氢气含量对含铁炉料还原及软熔性能的影响  

Effect of hydrogen content on reduction and softening-melting properties of iron bearing charges

作　　者：杜诚波 刘征建[1] 张建良[1] 王耀祖[1] 牛乐乐 亢庆锋 DU Cheng-bo;LIU Zheng-jian;NIU Le-le;ZHANG Jian-liang;WANG Yao-zu;KANG Qing-feng(School o{Metallurgical and Ecological Engineering,University of Science and Technology Beijing, Beijing 100083,China;HansteeI Company,HBIS Group,Handan 056015,Hebei,China)

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]河钢集团邯钢公司,河北邯郸056015

出　　处：《中国冶金》2018年第12期19-23,35,共6页China Metallurgy

基　　金：青年精英科学家计划资助项目(2017QNRC0001)

摘　　要：为了研究氢气含量对含铁炉料还原及软熔性能的影响,利用程序还原炉分析了不同氢气含量对含铁炉料还原性能的影响,利用高温熔滴炉模拟高炉喷吹含氢煤气,研究了氢气含量对含铁炉料软熔性能的影响。结果表明,当增大氢气含量后,炉料的软化温度会升高,滴落温度逐渐降低,同时也会改善炉料结构的透气性,使得渣铁更加容易分离;氢气含量会使含铁炉料中的FeO含量降低,弱化了脱碳反应,从而促进生铁中碳含量的增加。低温时氢气含量对还原几乎没有促进作用,高温则会促进氢气的还原性能;同时,氢气会促进含铁炉料中铁的析出。In order to study the effect of the H2content on the reduction and softening-melting properties of ironbearing charge,the effect of different H2content on the reduction performance of iron-bearing charge was analyzed by using a program reduction furnace,and the influence of the H2 content on the softening-melting performance of iron-bearing charge was simulated using a high-temperature drop furnace to simulate the injection of hydrogen-containing gas in the blast furnace.The results showed that when the H2 content was increased,the softening temperature of the charge would increase and the dripping temperature would gradually decrease.At the same time,the air permeability of the charge structure would be improved,making the slag iron easier to separate.The H2 content can reduce the FeO content in the iron charge,weakening the decarburization reaction and thus increasing the [C].content in the pig iron.At low temperature,the H2 concentration had almost no effect on the reduction,while high temperature promoted the reducing ability of H2.At the same time,H2 promoted the precipitation of Fe in iron-bearing charge.

关 键 词：高炉 氢气 软熔性能 还原 

分 类 号：TF532[冶金工程—钢铁冶金]