粉磨方式对钢渣微粉特性的影响  

Effect of grinding method on properties of steel slag powder

作　　者：段思宇 李溪 马卓慧 廖洪强 程芳琴(国家环境保护煤炭废弃物资源化高效利用技术重点实验室 DUAN Siyu;LI Xi;MA Zhuohui;LIAO Hongqiang;CHENG Fangqin(State Environment Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources,Institute of Resources and Environmental Engineering,Shanxi University,Taiyuan 030006,China;Shanxi Architectural Science Research Institute Co.,Ltd,Taiyuan 030001,China)

机构地区：[1]煤电污染控制及废弃物资源化利用山西省重点实验室,山西大学资源与环境工程研究所,太原030006 [2]山西省建筑科学研究院有限公司,太原030001

出　　处：《粉末冶金材料科学与工程》2020年第1期51-57,共7页Materials Science and Engineering of Powder Metallurgy

基　　金：国家重点研发计划资助项目(2017YFC0703104);山西省煤基重点科技攻关项目(MC2016-03)

摘　　要：采用机械粉磨法将钢渣磨成微粉并运用于建材生产是钢渣资源化再利用的一种有效途径。分别采用球磨机和超音速蒸汽粉碎机对钢渣进行机械粉磨,对比分析这2种粉磨方式下获取的钢渣微粉的粒度分布、化学组成、矿物组成和活性指数等特性,同时对这2种粉磨方式的粉磨效率和能耗进行计算。结果表明:与球磨法相比,采用超音速蒸汽粉碎机粉磨获得的钢渣微粉粒径更小(D50=2.06μm),粒度分布范围更窄,粒度更均匀。采用超音速蒸汽粉碎机获得的钢渣颗粒出现明显的化学组分偏析现象,粒度较小的钢渣颗粒中富集更多的Ca、Si元素,这有利于提高其胶凝活性。与球磨机相比,超音速蒸汽粉碎机的粉磨效率更高,能耗更低,更适合钢渣的粉磨。Making the steel slag into powder by the mechanical comminuting process and applying it to the building materials production is an effective way of the steel slag recycling.The steel slag was ground mechanically by a ball mill and a supersonic steam-jet crusher,respectively.The particle size distribution,chemical composition,mineral composition and the activity index of the steel slag powder obtained by the two kinds of grinding methods were compared and analyzed.In addition,the grinding efficiency and energy consumption of the above two grinding methods were also analyzed.The results show that,in comparison steel slag obtained by ball mill,the particle size(D50:2.06μm)of the steel slag obtained by the supersonic steam mill is smaller,and the particle size distribution range is narrower,and the particle is more uniform.Obvious chemical component segregation occurs in the steel slag obtained by the supersonic steam-jet crusher,and more Ca and Si elements are enriched in the steel slag with smaller size particles,which is more conducive to the appearance of its gelling activity.Compared with the ball mill,the supersonic steam mill has higher grinding efficiency and lower energy consumption,and it is more suitable for the steel slag grinding.

关 键 词：钢渣微粉 球磨机 超音速蒸汽粉碎机 粉磨效率 

分 类 号：X705[环境科学与工程—环境工程]