钒钛磁铁精矿分流制粒烧结中配碳量的影响  

Effect of Carbon Content in Vanadium Titanium Magnetite on Sintering of Separated Granulating

作　　者：吕庆[1] 杨松陶[1] 孙艳芹[2] 胡晓[1] 白瑞国[3] 陈树军[3] 

机构地区：[1]河北联合大学冶金与能源学院,河北唐山063009 [2]东北大学材料与冶金学院,辽宁沈阳110004 [3]河北钢铁股份有限公司承德分公司,河北承德067000

出　　处：《钢铁》2011年第11期21-25,共5页Iron and Steel

基　　金：河北省重大技术创新项目(09215139Z)

摘　　要：分流制粒烧结是一种新的烧结工艺,即将铁精矿分别制成高碱度物料和酸性球,再混入燃料、返矿等进行烧结的方法。试验结果表明,随着配碳量增加,铁酸钙含量降低,钙钛矿含量增加,赤铁矿含量减少,转鼓强度和还原粉化指数提高,还原性下降。过高的配碳量不利于烧结矿质量,配碳质量分数应控制在4.2%左右。Separated granulating sintering was a kind of new sintering process,which included making the concentrate ore into high R material and acidic ball separately,mixing with fuels and returned mine,and taking the compound sintering.The study results show： with the increase of carbon content,the content of calcium ferrite of sinter is decreased,the content of CaO·TiO2 of sinter is increased,the content of hematite of sinter is decreased,the TI and RDI of sinter is improved,the RI of sinter is deteriorated.In summary,high carbon content was not conducive to quality of sinter.It should be around 4.2%.

关 键 词：分流制粒 配碳量 钒钛磁铁矿 烧结矿 

分 类 号：TF124.5[冶金工程—粉末冶金]