钒钛磁铁矿酸性球团与碱性料混烧的矿相结构研究  

Mineralogical Structure of Vanadium-titanium Sinter Produced by Acid Pellets and Alkaline Materials Mixed Sintering

作　　者：丁海超 李福民[1] 孙艳芹[1] 陈树军[2] 吕庆[1] 黄宏虎 

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

出　　处：《钢铁钒钛》2015年第3期67-72,共6页Iron Steel Vanadium Titanium

基　　金：国家自然科学基金重点支持联合项目(U1360205);河北省自然科学基金资助项目(E2013209339);唐山市科技计划项目(14130277a)

摘　　要：钒钛磁铁矿酸碱厚料层混合烧结是一种新的烧结工艺,即将钒钛铁精粉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,与承钢现场常规烧结工艺相比,酸性球团矿的加入使烧结料层的结构发生改变,透气性变好,烧结矿的成品率明显提高,烧结矿中铁酸钙、磁铁矿含量升高,赤铁矿、钙钛矿含量降低;烧结矿的强度提高,低温还原粉化等冶金性能改善。Vanadium-titanium sinter produced by acid pellets and alkaline materials mixed sintering of thick material layer is a new sintering process where high alkalinity and acidity ball are made from the upcoming vanadium-titanium iron concentrate powder and then mixed with fuel and returned ore for further sintering. The experimental results showed that,compared with conventional sintering process,addition of acidic pellets had changed sintered material layer structure which led to the better breathability,improved sinter yield and increasing contents of calcium ferrite and magnetite while reducing hematite and perovskite contents. As a result,the strength and RDI of sinter have been improved.

关 键 词：钒钛磁铁矿 超厚料层 混合烧结 碱性料 酸性球 

分 类 号：TF046.4[冶金工程—冶金物理化学]