding rollers and between the grinding rollers stationary, rotatable preparation rollers which compress and remove air from the grinding bed. In order to increase the efficiency of the grinding process and at the same time to reduce the energy requirement the position of the preparation rollers is changed in such a way that the grinding material fed spirally to the grinding rollers is completely rolled over and compressed by the previously arranged preparation rollers. The preparation rollers are, seen in a top view of the grinding pan, positioned radially in the direction of the grinding pan center and roll with their running surfaces on a smaller running ring than the associated grinding rollers.