变碱度条件下低硅烧结矿孔径分布的多重分形  

Multi-Fractional Research on Pore Distribution in the Sinter Ore With Different Basicity

作　　者：李远亮[1] 张庆军[1] 莫文玲[1] 姜丽梅[1] 刘金刚[1] 张玉柱[1] 

机构地区：[1]河北联合大学冶金与能源学院,河北唐山063009

出　　处：《钢铁》2013年第1期10-14,共5页Iron and Steel

基　　金：国家自然科学基金资助项目(50974052)

摘　　要：利用压汞仪测定了不同碱度的低硅烧结矿样品的孔径分布。采用多重分形理论计算其孔径分布的分形特征,并结合冶金性能分析探讨了三者之间的关系。研究结果表明,随着碱度的增加,低硅烧结矿的孔径分布经历了一个从不均匀到均匀的变化过程。碱度为2.0时,其谱宽Δα最小,多重分形结构较均匀,分形特征较好。此时孔径分布较均匀,气孔较大,有利于冶金性能的改善。测定样品冶金性能的结果表明,当碱度为2.0时,其综合性能最好。The pore distribution of low silica sinter ore samples with different basicity was measured by pressure mercury method,and the fractal characteristic of pore distribution was calculated with multifractal theory,then metallurgical properties were also obtained,finally,their relationship among them was discussed.The results show that the pore distribution has experienced a process from non-uniform to uniform with increasing alkalinity.When the basicity is 2.0,the spectral width Δα is minimum,multifractal structure is more uniform,fractal characteristics is better,the pore distribution is more uniform,and the pores are larger,which is helpful to improve metallurgical properties.The results also show that when the basicity is 2.0,its metallurgical properties are optimal.

关 键 词：烧结矿 碱度 孔径分布 多重分形 

分 类 号：TF046.4[冶金工程—冶金物理化学]