Novel design modeling for vertical shaft impactors

Abstract

The purpose of this article is to present a novel mathematical-physical model for the design of a new conical-shaped centrifugal rotor for vertical shaft impact crushers (VSI's) to reduce energy consumption. Many models of flat disced centrifugal rotors have been developed, however, these models do not use mathematical-physical relations to define the particle trajectory on the centrifugal rotor, which corresponds to the curvature of the shape of the centrifugal rotor chambers. The determination of particle movement on the outer mantel of a rotating conical-shaped centrifugal rotor depends on cone geometry, feed material, and operation parameters, which were thoroughly studied to design the new conical rotor. The equations which describe the particle motion on the centrifugal rotor are derived and utilized. The mathematical-physical relation equations were analyzed and given as a solvable model of the particle motion simulation using a program developed in C++ using Microsoft Visual Studio. It can be concluded that in order to improve existing empirical designs, energy consumption must be reduced by improving the material flow rate and avoiding material clogging inside the centrifugal rotor.