米拉多铜矿球磨机钢球配比优化研究  

Optimization of Steel Ball Ratio of Ball Mill in Mirador Copper Mine

作　　者：代献仁 肖庆飞[2] 王国彬 李云啸 郭运鑫 金赛珍 DAI Xianren;XIAO Qingfei;WANG Guobin;LI Yunxiao;GUO Yunxin;JIN Saizhen(China Railway Construction Tongguan Investment Co.,Ltd.,Tongling 244000,China;Faculty of Land Re-source Engineering,Kunming University of Science and Technology,Kunming 650093,China;Anhui Tongguan Industrial Technology Research Institute Co.,Ltd,Tongling 244000,China;Tongling Nonferrous Metals Group Holding Co.,Ltd.,Tongling 244000,China;State Key Laboratory of Mineral Processing Science and Technolo-gy,Beijing 102628,China)

机构地区：[1]中铁建铜冠投资有限公司,安徽铜陵244000 [2]昆明理工大学国土资源工程学院,云南昆明650093 [3]安徽铜冠产业技术研究院有限责任公司,安徽铜陵244000 [4]铜陵有色金属集团股份有限公司,安徽铜陵244000 [5]矿物加工科学与技术国家重点实验室,北京102628

出　　处：《铜业工程》2024年第6期121-126,共6页Copper Engineering

基　　金：国家自然科学基金项目(52374269);矿物加工科学与技术国家重点实验室开放基金项目(BGRIMM-KJSKL-2023-09)资助。

摘　　要：针对米拉多铜矿磨矿产品粒度特性较差,导致粗选尾矿中+0.15mm粒级含铜较高,致使该粒级铜损失占全部铜损失40%以上的问题,在矿石力学强度的基础上,基于球径半理论公式和精确化装补球原理,推导出了一段磨矿作业中钢球的最佳配比,即推荐钢球初装配比方案为m(Φ80 mm)︰m(Φ60 mm)︰m(Φ50 mm)︰m(Φ40 mm)︰m(Φ30 mm)=15︰20︰25︰20︰20,并设计了现场钢球初装配比方案、偏大钢球初装配比方案和偏小钢球初装配比方案3种方案作为对照组。将4种方案分别在实验室Φ240 mm×300 mm球磨机和Φ450 mm×450 mm球磨机中进行试验。研究结果表明:推荐钢球初装配比方案可提高-0.15 mm粒级产率,且该方案下的-0.15 mm粒级产率最高,分别达到78.24%和81.48%,与现场钢球初装配比方案相比,该粒级产率分别提高了13.39和13.35个百分点,达到了理想的实验结果。Due to the poor particle size characteristics of the grinding products in Mirador Copper Mine,which leads to a high copper content in the+0.15 mm particle size fraction in the coarse tailings,resulting in more than 40%of the total copper loss being attributed to this particle size fraction.Based on the study of ore mechanical strength,using the semi-theoretical formula of ball diameter and the principle of precise ball loading and replenishment,the optimal steel ball proportion for the primary grinding operation was derived.Specifically,the initial steel ball proportioning scheme recommended is m(Φ80 mm)∶m(Φ60 mm)∶m(Φ50 mm)∶m(Φ40 mm)∶m(Φ30 mm)=15∶20∶25∶20∶20.Another three schemes were designed as control groups:the initial steel ball proportioning scheme at the site,the initial steel ball proportioning scheme with larger balls,and the initial steel ball proportioning scheme with smaller balls.These four schemes were tested separately in laboratory ball mills ofΦ240 mm×300 mm andΦ450 mm×450 mm.The results of both groups of tests showed that the initial steel ball proportioning scheme recommended could increase the content of the-0.15 mm particle size fraction,and the yields of the-0.15 mm particle size fraction were the highest,reaching 78.24%and 81.48%respectively.Compared with the initial steel ball proportioning scheme at the site,the yields of this particle size fraction were higher by 13.39 and 13.35 percentage points,respectively,achieving the desired experimental results.

关 键 词：米拉多铜矿 球磨机 磨矿 钢球 配比方案 

分 类 号：TD921[矿业工程—选矿]