微粉煤的摩擦电选脱灰试验研究  

Research on Tribo-electrostatic Delime Test of Fine Coal

作　　者：梅雄[1,2] 章新喜[1,2] 陈锋[1,2] 张厦[1,2] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221008 [2]煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221008

出　　处：《煤炭技术》2012年第1期140-142,共3页Coal Technology

基　　金：国家自然科学基金委员会创新研究群体科学基金(50921002)

摘　　要：应用摩擦电选技术对原煤灰分高达36.48%的白庙矿的煤进行了摩擦电选试验研究,取得了85%的灰分脱除百分率。在此次试验过程中,对风量、电压等主要影响电选效果的因素进行了探讨,得出了最佳条件。此外,此次试验还对粉煤分选粒度下限进行了探讨,得出对于-500目的煤样也能进行有效分选。为了达到高炉喷吹用煤的要求,进行了二段电选深度脱灰试验,使其灰分降到了7.24%。Tribo-electrostatic deliming method was applied to reduce the ash content of Baimiao Coal Mine and has obtained a good de-ashing result,85 percentage.In this experiment,blowing rate,voltage,major factors impact on the separation results have been tested and the optimal parameters have been got.Moreover,the separation low limit of separation size have been studied too.The result shown that under 500 mesh fine-coal also can be effectively separated.In order to meet the requirements of blast furnace injection coal,two stage processes was carried out,and decreased the ash content of this coal to 7.24%.

关 键 词：微粉煤 摩擦电选 灰分脱除百分率 干法分选 

分 类 号：TD92[矿业工程—选矿]