Collaborative optimization of screening efficiency and screen surface load — Part I: Modeling and evaluation--颗粒学报PARTICUOLOGY

Xia, X., Jing, W., Zhang, Z., Wang, L., & Zhang, H. (2022). Collaborative optimization of screening efficiency and screen surface load — Part I: Modeling and evaluation. Particuology, 69, 77-87. https://doi.org/10.1016/j.partic.2021.11.006

Collaborative optimization of screening efficiency and screen surface load — Part I: Modeling and evaluation

Xuhui Xia ¹, Weimin Jing ¹, Zelin Zhang ¹, Lei Wang¹, Huan Zhang^*

Key Laboratory of Metallurgical Equipment and Control Technology, Wuhan University of Science and Technology, Wuhan 430081, China

10.1016/j.partic.2021.11.006

Volume 69, October 2022, Pages 77-87

Received 31 August 2021, Revised 22 October 2021, Accepted 12 November 2021, Available online 1 December 2021, Version of Record 24 December 2021.

E-mail: zhanghuan@wust.edu.cn

Highlights

• Built the mathematical models of screening efficiency (SE) and screen surface load (SSL).

• Proposed a collaborative optimization method for SE and SSL.

• Optimized the SE and SSL for the linear vibrating screen.

Abstract

The screen surface load (SSL) caused by granular materials is an important factor affecting the structural performance of vibrating screen. Based on virtual experiment, a multi-objective collaborative optimization method is proposed to control the SSL under high screening efficiency (SE) in this work. Firstly, a DEM model was established to study the influence of process parameters on SE and SSL. Secondly, the NSGA-II (Non-dominated Sorting Genetic Algorithm) was employed to optimize the screening parameters with both SE and SSL as targets. The optimization method proves to be effective implementing on a linear vibrating screening. With SE equals to 98.5%, the SSL optimizable range is 39.2%. While compromising the SE to 88.7%, the SSL optimizable range improves to 48.6%. The result shows that the collaborative optimization could effectively control the SSL while maintaining a high SE, which is of great significance to improve the service life of screen surface and screen body.

Graphical abstract

Keywords

Vibrating screen; Discrete element method; Screening efficiency; Screen surface load; Collaborative optimization

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