摘要
针对安徽白象山铁选厂一段球磨指标进行优化试验研究,对矿石进行力学性质测定、球磨机给矿筛分,按照段式球径半理论公式初步确定推荐方案为m(Φ60):m(Φ50):m(Φ40):m(Φ30)=20:30:15:35,设置偏大及偏小方案作为对比,通过磨矿对比试验得出,推荐方案较现场方案+0.15 mm级别产率下降11.24百分点,(-0.15+0.10)mm、(-0.074+0.019)mm级别产率分别提高6.55百分点、9.88百分点,磨矿技术效率提高7.57百分点;离散元仿真结果表明,推荐方案法向碰撞能量较现场方案仅降低4.15百分点,切向碰撞能量较现场提高69.04百分点,综合比较推荐方案全面优于现场方案。
A pilot study was conducted to optimize the ball milling index of primary stage of the iron processing plant in Baixiangshan,Anhui Province,by measuring the mechanical properties of the ore,screening before ball mill feed.The recommended solution was initially determined as m(Φ60):m(Φ50):m(Φ40):m(Φ30)=20:30:15:35 according to the semi-theoretical formula of segmental ball diameter,and set the big and small solutions as a comparison,and through the grinding comparison test,it was found that the yield of+0.15 mm level decreases by 11.24%,the yield of-0.15+0.10 mm and-0.074+0.019 mm level increases by 6.55%and 9.88%respectively,and the technical efficiency of grinding increases by 7.57%.The discrete element simulation results show that the normal collision energy of the recommended solution is only 4.15%lower than that of the field solution.The normal collision energy of the recommended solution is only 4.15%lower than that of the on-site solution,and the tangential collision energy is 69.04%higher than that of the on-site solution.The recommended solution is better than the on-site solution in a comprehensive comparison.
作者
任英东
肖庆飞
石贵明
谢浩松
张志鹏
REN Yingdong;XIAO Qingfei;SHI Guiming;XIE Haosong;ZHANG Zhipeng(School of Land and Resource Engineering,Kunming University of Technology,Kunming 650093,Yunnan,China;State(Beijing)Key Laboratory of Automatic Control Technology of Miningand Metal lurgical Processes,Beijing 100070,China;State Key Laboratory of Clean Utilization of Complex Nonferrous Metal Resources,Ministry of Provincial Affairs,Kunming 650093,Yunnan,China;School of Chemistry,Biology and Environment,Yuxi Teachers College,Yuxi 653100,Yunnan,China)
出处
《矿产保护与利用》
2022年第2期131-138,共8页
Conservation and Utilization of Mineral Resources
基金
国家自然科学基金地区科学基金资助(51964044)
云南省地方高校(部分)联合专项(2018FH001-051)
云南省教育厅基金(2019J0738)。
关键词
铁矿
磨矿
精确化配球
指标优化
离散元
iron ore
grinding
precise ball distribution
index optimization
discrete elements
