Sustainable Mining and Metallurgy

Impact velocity and time are important parameters for the crusher. In order to optimize the working parameters of the crusher, reduce energy consumption and improve efficiency, this paper took the green sandstone as the research object, simplified the simulation of the impact model, and used the engineering simulation software ANSYS-Workbench based on finite element analysis to carry out the transient analysis of the impact process of the green sandstone, and studied the rock impact time under different falling heights. The results show that the change of acceleration during the impact process of green sandstone can be divided into four stages of the unchanged stage before contact, the rapid increase stage, the slow decrease stage, and the unchanged stage after contact; the impact time of green sandstone is short, generally millisecond, and increases with the increase of falling height. The results have certain theoretical guiding significance for the design optimization of crusher and other machinery.