Study on Grinding Medium Ratio Optimization of Φ2.4×3.6 m Ball Mill in Yimen Copper Industry
Received date: 2022-08-28
Revised date: 2022-11-22
Online published: 2023-03-27
With the rapid development of China’s society economy，the demand for copper mineral resources in various fields of our country is increasing day by day，and more and more “poor，fine and miscellaneous” copper resources are being mined，which makes the aim of the grinding operation changes to as much as possible to reduce the yield of over-fine grades and over-coarse grades in grinding products，and increase the yield of intermediate grades of grinding products.At present，there are some problems in the grinding operation of Yimen Copper Co.，Ltd.，such as unreasonable ball filling system of Φ2.4×3.6 m ball mill，low fineness of grinding products，low efficiency of classifier and high circulating load.In view of the above problems，based on the mechanical properties such as ore density，uniaxial compressive strength，elastic modulus and Poisson’s ratio，and the particle size distribution of grinding cycle products such as belt feeding，classifier overflow，classifier sand return and ball mill discharge，the calculation formulas for the ball diameter of various ball mill steel balls that are widely used at home and abroad was compared and analyzed.The semi-theoretical formula of Duan’s ball diameter was adopted to calculate the recommended initial loading medium ratio.Finally，the initial loading plan is determined as：Φ80 mm∶Φ60 mm∶Φ50 mm∶Φ40 mm=30%∶25%∶25%∶20%.And four groups of schemes was set up，namely field scheme，recommended scheme，oversized scheme，and undersized scheme， to carry out laboratory grinding comparison test.The grade yield，grinding fineness and grinding technical efficiency were used as evaluation indicators to study the optimization of the size and ratio of steel balls in the mill.After optimization，compared with the on-site scheme，the yield of +0.150 mm over-coarse grades of the recommended scheme is reduced by 2.38 percentage points，the grinding fineness of -0.074 mm is increased by 5.14 percentage points，and the yield of the intermediate grade （-0.150+0.010 mm） is increased by 1.08 percen-tage points.The efficiency of grinding technology increased by 3.39 percentage points.It shows that using the recommended ratio of initially charged steel balls as the grinding medium of Yimen Copper’s Φ2.4×3.6 m ball mill has obvious optimization effect.On the premise of improving the grinding fineness，the intermediate grade yield is increased，and the over-coarse grade is reduced.The production rate can effectively improve the effi-ciency of grinding technology，and achieve the improvement of grinding technical indicators of the dressing plant，which is of great significance to improving the efficiency and reducing consumption of the dressing plant.
Yingbao YANG , Yanxiong FU , Yingjie PEI , Qiang ZHOU , Qingfei XIAO . Study on Grinding Medium Ratio Optimization of Φ2.4×3.6 m Ball Mill in Yimen Copper Industry[J]. Gold Science and Technology, 2023 , 31(1) : 163 -170 . DOI: 10.11872/j.issn.1005-2518.2023.01.112
| null | Cai Youxing， Yang Qian，1995. Present situation and development trend of non-metallic ore beneficiation and processing［J］. Hunan Nonferrous Metals，（1）：24-28. |
| null | Cao Y， Tong X， Xie X，et al，2021.Effects of grinding media on the flotation performance of cassiterite［J］. Minerals Engineering，（1）：106919. |
| null | Chang Fuqiang， Niu Nannan， Liang Xianzhen，2022.Optimization of the steel ball ratio of the second stage ball mill in the Luoyang molybdenum industry beneficiation plant［J］.Mo-dern Mining，38（3）：125-128，164. |
| null | Chen Cheng， Lin Ming， Jiang Ying，2019.Effect of size distribution of grinding product for vanadium-titanium magnetite on steel ball size and ratio distribution［J］.Modern Mining，35（11）：160-164. |
| null | Corin K C， Song Z G， Wiese J G，et al，2018.Effect of using different grinding media on the flotation of a base metal sulphide ore［J］.Minerals Engineering，126：24-27. |
| null | Cui Lifeng， Tian Shuguo，2022.Effective technology of recovering copper and silver from tungsten-tin tailings［J］. Fujian Metallurgy，51（3）：1-4. |
| null | Duan Xixiang，1997.Research on the Correction of the Theoretical Formula of Sphere Radius［J］. Science China E Series：Technical Science，（6）：510-515. |
| null | Gao Suoping，2021. Discussion on metallogenic characteristics of copper deposits and prospecting potential in periphery［J］. China Metal Bulletin，（9）：44-45. |
| null | Gao Yuhe，2021.Research and application of steel ball ratio optimization of a molybdenum mine ball mill in Henan［J］.Modern Mining，37（10）：258-260. |
| null | Li K Q， Chen J， Peng J H，et al，2020. Pilot-scale study on enhanced carbothermal reduction of low-grade pyrolusite using microwave heating［J］. Powder Technology，360：846-854. |
| null | Pei Yingjie， Xiao Qingfei， Zhang Qian，et al，2021.Optimizing yield comparison of an iron ore fine grinding intermediate grain size by orthogonal test method and response surface method［J］. Bulletin of Silicate，40（4）：1304-1311. |
| null | Ruan Y Y， He D S， Chi R，2019. Review on beneficiation techniques and reagents used for phosphate ores［J］. Minerals，9（4）：253. |
| null | Wang Chao， Rui Kai， Bi Kangying，2019.Research on the optimization of the steel ball ratio of the mill based on the magnetic lining plate［J］. Modern Mining，35（11）：181-182. |
| null | Wang Jing，2011.Theoretical Analysis and Practical Research on the Application of Cast Iron Segments as Rough Grinding Medium in Rough Grinders［D］.Kunming：Kunming University of Science and Technology. |
| null | Xiao Qingfei， Wang Guoqiang， Yang Fang，et al，2017.A study on improving the efficiency and granule uniformity of MQG2736 mill［J］. Journal of Kunming University of Science and Technology （Natural Science Edition），42（5）：28-32. |
| null | Zhang Qian， Xiao Qingfei， Yang Sen，et al，2020.Experimental research on quality optimization of ball mills in Kalatonk copper-nickel ore［J］. Comprehensive Utilization of Minerals，（4）：100-105. |
| null | Zhang X L， Han Y X， Gao P，et al，2020. Effects of grinding media on grinding products and flotation performance of chalcopyrite［J］. Minerals Engineering，145：106070. |
| null | Zheng Runhao， Fang Jianjun， Zhang Ling，et al，2020. Study on flotation kinetics of chrysocollain in ammonium-amine salt enhanced sulfuration system［J］. Nonferrous Metals Engineering，10（11）：85-92. |
| null | Zhou B， Wu C B， Shi G M，et al，2016.Development and application of calculation software for steel ball size and ratio in grinding process［J］. Chemical Minerals and Processing，45（1）：23-26. |
| null | Zhou Wentao， Han Yuexin， Li Yanjun，et al，2019.Grinding technical efficiency prediction model based on Matlab and particle swarm optimization［J］. Journal of Northeastern University（Natural Science Edition），（4）：548-551，556. |
| null | 蔡有兴，杨倩，1995.非金属矿选矿加工现状及发展趋势［J］.湖南有色金属，（1）：24-28. |
| null | 常富强，牛南南，梁献振，2022.洛钼选厂二段球磨机钢球配比优化研究［J］. 现代矿业，38（3）：125-128，164. |
| null | 陈城，林明，蒋颖，2019.钢球级配对钒钛磁铁矿磨矿产品粒度分布的影响［J］.现代矿业，35（11）：160-164. |
| null | 崔立凤，田树国，2022.从钨锡尾矿中回收铜银的有效工艺［J］.福建冶金，51（3）：1-4. |
| null | 段希祥，1997.球径半理论公式的修正研究［J］.中国科学E辑：技术科学，（6）：510-515. |
| null | 高锁平，2021.铜矿成矿特征及外围找矿潜力探讨［J］.中国金属通报，（9）：44-45. |
| null | 高玉和，2021.河南某钼矿球磨机钢球配比优化研究及应用［J］.现代矿业，37（10）：258-260. |
| null | 裴英杰，肖庆飞，张谦，等，2021.正交试验法及响应曲面法优化某铁矿细磨中间粒级产率的对比试验［J］.硅酸盐通报，40（4）：1304-1311. |
| null | 王超，芮凯，毕康颖，2019.基于磁性衬板的磨机钢球配比优化研究［J］.现代矿业，35（11）：181-182. |
| null | 王晶，2011.粗磨机应用铸铁段作为粗磨介质的理论分析及实践研究［D］.昆明：昆明理工大学. |
| null | 肖庆飞，王国强，杨芳，等，2017.提高MQG2736磨机台效及产品粒度均匀性的研究［J］.昆明理工大学学报（自然科学版），42（5）：28-32. |
| null | 张谦，肖庆飞，杨森，等，2020.喀拉通克铜镍矿球磨机磨矿作业质量优化试验研究［J］.矿产综合利用，（4）：100-105. |
| null | 张霜玉，吕馥言，夏正猛，等，2014.激光粒度法与筛分法测量洗煤泥粒度分布对比［J］.中国粉体技术，20（2）：43-46. |
| null | 郑润浩，方建军，张铃，等，2020.铵—胺盐强化硫化体系中硅孔雀石浮选动力学研究［J］.有色金属工程，10（11）：85-92. |
| null | 周文涛，韩跃新，李艳军，等，2019.基于Matlab和粒子群算法的磨矿技术效率预测模型［J］. 东北大学学报（自然科学版），（4）：548-551，556. |
/
| 〈 |
|
〉 |