A roller mill for cement and blast furnace slag in theory and practice

Loesche, as the first manufacturer of spring loaded roller grinding mills, have installed vertical airswept mills with dynamic classifiers since 1928 throughout the world. The mills are applied for grinding cement raw material, limestone, coal and other minerals. They have repeatedly demonstrated that the power consumption is significantly lower than with conventional ball mill systems for comparable product quality. This is due to the high efficiency of the grinding system. In an unloaded condition, the rollers of the mill do not touch the table. In this case the absorbed power is determined by the efficiency of the gear unit, only.