中国矿山工程

In view of the problems that it is difficult to observe the movement state of ore particles inside the semi-autogenous mill and the unclear distribution of particles, the discrete element method is used to study and compare the influence of non-spherical and spherical ore particles on axial segregation in the semi-autogenous mill. The results show that non-spherical particles increase the dynamic angle of repose of the particle bed, and the motion state is more intense, and the particles in the cylinder have greater kinetic energy. The difference in particle size leads to the axial segregation phenomenon that large particles accumulate in the area near the end cover of the cylinder, while small particles accumulate in the middle area of the cylinder. However, the axial segregation phenomenon of non-spherical particles is more obvious than that of spherical particles.