程潮铁精矿球团质量影响因素分析  

Factors affecting the quality of Chengchao pellets

作　　者：杨大兵[1] 徐佳鑫[1] 丁宝成[1] 李然[1] 王雄[1] 

机构地区：[1]武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室,湖北武汉430081

出　　处：《武汉科技大学学报》2014年第1期18-21,共4页Journal of Wuhan University of Science and Technology

摘　　要：以程潮铁精矿为原料进行造球试验,考察铁精矿粒度、膨润土种类及配比、造球水分和造球时间对球团质量的影响。结果表明,这几种因素对生球的落下强度、抗压强度和爆裂温度均有很大的影响;当程潮铁精矿中-0.074mm粒级含量为85.10%、膨润土A配比为1.5%、造球水分为8%、造球时间为12min时,能得到生球落下强度为9.8次/(0.5m)、抗压强度为20.5N/个、生球爆裂温度为467℃的优质球团矿。T he influence of several factors including size distribution of iron concentrate ,type and addi-tion of bentonite ,addition of pelletizing moisture and pelletizing time on the quality of Chengchao pel-lets was investigated by pelletizing experiments in the laboratory .It is found that all the four factors can impact greatly on the drop strength ,compressive strength and burst temperature of green balls , and when the iron concentrate contains 85 .10% -0 .074 mm fraction ,1 .5% A betonite ,8 .0% mois-ture and when the pelletizing time is 12min ,high quality pellets can be produced with the green balls having a drop strength of 9 .8 times/0 .5 m ,a compressive strength of 20 .5 N/p and a burst tempera-ture of 467 ℃ .

关 键 词：铁精矿 球团 粒度组成 膨润土配比 造球时间 生球强度 爆裂温度 

分 类 号：TF046[冶金工程—冶金物理化学]