白象山选厂一段球磨机磨矿介质优化研究
Study on Optimization of Grinding Medium of One-stage Ball Mill in Baixiangshan Concentrator
常鲁平 1王荣林 1李明军 1梁朝杰 1杨松付 1冯建 1王欢 1郑思冉1
作者信息
摘要
马鞍山白象山选厂的矿石密度较大,软硬分布不均匀,总体韧性较大,现场一段磨矿经济技术指标不理想.为改善一段磨矿效果,从磨矿介质参数优化角度开展了试验研究,实验室试验推荐的一段磨机初装ϕ60、ϕ50、ϕ40、ϕ30 mm钢球级配为20∶30∶15∶35,补加球(ϕ60、ϕ50、ϕ40 mm)级配为50∶15∶35,最佳充填率为38%;现场一段磨矿介质优化后磨机利用系数提高42.76%,易选级别产率提高4.54个百分点,单位钢耗降低42.77%,单位电耗下降6.66%,节能、降耗、提质效果明显.
Abstract
The ore density of Baixiangshan concentrator in Maanshan is large,the soft and hard distri-bution is uneven,the overall toughness is large,and the economic and technical indicators of primary grind-ing in the field are not ideal.In order to improve the effect of primary grinding,the experimental study was carried out from the angle of grinding medium parameter optimization.The gradation ofϕ60,ϕ50,ϕ40 andϕ30 mm steel balls in the primary mill recommended by the laboratory test is 20∶30∶15∶35,and the grada-tion of supplementary balls(ϕ60,ϕ50 andϕ40 mm)is 50∶15∶35,and the optimum filling rate is 38%.Af-ter the optimization of the primary grinding medium,the utilization coefficient of the mill is increased by 42.76%,the yield of the easy-to-select grade is increased by 4.54 percentage points,the unit steel con-sumption is reduced by 42.77%,and the unit power consumption is reduced by 6.66%.The effect of energy saving,consumption reduction and quality improvement is obvious.
关键词
球磨机/磨矿介质/磨矿效率/钢耗/电耗Key words
ball mill/grinding medium/grinding efficiency/steel consumption/power consumption引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据