Reduction of Surface Roughness and Rounding of Limestone Particles in a Stirred Media Mill

摘要

The process and end-use behavior of ground material not only depends on the particle size or specific surface but is also influenced by the particle shape. Particle shaping can be done in a stirred media mill if the stress intensity is not enough to break the particle, so mainly abrasion and chipping are carried out. Low-stress intensity milling is presented in a dry stirred media mill to reveal the particle base rounding and surface roughness reduction. The main parameters of the product-related stress model are connected to the descriptive parameters of particle shaping. Batch grinding of limestone particles with narrow size distribution was carried out with different milling parameters. The product-related stress model can be used for the description of particle shaping.