摘要
为提高矿山磨矿效率、实现节能降耗,以某铁矿高压辊磨—预选精矿为研究对象,分别采用球磨机和塔磨机为粗磨设备开展磨矿试验。结果表明:①采用球磨机磨矿,磨矿时间为200 s时,新生成-0.074 mm产品的能耗为150.08 kW·h/t,磨机-0.074 mm利用系数为0.586 t/(m^(3)·h);采用塔磨机磨矿,磨矿时间为600 s时,新生成-0.074 mm产品的能耗为138.53 kW·h/t,磨机-0.074 mm利用系数为0.195 t/(m^(3)·h)。2种磨矿方式的产品各粒级产率差异主要集中在+0.150 mm和0.150~0.074 mm。②优化试验确定适宜的塔磨工艺参数为:磨矿时间300 s、磨矿浓度60%、搅拌器转速300 r/min、介质充填率16.15%、料球比0.1664。该条件下,磨机-0.074 mm利用系数为0.625 t/(m^(3)·h),新生成-0.074 mm产品的能耗为53.62 kW·h/t。与球磨机相比,-0.074 mm利用系数提高6.66%,新生成-0.074 mm产品的能耗降低64.27%。研究结果可为塔磨机的应用提供有益参考。
In order to improve the grinding efficiency of the mine and realize energy saving and consumption reduction,taking the high pressure roller milling-preconcentration concentrate of an iron mine as the research object,the ball mill and tower mill were used as the rough grinding equipment to carry out the grinding test.The results showed that:①when the ball mill is used for grinding and the grinding time is 200 s,the energy consumption of the newly generated-0.074 mm product is 150.08 kW·h/t,and the utilization coefficient of the mill-0.074 mm is 0.586 t/(m^(3)·h).When the grinding time is 600 s,the energy consumption of the newly-0.074 mm product is 138.53 kW·h/t,and the utilization coefficient of the mill-0.074 mm is 0.195 t/(m^(3)·h).The yield difference of each grade of the products of the two grinding methods is mainly concentrated in+0.150 mm and 0.150~0.074 mm.②The appropriate tower grinding process parameters were determined by the optimization test as follow:grinding time of 300 s,grinding concentration of 60%,stirrer speed of 300 r/min,medium filling rate of 16.15%,and material-ball ratio of 0.1664.Under this condition,-0.074 mm utilization coefficient of the mill is 0.625 t/(m^(3)·h),and the energy consumption of the newly generated-0.074 mm product is 53.62 kW·h/t.Compared with the ball mill,the utilization coefficient of-0.074 mm is increased by 6.66%,and the energy consumption of the newly generated-0.074 mm product is reduced by 64.27%.The research results could provide useful reference for the application of tower mill.
作者
韩呈
王子扬
侯英
陈来保
HAN Cheng;WANG Ziyang;HOU Ying;CHEN Laibao(Sinosteel NMC Intelligent Equipment Co.,Ltd.,Maanshan 243000,China;School of Mining Engineering,University of Science and Technology Liaoning,Anshan 114051,China)
出处
《金属矿山》
CAS
北大核心
2023年第3期114-119,共6页
Metal Mine
基金
辽宁省教育厅项目(编号:LJKFZ20220195)。
关键词
塔磨机
球磨机
磨矿功耗
节能降耗
tower mill
ball mill
grinding power consumption
energy saving and consumption reduction
