红格某选铁尾矿磨矿动力学研究
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摘要
采用分批次磨矿试验,选取了-2mm粒级红格某选铁尾矿为原料,研究其在球磨机中的磨矿动力学行为,对多个窄粒级范围的磨矿产品粒度进行分析,采用MATLAB 2017软件初步建立了磨矿动力学方程,并对不同粒级磨矿速度进行了分析。研究结果表明,磨矿初期,粗粒级的磨矿速度最大,细粒级磨矿速度最小且变化幅度较小,随着时间的增加,在短时间内(1～12min),磨矿速度与参数k值呈正比例相关,在合理的介质制度下能快速磨碎粗颗粒且防止细颗粒过磨,研究此动力学过程,有助于指导尾矿选钛磨矿工艺最佳参数的选择。
The grinding kinetics of tailings in ball mill was studied,a series of batch grinding tests are carried out using-2 mm of iron tailings obtained from Hongge mining district,analysis of the size of distribution of grinding products in a range of narrow particle sizes are done and the function of grinding kinetics are built with the software MATLAB 2017.The results show in the initial stage of grinding,the coarse-grained grinding speed is the largest,the fine-grained grinding speed is the smallest and changed small.Under short time(1～12 min),the grinding speed is directly proportional to the parameter kvalue.Faster grinding speed of coarse particles and prevent fine particles from overgrinding were obtained under a reasonable media system.Studying this kinetic process will help guide the selection of grinding parameters in practice of recovery of titanium from iron tailings.
The grinding kinetics of tailings in ball mill was studied,a series of batch grinding tests are carried out using-2 mm of iron tailings obtained from Hongge mining district,analysis of the size of distribution of grinding products in a range of narrow particle sizes are done and the function of grinding kinetics are built with the software MATLAB 2017.The results show in the initial stage of grinding,the coarse-grained grinding speed is the largest,the fine-grained grinding speed is the smallest and changed small.Under short time(1～12 min),the grinding speed is directly proportional to the parameter kvalue.Faster grinding speed of coarse particles and prevent fine particles from overgrinding were obtained under a reasonable media system.Studying this kinetic process will help guide the selection of grinding parameters in practice of recovery of titanium from iron tailings.
引文
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[4]段希祥.碎矿与磨矿[M].2版.北京:冶金工业出版社,2006.
[5]段希祥.选择性磨矿及其应用[M].北京:冶金工业出版社,1991.
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[8]侯英,丁亚卓,印万忠,等.磨矿动力学参数对磨矿速度的影响[J].东北大学学报(自然科学版),2013,34(5):708-711.