Compressibility and flow properties of a cohesive limestone powder in a medium pressure range

摘要

The most important design parameters for roller presses can be referred to flow characteristic of bulk materials. Usually the flow properties are measured in the low stress range 1-50 kPa at the shear rate about 1 mm/min. But this does not fit the stressing conditions in the roller press. Press shear cell was used for shear tests with cohesive limestone powder from Gummern in the so-called medium pressure range 50-1000 kPa.