煤泥分选技术现状分析及展望  

Status analysis and prospect of slime separation technologies

作　　者：符福存[1] 周伟[2] 闫钦运[1] 朱金波[2] 陈衍庆[1] 吴超[2] 

机构地区：[1]兖州煤业股份有限公司兴隆庄煤矿,山东兖州272100 [2]安徽理工大学材料科学与工程学院,安徽淮南232001

出　　处：《洁净煤技术》2015年第3期28-31,共4页Clean Coal Technology

基　　金：安徽省自然科学基金资助项目(1308085ME73)

摘　　要：分析了国内外粗煤泥、细煤泥分选技术特征,阐述了主要设备的工作原理和发展现状,提出各分选技术的最佳使用条件。粗煤泥分选设备主要有煤泥重介质旋流器、螺旋分选机、水介质旋流器组、干扰床分选机,其中煤泥重介质旋流器发展迅速,有效降低了重介选煤的分选下限。细煤泥分选技术核心设备是浮选机,浮选柱对细粒物料有更好的分选效果。煤泥分选工艺主要有煤泥一级浮选、精煤泥一段回收、浮选精煤精选、煤泥分级浮选流程。最后提出粗煤泥分选技术应优化原煤分选工艺,进行不同工艺组合,提高综合分选效率。细煤泥分选应改进浮选设备以适应更宽的入料粒度范围,结合浮选准备作业和浓缩压滤作业,优化浮选工艺,设计出一套指标先进、成本低的高效细煤泥分选工艺。The technologies characteristics of coarse and fine slime separation at home and abroad were analyzed. Meanwhile,the optimum operation condition of each technology was investigated. The working mechanism and status of main equipments were indicated. The dense medium hydro-cyclone,spiral separator,water medium cyclone group and teetered bed separator were widely used in coarse slime separation. The fast-developing dense medium hydro-cyclone effectively reduced lower limit of separation. The key separation instrument of fine slime separation was flotation machine,the flotation column had better separation effects for fine slime. The slime separation process included four parts which were primary flotation of slime,one stage recovery of fine clean coal,flotation concentrate preparation,grade flota-tion of slime. The raw coal separation technologies optimization and process combination could improve separation efficiency of coarse slime. Considering feed coal size,flotation setup and concentration pressure filtration process,the flotation equipments improvement and process optimization were more beneficial to fine slime separation.

关 键 词：细煤泥 粗煤泥 浮选机 煤浆预处理器 

分 类 号：TD94[矿业工程—选矿]