基于CFD-DEM方法的矿浆泵磨损特性研究  

Research on Wear Characteristics of Slurry Pump Based on CFD-DEM Method

作　　者：李钟[1] 金伟 王予琪 杨浩[2] 张明[1] 彭赛锋 LI Zhong;JIN Wei;WANG Yuqi;YANG Hao;ZHANG Ming;PENG Saifeng(State Key Laboratory of Exploitation and Utilization of Deep-sea Mineral Resources,Changsha Research Institute of Mining and Metallurgy Co Ltd,Changsha 410012,Hunan,China;Zhejiang Sci-Tech University,Hangzhou 310018,Zhejiang,China)

机构地区：[1]长沙矿冶研究院有限责任公司、深海矿产资源开发利用技术国家重点实验室,湖南长沙410012 [2]浙江理工大学,浙江杭州310018

出　　处：《矿冶工程》2023年第1期16-20,共5页Mining and Metallurgical Engineering

基　　金：国家重点研发计划(2021YFC2801701-01);中国五矿集团科技专项——战略前沿技术研究(2019ZXA02)。

摘　　要：基于CFD-DEM耦合的方法,同时结合Archard磨损模型,对小流量矿浆泵在不同流量、不同颗粒粒径等工况下进行数值模拟,分析了泵内颗粒运动规律、颗粒在不同流域的分布情况以及颗粒与泵过流部件的碰撞规律,研究了矿浆泵内过流部件尤其是蜗壳的磨损特性。结果显示,蜗壳存在一定堵塞,蜗壳靠近隔舌段颗粒形成低速堵塞区,蜗壳的磨损主要集中在上半部分及隔舌附近的位置;随着流量增大,颗粒速度增大,颗粒与壁面碰撞时动能增大,矿浆泵体磨损情况增强;小粒径颗粒工况下磨损情况更严重。By using CFD-DEM coupling approach and Archard wear model, a slurry pump with small flow was numerically simulated under the conditions including different flow rates and particle sizes. Based on the analysis of the movement law of particles in the pump, the distribution of particles in different regions of pump and the collision between particles and wetted parts of the pump, the wear characteristics of wetted parts in the slurry pump, especially the volute were studied. The results show that there is some blockage in the volute approaching the tongue region due to a slow flow rate of particles. It is found that wear of the volute is mainly concentrated on the upper part and near the tongue region. With the increase in the flow rate and velocity of particles, the kinetic energy of the particles collide with the pump wall increases, resulting in serious wear on the body of slurry pump. And the wear will become more serious by the particles with small grain size.

关 键 词：矿浆泵 蜗壳 磨损 CFD-DEM耦合 粗颗粒 

分 类 号：TD857[矿业工程—金属矿开采]