Abstract
In this study, the DEM (Discrete element method) bonded particle model is constructed to simulate the crushing process of iron ore based on the Apollonian sphere packing (ASP) method in a cone crusher. The effects of operation parameters (eccentric speed (ω), closed side setting (lcss) and eccentric angle (α)) on the macroscopic characteristics (throughput, specific energy, crushing rate, product size distribution) and microscopic characteristics (mechanical behaviors between sub-particles and between meta-particles) are systematically investigated, and their quantitative correlations are established. Meanwhile, the corresponding mechanisms have been identified by analyzing the circulation time. The results show that with alterations in operation parameters, the variation trend between production size distribution and crushing rate is consistent, while opposite trend between throughput and crushing rate is formed. The crushing rate is higher and the mantle wear is more severe when the normal/tangential forces exerted on particles are larger. The effects of the eccentric speed on the residence time of particles in the crushing chamber can be indicated by its influence on the number of circulations, while the effects of the closed side setting and eccentric angle can be reflected by changing the volume of the crushing chamber. The increase of particle residence time is beneficial for improving the crushing rate, while it simultaneously reduces the throughput.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.