炉腹煤气中氢含量对铁矿石滴落过程的影响  

Effect of hydrogen content of bosh gas on iron ore dropping process

作　　者：闫超杰[1] 李福民[1] 郄亚娜 刘颂[1] 吕庆[1] 

机构地区：[1]华北理工大学教育部现代冶金技术重点实验室,河北唐山063009

出　　处：《钢铁研究学报》2017年第6期441-446,共6页Journal of Iron and Steel Research

基　　金：国家自然科学基金重点支持联合基金资助项目(U1360205);华北理工大学研究生创新项目(2015B01)

摘　　要：利用高温熔滴炉对喷吹富氢煤气后高炉炉料的熔滴性能进行实验研究,XRD检测技术对喷吹富氢煤气后炉料的还原情况进行分析,并利用相图原理分析了不同富氢量对滴落带的影响。结果表明:喷吹富氢煤气后,矿石在进入滴落带之前,铁的氧化物已经大量被还原,滴落温度升高,滴落区间变窄。初渣渣量减少使得高炉透气性改善,最大压差与总特性值逐渐变小。结合滴落物与坩埚内剩余物的物相检测,得出富氢煤气对高炉熔滴性能的影响规律和最佳富氢量。The droplet properties of blast furnace burden after injection of hydrogen rich gas were studied by the droplet furnace. And the reduction of the burden in hydrogen rich gas was analyzed by XRD detection technology. The effects of different contents of hydrogen rich gas on dropping zone were analyzed by phase diagram. The results show that after the injection of hydrogen rich gas, the iron oxides has been largely reduced before entering the dropping zone, and the dripping temperature increases, and the dripping range becomes narrow. The decreasing amount of primary slag improves the air permeability of the blast furnace. The maximum pressure and the total characteristic value gradually decrease. The influence rule of hydrogen rich gas on the performance of the molten droplets and the optimum hydrogen rich content are obtained by detection of dripping and the residue in the crucible.

关 键 词：富氢量 炉料滴落性能 高炉初渣 

分 类 号：TF538.6[冶金工程—钢铁冶金]