钒钛磁铁精矿分流制粒烧结中碱度的影响  

Influence of Basicity on Separated Granulating Sintering of Vanadium Titanium Magnetite

作　　者：孙艳芹[1] 杨松陶[2] 吕庆[2] 李福民[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]河北联合大学冶金与能源学院,河北唐山063009

出　　处：《东北大学学报（自然科学版）》2011年第9期1269-1273,共5页Journal of Northeastern University(Natural Science)

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,再混入燃料和返矿进行烧结的方法.针对碱度进行了实验室研究,以确定新的工艺参数.结果表明:碱度较低时,烧结矿黏结相以硅酸二钙和玻璃质为主,烧结矿质量较好;随着碱度升高,钙钛矿含量增加,对烧结矿冶金性能破坏性很大.TiO2完全生成钙钛矿后,碱度达到2.02时,铁酸钙含量增加很多,烧结矿液相遮盖了球团矿,烧结矿产量提高,冶金性能得到改善.Separated granulating sintering is a kind of new sintering process,which makes separately the concentrate ore into high basicity materials and acidic balls,then mix with fuels and returned mine to sinter.Sintering test was made in laboratory to study the effect of basicity and to define the new processing parameter.The results showed that when the basicity is low,the binder phase is based on C2S with viteic and the quality of sinter is good.With the increase of basicity,the content of CaO·TiO2 increases,which has badly destructive effect.When TiO2 is fully created into CaO·TiO2 and the basicity is 2.02,the content of SCFA is high,the liquid phase of sinter covers the pellet,the quantity of sinter is better and its metallurgical properties are improved.

关 键 词：分流制粒 碱度 钒钛磁铁矿 烧结矿 球团矿 

分 类 号：TF046[冶金工程—冶金物理化学]