基于大型铁矿石熔滴检测设备的综合炉料性能  

Metallurgical property of mixed burden based on a large scale iron ore droplet testing equipment

作　　者：邸航 何志军[1] 阎丽娟 仇爽 湛文龙 张军红[1] DI Hang;HE Zhi-jun;YAN Li-juan;QIU Shuang;ZHAN Wen-long;ZHANG Jun-hong(School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China;Raw Material Management Center,Manufacturing Management Depart,Baoshan Iron and Steel Co.,Ltd.,Shanghai 201900,China)

机构地区：[1]辽宁科技大学材料与冶金学院,辽宁鞍山114051 [2]宝钢股份有限公司制造部原料管理中心,上海201900

出　　处：《钢铁》2018年第10期90-94,102,共6页Iron and Steel

基　　金：国家自然科学基金资助项目(51604148,51674139,51504131,51474124)

摘　　要：铁矿石的高温软熔滴落性能影响高炉内软熔带的形状及位置,进而影响高炉操作的稳定顺行。国内外传统的铁矿石熔滴检测设备存在坩埚尺寸小,试样量少等问题,导致无法客观地模拟高炉实际生产中复杂的炉料结构,同时试验结果波动较大,重现性差。使用大型铁矿石熔滴检测设备,测定了不同炉料结构下含铁炉料的高温软熔滴落特性,同时对比了传统小型熔滴检测设备,结果表明,随着块矿使用比例的增加,大型铁矿石熔滴检测设备测定的炉料的滴落温度td值随之减低,熔滴特征值S值呈相反规律;试验过程中料层出现的压差ΔP值达到峰值后呈现一定幅度的动态变化,初渣试样主要成分为黄长石类矿物及硅酸二钙（C2S）等,且料层的收缩率ΔH值明显增大,符合炉内铁矿石还原过程的生产实际。The shape and location of the cohesive zone in a BF were significantly affected by the softening dropping properties of the iron-bearing burden, which could further influence the BF stable smooth operation. The traditional iron ore droplet testing equipment at home and abroad couldn＇ t simulate the complicated BF burden in the actual production objectively due to the small crucible size used and few samples taken in the experiment, and the experiment results were fluctuant and poor reproducibility. The metallurgical properties of different BF burdens were detected based on a large scale iron ore droplet testing equipment with independent intellectual property rights. By comparing the large equipment testing results with the traditional testing results, it was found that the td value tested by the large equipment was decreased with the lump ore proportion increasing, while the S value showed the opposite tendency. The main components of the primary slag were melilite and dicalcium silicate （C2S）. Moreover, the AP value showed dynamic changes when it reached the peak value and the AH value increased distinctly, which were much closer to the BF practical production of the iron ore reduction process.

关 键 词：软熔滴落 高炉 块矿 炉料结构 初渣 

分 类 号：TF53[冶金工程—钢铁冶金]