This study examines the particle size and distribution of main chemical components gangue during crushing process. Coal mine was chosen as research object, its at various crusher discharge settings were examined through screening, grinding, composition testing, other methods. The findings demonstrate that characteristic in model has a logarithmic upward trend width port increases. In contrast, ...

The potential for a particle to crush under one-dimensional compression is critically dependent on the coordination number of that particle. Neighboring particles decrease deviatoric forces at contacts, which reduces tensile stress and subsequent fracture propagation in the crushable particle. This phenomenon is called “shielding effect”. In this paper, we model a sand particle as a spherical c...

This study investigates the effect of particle size on the compression characteristics of wet- (fluid-bed granulation - FBG) and dry-granulated (slugging - DGS) tableting mixtures. Particle-size distribution, flowability, compressibility, using the Heckel and Walker model, compactibility and elastic recovery as well as friability and disintegration were determined and compared between the two p...

This paper presents the results of X-ray CT imaging of the microstructure of sand particles subjected to high pressure one-dimensional compression leading to particle crushing. A high resolution X-ray CT machine capable of in situ imaging was employed to capture images of the whole volume of a sand sample subjected to compressive stresses up to 79.3 MPa. Images of the whole sample obtained at d...