煤泥水连续分级装置研究进展综述  

An overview of the progress made in the research and development of the coal slurry continuous-type classifier

作　　者：朱宏政[1,2] 李甜 黄典强 邵善敏 徐文玉 李梦闪 杨璐映 王海楠 ZHU Hongzheng;LI Tian;HUANG Dianqiang;SHAO Shanmin;XU Wenyu;LI Mengshan;YANG Luying;WANG Hainan(School of Materials Science&Engineering,Anhui University of Science&Technology,Huainan 232001,China;Instituto de Metalurgia,Universidad autonoma de San Luis Potosi,San Luis Potosi 78210,Mexico)

机构地区：[1]安徽理工大学材料科学与工程学院,安徽淮南232001 [2]圣路易斯波托西自治大学冶金研究所,墨西哥圣路易斯波托西78210

出　　处：《选煤技术》2018年第5期32-37,42,共7页Coal Preparation Technology

基　　金：国家自然科学基金资助项目(51374015);安徽省高校自然科学基金资助项目(KJ2016A188);安徽理工大学研究生创新基金资助项目(2017CX2101)

摘　　要：为了将煤泥水预先连续分级,以根据其性质分别进行精细化处理,提出了一种基于水力分级原理的煤泥水连续分级装置。利用Fluent软件对设置正四边形和正六边形管束的煤泥水连续分级装置内的流场分布和速度分布进行了研究,并以此为依据对整流管束形状进行了优选。通过实验室煤泥水分级试验和Fluent模拟计算手段考查了该装置的分级效果,结果表明:模拟计算结果与实验室试验结果吻合度较高,从而验证了CFD手段在煤泥水分级过程研究中的应用可行性。研究还表明,微细粒级煤泥颗粒分级错配率较高,分级效果受外界影响较大,分级效率需进一步提高。A coal slime continuous classifier is developed according to hydraulic classification principle.The classifier is used for making pre-classification of coal slime in a continuous manner for making it possible to carry out fine processing of various size fractions according to their respective properties.Fluent software is used to simulate the flow and velocity distribution in the classifier with the flow-regulating pipe bundles arranged in square and orthohexagonal forms,for optimum selection of the shape of pipe bundles.Test on the efficiency of the classifier is conducted in laboratory and through simulation with Fluent software,and the results obtained in both cases are in good agreement,well demonstrating the applicability of computational fluid dynamics(CFD)in research of hydroclassification of coal slime.Experimental study shows that:the ultrafine coal tends to have a higher misplacement rate as the effect of its classification is affected by external factors;and the efficiency of classification of finer size fractions needs to be further enhanced.

关 键 词：煤泥水 连续分级装置 干扰沉降 计算流体力学 错配率 

分 类 号：TD941.5[矿业工程—选矿]