Abstract:In order to study the influence law of crusher chamber structure parameters on improving crusher performance, based on the economic index of crusher productivity and product particle size quality as the objective function, a mathematical optimization model of crusher double objective function is established to optimize the crusher cavity structure. According to the structural parameters of C900 crusher, the numerical optimization method is applied to study the influence of the bottom angle of moving cone, the length of parallel zone, precession angle and other key parameters on the performance of the crusher, and the optimal values of the structural parameters of C900 cavity are obtained. The performance of iron ore after coarse crushing was obtained by CT and mechanical test. The dynamic characteristics of the crusher were simulated by EDEM software. The simulation results are basically consistent with the numerical analysis results. The results show that when the base angle of the mantle is within a certain range, the productivity increases with the increase of the angle, while the product qualification rate decreases; When the length of parallel zone is in a certain range, with the increase of the length, the qualified rate of products increases, but the productivity decreases; Within a certain range, the precession angle decreases with the decrease of precession angle, and the productivity and product quality decrease.