不同粉磨工艺对粉煤灰颗粒群分布特征的影响  

Influence of different grinding technology on distributioncharacteristics of fly ash particle group

作　　者：邹红生 唐凯靖 杨飞 曾玻 陈思洁 陈海焱[1] ZOU Hongsheng;TANG Kaijing;YANG Fei;ZENG Bo;CHEN Sijie;CHEN Haiyan(School of Environment and Resource,Southwest University of Science and Technology,Mianyang 621010,China;Department of Materials Engineering,Mianyang Vocational and Technical College,Mianyang 621000,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]绵阳职业技术学院材料工程系,四川绵阳621000

出　　处：《中国粉体技术》2021年第2期47-53,共7页China Powder Science and Technology

基　　金：四川省教育厅自然科学基金项目,编号:18ZA0498;四川省应用基础研究基金项目,编号:2018JY0438。

摘　　要：以燃煤电厂粉煤灰为研究对象,利用球磨工艺和蒸汽动能磨粉碎工艺对粉煤灰进行粉碎,并对粉体颗粒的粒径分布、矿物组成、颗粒形貌、Zeta电位和28 d活性指数等性能进行对比研究。结果表明:蒸汽动能磨制备的超细粉煤灰颗粒尺寸分布均匀,且其活性指数明显高于球磨机制备的超细粉煤灰;粉煤灰的活性随着其粒径的减小而明显增大,掺入质量分数为30%、中位粒径D50为5.14μm的超细粉煤灰,其活性指数可达104.5%。Taking coal-fired power plant fly ash as the research object,the fly ash was pulverized by ball milling process and steam jet milling process,and a more comprehensive comparative study of the particle size distribution,mineral composition,particle morphology,Zeta potential and 28 d activity index of the powder particles was carried out.The results show that the particle size distribution of ultra-fine fly ash prepared by steam jet mill is uniform,and its activity index is significantly higher than that of ultra-fine fly ash prepared by ball mill.The activity of fly ash increases significantly with the decreasing of its particle size.In the condition of 30% of ultrafine fly ash and D50=5.14 μm,its activity index can reach 104.5%.

关 键 词：粉煤灰 球磨 蒸汽动能磨 活性指数 

分 类 号：TK09[动力工程及工程热物理]