摘要
为了解决钢球磨矿存在的高耗能和过粉碎严重等问题。本文以细粒磁铁矿为研究对象,通过纯矿物磨矿实验考察了陶瓷球和钢球对磨矿性能的影响,采用响应曲面法分析磨矿操作因素及其交互作用对磨矿细度(γ_(<0.074 mm))的显著性影响顺序。结果表明:当入磨磁铁矿粒度<0.15 mm时,陶瓷球的磨矿效果显著优于钢球。在较优磨矿对比条件下,陶瓷球磨矿效果全面优于钢球,其磨矿过程中比能耗下降35.82%,噪声降低21.85%,技术效率增加26.12%;磨矿产品中γ_(<0.074 mm)提高5.96%,γ_(<0.023 mm)下降32.49%。响应曲面法分析结果表明,磁铁矿磨矿细度γ_(<0.074 mm)的显著性影响顺序为:球径>充填率>磨矿浓度;球径与充填率的交互作用对磁铁矿磨矿细度的影响达到高度显著水平,而充填率与磨矿浓度的交互作用不显著。本研究结果可为陶瓷球在黑色金属矿中的细磨作业提供参考。
The use of steel balls in the process of ore milling can cause some serious problems,such as high energy consumption and over-grinding.In this paper,fine-grained magnetite was used as the research object.The effects of ceramic and steel balls on mineral grinding performance were investigated by pure mineral grinding experiments.The response surface method was used to analyze the influence order of grinding operation factors and their interaction on grinding fineness(γ_(<0.074 mm)).The results showed that the grinding effect of ceramic balls was significantly better than that of steel balls when the particle size of the in-ground magnetite was less than 0.15 mm.Under the optimal grinding comparison conditions,the grinding effect of ceramic balls was better than that of steel balls.The specific energy consumption in the grinding process was reduced by 35.82%,the noise was reduced by 21.85%,and the technical efficiency was increased by 26.12%.In grinding products,γ_(<0.074) mm increased by 5.96%,while γ_(<0.023 mm) decreased by 32.49%.The results of the response surface method showed that the influence order of magnetite grinding fineness γ_(<0.074 mm) was as follows:medium size>filling rate>grinding concentration.The interaction between the medium size and filling rate has a highly significant effect on the grinding fineness of magnetite,while the interaction between the filling rate and grinding concentration is not significant.The results can be valuable for the fine grinding of ceramic balls in black metal ore.
作者
徐今冬
余超
陈晓锋
吴彩斌
张忠祥
XU Jindong;YU Chao;CHEN Xiaofeng;WU Caibin;ZHANG Zhongxiang(School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Jingdezhen Betterwear New Material Co.,Ltd.,Jingdezhen 333000,Jiangxi,China)
出处
《有色金属科学与工程》
CAS
北大核心
2023年第4期561-568,共8页
Nonferrous Metals Science and Engineering
基金
国家自然科学基金资助项目(51764015)。
关键词
陶瓷球
钢球
磨矿性能
节能降耗
响应曲面
ceramic ball
steel ball
grinding performance
saving energy and reducing consumption
response surface
