河北某铁矿塔磨机粗磨磨矿指标优化研究  

Study on Optimization of Rough Grinding Index of Tower Mill in an Iron Mine of Hebei

作　　者：吕虹序 王子扬 侯英 陈鹏 李晨 邹存存 LYU Hongxu;WANG Ziyang;HOU Ying;CHEN Peng;LI Chen;ZOU Cuncun(School of Mining Engineering,University of Science and Technology Liaoning)

机构地区：[1]辽宁科技大学矿业工程学院

出　　处：《现代矿业》2024年第5期115-118,123,共5页Modern Mining

基　　金：辽宁省教育厅项目(编号:LJKFZ20220195)。

摘　　要：河北某铁矿为了降低塔磨机磨矿能耗,以高压辊磨机粉碎后的预选精矿为研究对象,进行了塔磨机磨矿操作参数对磨矿指标的影响研究。研究结果表明:优化后的操作参数为磨矿时间240 s,螺旋搅拌器转速320 r/min,介质充填率20.77%,磨矿浓度65%,料球比0.15,介质配比(φ8 mm钢球质量占比)100%;在最优参数下,获得了磨机-0.074 mm利用系数为0.916 t/(m~3.h)和磨矿能耗为42.82(kW.h)/t的磨矿指标,优化后磨机-0.074 mm利用系数提高1.55%,磨矿能耗降低11.58%。该研究结果可为塔磨机磨矿能耗的降低和磨矿操作参数的选取提供有益参考。In order to reduce the grinding energy consumption of tower mill in an iron mine of Hebei Province,the influence of grinding operation parameters of tower mill on grinding index was studied by taking the pre-concentrate crushed by high pressure roller mill as the research object.The results show that the optimized operating parameters are as follows:grinding time 240 s,screw stirrer speed 320 r/min,me⁃dium filling rate 20.77%,grinding concentration 65%,material-ball ratio 0.15,medium ratio(mass ratio ofϕ8 mm steel ball)100%.Under the optimal parameters,the grinding indexes of the mill with utilization co⁃efficient of-0.074 mm of 0.916 t/(m3∙h)and grinding energy consumption of 42.82(kW∙h)/t were obtained.After optimization,the mill-0.074 mm utilization coefficient is increased by 1.55%,and the grinding ener⁃gy consumption is reduced by 11.58%.The results of this study can provide a useful reference for the reduc⁃tion of grinding energy consumption and the selection of grinding operation parameters of tower mill.

关 键 词：塔磨机 磨矿因素 磨矿指标 

分 类 号：TD453[矿业工程—矿山机电]