磁化对弱粘煤浮选过程的影响  

Effect of magnetization on process of flotation of weakly-coking coal

作　　者：吴树明 WU Shuming(Tangshan Research Institute Co.,Ltd.,China Coal Technology ＆ Engineering Group,Tangshan 063012,China;Hebei Province Coal Preparation Engineering ＆ Technology Research Center,Tangshan 063012,China)

机构地区：[1]中煤科工集团唐山研究院有限公司,河北唐山063012 [2]河北省煤炭洗选工程技术研究中心,河北唐山063012

出　　处：《选煤技术》2018年第3期17-19,25,共4页Coal Preparation Technology

摘　　要：为了解决采用常规浮选工艺和浮选药剂时弱粘煤浮选效果较差的问题,对弱粘煤的结构特性和磁化技术在浮选中的应用情况进行详细分析,确定采用磁化技术提高弱粘煤可浮性的方案,并在此基础上进行了磁化浮选试验。试验结果表明:经磁化后,弱粘煤与水之间的接触角增加,煤粒的疏水性提高,精煤产率提高1.1个百分点。The flotation of weakly-coking coal with conventional flotation process and reagent is relatively poor in performance. To solve this problem,following a detailed analysis of the structural characteristics of such coal and the state-of-art of application of magnetization technology in flotation process,the scheme for enhancing the floatability of weakly-coking coal with the use of magnetized water is selected. Result of flotation using this method indicates that,under the effect of magnetization the contact angle between coal and water is increased,leading,as a result,to the improvement of hydrophobicity of weakly-coking coal and the rise of yield of clean coal by 1. 1 percentage point.

关 键 词：弱粘煤 浮选 磁化 接触角 机理分析 

分 类 号：TD943[矿业工程—选矿]