The invention discloses a semi-autogenous mill crushing capacity evaluation method based on DEM
simulation, and relates to the technical field of
mineral processing, and the method comprises the following steps: measuring discrete element calculation required parameters of ores, steel balls and lining plate materials, and establishing a semi-autogenous mill geometric model; importing a geometric model of the semi-autogenous mill, and initializing discrete element calculation required parameters and
particle processing parameters; a DEM
simulation experiment is carried out, when
simulation time reaches integral multiples of the step length, all particle information in a
simulation system is traversed, particles meeting the judgment condition are removed, the
mass of removed ore particles is obtained, new particles meeting the set condition are added, abnormal particles are processed, and the ore particles are obtained. The
residual mass of the ore particles with the particle size set by the
system within the simulation time and the
mass of the removed ore particles at each moment are obtained, the removal rate of the ore particles at each moment in the simulation process is calculated, the crushing capacity
evaluation result of the semi-autogenous mill is obtained, the evaluation calculation time is short, the accuracy is high, and the problem of
small particle deposition is effectively solved.