Abstract
The cone crusher is the main equipment in the particle crushing process. The productivity of the cone crusher is determined by the motion characteristics of particles passing through the crushing chamber. In order to accurately describe the motion characteristics of the particles, the influence of the spatial compound motion of the mantle rotates around the central axis of the cone crusher and its central axis on the motion characteristics of the particles is investigated, then the improved motion model is established. Through the coordinate system transformation matrix, the motion characteristics of the particles including spatial sliding, free-falling, and spatial compound falling are solved. The applicability and accuracy of the improved model in describing the motion characteristics of the particle were verified through the experiment using a reduced-scale experimental cone crusher to simulate the motion characteristics of the particle. Based on the improved model, the motion characteristics of the particles in the CF11 hydraulic cone crusher can be simulated. With the decrease in height, the motion characteristics of particles gradually change from spatial sliding to spatial compound falling and finally to free-falling. The particles deflect circumferentially around the central axis of the cone crusher. The circumferential deflection of particles is directly related to the motion characteristics including spatial sliding and spatial compound falling. The improved model provides a theoretical basis for the high energy design of the crushing chamber and productivity improvement of the cone crusher.
Highlights
The cone crusher is a high-efficiency particle crushing equipment that has the advantages of high productivity, good crushing product quality, and high energy utilization [1]
The improved model improves the simulation accuracy of the motion characteristics of particles in the crushing chamber of the cone crusher, which lays a theoretical foundation for the development of the high-energy crushing chamber and the optimization of parameters
Due to the constraint imposed by the equipment structure, the nature of the power drive, and the friction created by broken particles, the mantle is determined to perform a spatial compound motion that rotates around the central axis of the cone crusher and its central axis
Summary
The cone crusher is a high-efficiency particle crushing equipment that has the advantages of high productivity, good crushing product quality, and high energy utilization [1]. Productivity is one of the essential performance indexes of cone crushers, determined by the motion characteristics of particles passing through the crushing chamber in the dynamic crushing process. The improved model can simulate the motion characteristics of particles through the structural and operating parameters of the cone crusher and provide theoretical guidance for the design of the crushing chamber and the optimization of production performance. Herbst et al [12] firstly used the DEM to simulate the crushing process of the cone crusher, and studied the motion characteristics of particles in the one-side crushing chamber. The improved model improves the simulation accuracy of the motion characteristics of particles in the crushing chamber of the cone crusher, which lays a theoretical foundation for the development of the high-energy crushing chamber and the optimization of parameters
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