白云鄂博铁矿中氟对烧结矿组成与结构的影响  

Study on Influence of Fluorine on Mineral Composition and Microstructure of Sinter Produced by Baiyunebo Iron Ore Concentrates

作　　者：罗果萍[1] 张学锋[1] 王艺慈[1] 柏京波[1] 郝志忠[2] 邬虎林[3] 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]包头钢铁(集团)公司炼铁厂,内蒙古包头014010 [3]包头钢铁(集团)公司技术中心,内蒙古包头014010

出　　处：《过程工程学报》2010年第S1期150-153,共4页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:50664006)

摘　　要：采用微型烧结、矿相显微分析及扫描电镜能谱分析相结合的方法,研究了F含量对包钢高碱度烧结矿组成与结构的影响规律.研究结果表明,烧结矿中适宜的F含量为0.5%.当F含量低于0.5%时,F具有降低液相粘度、增加液相流动性、减小孔洞尺寸、均匀孔洞分布的作用,可使烧结矿呈现均匀的薄壁多孔结构.但较高的F含量则具有促进枪晶石、抑制铁酸钙和硅酸二钙生成、简化烧结矿组成的作用,易使烧结矿呈现薄壁大气孔结构.The influence of fluorine on mineral composition and microstructure of high basicity sinter produced by Baiyunebo iron ore concentrates was studied using mini-sintering test device,optical microscope(OM) and SEMEDAX.The results showed that the suitable content of fluorine in sinter was 0.5%.When the content of fluorine was lower than 0.5%,it could reduce viscosity and increase fluidity of liquid phase,make pore size small and pore distribution homogeneous,and the sinter microstructure exhibiting multi-cavities and thin framework.But higher content of fluorine in sinter could enhance cuspidine formation,inhibit calcium ferrite and dicalcium silicate formation,and reduce the phase constituents of sinter with the sinter microstructure exhibiting large cavities and thin framework.

关 键 词：F含量 烧结矿 矿物组成 矿物结构 白云鄂博铁矿 

分 类 号：TF046.4[冶金工程—冶金物理化学]