粘结剂对尘泥含碳球团干球强度的影响  

Effect of binders on strength of dust and sludge carbon-containing dry pellets

作　　者：孙波[1] 李家新[1] 龙红明[1] 王平[1] 高岗[1] 陈彬[1] 

机构地区：[1]安徽工业大学冶金工程学院,安徽马鞍山243002

出　　处：《烧结球团》2014年第2期32-36,共5页Sintering and Pelletizing

基　　金：国家自然科学基金资助项目(编号:51274003)

摘　　要：在检测分析各种原料物化特性的基础之上,研究了配加不同种类、配比的粘结剂对尘泥含碳球团生球以及干球强度的影响。结果表明,当消石灰配入量为2.0%时,生球的抗压强度和落下强度分别能达到16.40 N/个和6.2次/0.5 m,干球的抗压强度和落下强度分别能达到59.34 N/个和2.1次/0.5 m。参照某转底炉现场生产使用的原料配比,用成球性较好的转炉泥替代成球性较差的机头灰,同时用2.0%消石灰代替2.0%膨润土作粘结剂时,生球、干球的抗压强度和落下强度均得到提高。Based on the test and analysis of the physicochemical properties of a variety of raw materials, the effects of different types and ratio of binders on strength of dust and sludge carbon-containing green pellets and dry pellets were studied. The results show that,with the addition of 2. 0% slaked lime, the compressive strength and dropping strength of green balls are 16.40 N/pellet and 6. 2 times/0. 5 m respectively, and those of dry pellets are 59.54 N/pellet and ~. 1 times/0. 5 m respectively. By referring to the raw material proportion used in site field of a rotary hearth furnace, using converter sludge with good ballability to replace the sinter machine feed end dust with poor ballability,and at the same time using 2.0% slaked lime as a binder to replace 2. 0% bentonite will all improve the compressive strength and dropping strength of green balls and dry pellets.

关 键 词：冶金尘泥 含碳球团 粘结剂 落下强度 抗压强度 

分 类 号：TF046.6[冶金工程—冶金物理化学] TF55