马钢竖炉球团提高赤铁矿配比的研究  

Experimental study on high proportion of hematite in pelletizing process at Masteel Pelletizing Plant

作　　者：夏征宇[1] 李光辉[2] 

机构地区：[1]马钢股份公司技术中心,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》2011年第3期9-11,15,共4页Research on Iron and Steel

摘　　要：通过对高比例配用赤铁矿造球实验、管炉焙烧实验、竖炉投笼试验等分析,提出改善球团矿质量的强化措施等。研究表明：在润磨水分5.0%、润磨时间6 min、造球水分7.5%左右、造球时间10-12min条件下,11种配矿方案的生球落下强度均可满足生产需要。竖炉投笼试验结果表明：投笼球团均无爆裂现象,配30%进口赤铁精矿（配比为10%FTC精矿加20%CVRD精矿和20%FTC精矿加10%CVRD精矿）的球团抗压强度优于配10%进口赤铁精矿（配比为10%FTC精矿）的球团抗压强度。This paper analyzes experiments of pelletizing granulation and tube furnace roasting and trial run test with high proportion of hematite in pelletizing process and presents measures to improve pellet quality.The green ball strength for 11 blending schemes can meet the requirements of pelletizing production in the following conditions： moisture content of damp milling around 5 %,damp milling time around 6 min,moisture content of pelletizing around 7.5 %,pelletizing time about 10~12 min.The trial run test results show that there is no pellet bursting and the compressive strength of pellet with a hematite proportion of 30 %（10 % FTC concentrates＋20 % CVRD concentrates or 20 % FTC concentrates＋10 % CVRD concentrates）is higher than that with 10 % imported concentrates（10 % FTC concentrates）.

关 键 词：赤铁矿 造球 管炉焙烧 强化措施 

分 类 号：TF046.6[冶金工程—冶金物理化学]