进口粉矿粒度变化对其烧结性能的影响  

Influence of size changes of imported ore fines on sintering properties

作　　者：武轶[1] 李骞[2] 熊德怀[1] 游志雄[2] 

机构地区：[1]马钢技术中心,安徽马鞍山243000 [2]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《钢铁研究》2012年第2期1-3,11,共4页Research on Iron and Steel

摘　　要：近年来进口铁矿粉质量日趋劣化,马钢烧结所用A粉、B粉、F粉和H粉粗粒级+6.3mm部分增加趋势明显。烧结试验研究表明:进口粉矿中+6.3mm粒级增加后,烧结料层的原始透气性变好,利用系数和烧结速度均有所改善,烧结矿成品率、强度则在一定的粒级组成下有所改善;粒度继续变粗后,成品率和转鼓强度反而变差。采取适当降低混合料水分、保持或略增焦粉配比等措施,有利于烧结矿成品率和转鼓强度指标改善。The quality of imported ores is getting worse and worse in recent years.For the imported ore fines A,B,F and H,the fraction ＋6.3 mm are increasing significantly at Masteel.Test results show that when the fraction ＋6.3 mm were increased,green bed permeability was improved,sintering productivity and speed increased,sintering yield and trumbler strength were improved in a certain size region.Further increase in fraction ＋6.3 mm,however,both sintering yield and trumbler strength got worse.Some effective measures could regain the sintering yield and trumbler strength.They included a moderate decrease in sinter mix moisture and a maintained constant or slight increase in coke ratio level.

关 键 词：进口粉矿 粗粒级 烧结性能 

分 类 号：TF124.8[冶金工程—粉末冶金]