Open Access

ARTICLE

Erosion Analysis of Static Components in Slurry Pumps Based on Reverse Modeling

Zhengjing Shen^1,2,*, Fanqiang Kong¹, Yu Liu¹, Jilai Zeng¹, Wengang Yang¹, Jiangbo Wu^1,2

1 School of College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
2 Key Laboratory of Advanced Pumps, Valves and Fluid Control System, Ministry of Education, Lanzhou, 730050, China

* Corresponding Author: Zhengjing Shen. Email:

(This article belongs to the Special Issue: Multiphase Flow and Vortex Dynamics in Fluid Machinery)

Fluid Dynamics & Materials Processing 2025, 21(3), 589-603. https://doi.org/10.32604/fdmp.2024.058727

Received 19 September 2024; Accepted 04 December 2024; Issue published 01 April 2025

Abstract

Erosion in slurry pumps presents a persistent challenge in industrial applications. This study examines the erosion of the static components of a 150ZJ-C42 centrifugal slurry pump, currently in operation at a beneficiation plant, under varying particle conditions. Utilizing high-precision three-dimensional reverse engineering, the pump’s flow passage geometry was reconstructed to facilitate detailed erosion analysis. Focusing on the front and rear baffles of the pump chamber, as well as the volute, erosion patterns were analyzed for different particle volume concentrations and sizes. The results reveal that the highest erosion damage consistently occurs near the volute tongue, with wear being most severe in regions adjacent to the partition plate near the rear cover. Erosion damage intensity in this area correlates positively with particle diameter. Notably, the average erosion rate in the volute surpasses that of the front and rear chamber liners, reaching a value as high as 6.03 × 10⁻⁷ kg·m⁻²·s⁻¹ at a particle concentration of 9% and diameter of 0.1 mm, adversely impacting pump stability. For the pump chamber baffles, increased erosion is observed at a particle diameter of 0.05 mm under constant volume concentration conditions, while higher particle concentrations exacerbate localized erosion.

---

Graphic Abstract

---

Keywords

---