Influence of Two Mass Variables on Inertia Cone Crusher Performance and Optimization of Dynamic Balance

Jiayuan Cheng,Zilong Zhang,Tingzhi Ren,Xin Jin,Dawei Liu

doi:10.3390/min11020163

Abstract

Inertia cone crushers are widely used in complex ore mineral processing. The two mass variables (fixed cone mass and moving cone mass) affect the dynamic performance of the inertia cone crusher. Particularly the operative crushing force of the moving cone and the amplitude of the fixed cone are affected, and thus the energy consumption of the crusher. In this paper, the process of crushing steel slag is taken as a specific research object, to analyze the influence of two mass variables on the inertia cone crusher performance. A real-time dynamic model based on the multi-body dynamic (MBD) and the discrete element method (DEM) is established. Furthermore, the influence of the fixed cone mass and moving cone mass on the operative crushing force, amplitude and average power draw are explored by the design of simulation experiments. The predictive regression models of inertia cone crusher performance are obtained using response surface methodology (RSM). After increasing the fixed cone mass, the optimized amplitude, average power and moving cone mass are decreased by 37.1%, 33.1% and 10%, respectively, compared to without the adjustment. Finally, a more effective dynamic balancing mechanism of inertia cone crusher is achieved, which can utilize the kinetic energy of a balancer, and minimize the mass of the fixed and moving cone. The fixed cone mass and moving cone mass of a balancing crusher are decreased by 78.9% and 22.8%, respectively, compared to without the balancing mechanism.

Highlights

Inertia cone crushers are widely used in the secondary and tertiary crushing stages of complex ore processing, such as the comprehensive recovery of steel slag [1,2]
Combining with the above sections, it can be seen that when the crushing force achievement rate η f is over 90%, the decrease in amplitude As and average power Pa are very small with increasing fixed cone mass (FM)
Compared with the simulated experiment (Table A1), it can be seen that the optimized amplitude, average power and moving cone mass (MM) are decreased by 37.1%, 33.1% and 10.2%, respectively

Summary

Introduction

Inertia cone crushers are widely used in the secondary and tertiary crushing stages of complex ore processing, such as the comprehensive recovery of steel slag [1,2]. A mantle rotates and swings in the crushing chamber, which is due to an eccentric vibrator transferring the rotational motion to the main shaft. As it flows downward between the mantle and concave, the ore particle is crushed several times. The operative crushing force is less than the theoretical force, and the energy consumption increases [3]. At the condition of keeping other parameters invariable, the fixed cone mass and moving cone mass have a great impact on the operative crushing force, amplitude of fixed cone and energy consumption, whereas the increase in moving cone mass can increase the theoretical crushing force and amplitude directly

Methods

Results

Conclusion