矿产保护与利用2025，Vol.45Issue(1)：28-38,11.DOI:10.13779/j.cnki.issn1001-0076.2024.08.019
基于磨矿动力学与离散元分析的磨矿介质优化实验研究
Grinding Medium Optimization Based on Grinding Kinetics and Discrete Element Analysis
摘要
Abstract
In this study,the effects of steel balls and steel cylpebs as the grinding media on the crushing behavior and energy utilization of multi-grain ores were investigated using grinding dynamics and discrete element method(DEM)simulation,and industrial experimental research was carried out based on the results.The results of grinding kinetics show that the effect of steel balls on the crushing rate of the coarse grain fraction was better than that of steel cylpebs.The content of+0.15 mm in the grinding product is reduced by 0.98%and-0.074 mm increased by 5.66%in the case of steel ball compared with that of steel cylpebs as the grinding medium.DEM analysis showed that the motion state of steel balls was more active than that of steel cylpebs.The percentage of energy used for ore crushing using steel balls and steel cylpebs as the grinding medium was 65.41%and 61.29%,respectively,with the former being 4.12%higher than the latter so that the effective energy utilization of steel balls for crushing the ore is higher.Based on the above results,after using steel balls as grinding media in the Dahongshan Iron Mine,the overflow-0.074 mm content of the cyclone increased from 74.00%to 81.71%,an increase of 7.71%,the unit steel consumption decreased by 9.52%,from 0.63 kg/t to 0.57 kg/t,and the unit power consumption decreased by 11.61%,from 11.46 kW·h/t to 10.13 kW·h/t.This study verified the validity of the steel ball scheme through grinding dynamics and discrete element analysis experiments and verified its accuracy through industrial tests.关键词
磨矿动力学/离散元仿真/磨矿介质/大红山铁矿/钢球/钢段Key words
grinding kinetics/discrete element simulation/grinding medium/Dahongshan iron mine/steel ball/steel cylpebs分类
矿山工程引用本文复制引用
肖庆飞,孙博远,金赛珍,武煜凯,王梦涛..基于磨矿动力学与离散元分析的磨矿介质优化实验研究[J].矿产保护与利用,2025,45(1):28-38,11.基金项目
国家自然科学基金面上项目(52374269) （52374269）
矿冶过程智能优化制造全国重点实验室开放基金(BGRIMM-KZSKL-2023-2) （BGRIMM-KZSKL-2023-2）
院青年科技创新基金项目(04-2335) （04-2335）
