THE INFLUENCE OF THE ROLLER DIAMETER ON THE POWER-CONSUMPTION OF HIGH-PRESSURE GRINDING ROLLS

When high-pressure grinding rolls are being designed the roller diameter is governed very substantially by the particle size composition of the feed material. In addition to a series of other considerations it should be borne in mind that the choice of roller diameter also affects the power consumption. With the aid of simple model for calculating performance it is proved that the power consumption increases with increasing roller diameter. Finally, it is claimed that higher specific pressures can be expected when using larger rollers to achieve comparable comminution results.