通过烧结杯试验制备了不同碱度和不同MgO含量2个系列的低硅烧结矿样品.利用XRD(X射线衍射仪)和TEM(透射电子显微镜)分别对样品的结构和表面形貌进行了表征.随碱度和MgO含量提高,CaFe2O4和Fe3O4含量发生了显著变化;孔隙结构由柱状变为溶蚀网状,更加复杂.利用单重分形软件和表面分形模型分别计算了2个系列样品的表面分形维数(Dss和Dsv).随着碱度和MgO含量提高,表面分形维数增加;利用表面分形模型计算的Dsv和Rsv(线性相关系数)大于单重分形软件计算的Dss和Rss,表面分形模型可以反映更多细节,且相关性更好.因此可以用表面分形模型替代传统的单重分形软件来表征孔隙结构的复杂性,解决了孔隙表面形貌拍摄的困难和选择区域的局限性.
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