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烧结矿的显微结构较为复杂,二维平面图形难以全面表现其矿相特点,为了更直观、准确地反映烧结矿的矿相组成,深入分析烧结矿的微观结构特征,采用序列切片-三维重建法对烧结矿的显微结构进行了三维分析。研究表明,高碱度烧结矿中,铁酸钙多以针状和柱状形态存在,且在烧结矿内部多呈连通状态;针状或柱状铁酸钙中间交织着柱状或粒状的硅酸盐以及少量的玻璃相,局部区域分布有一定量的磁铁矿,呈互联状,磁铁矿主要以粒状他形晶存在,多与铁酸钙呈交织熔蚀结构;烧结矿中气孔大小不一,分布不均匀,形态不规则,多以连通气孔存在,也有部分闭气孔孤立存在于烧结矿内部,体积相对较小。
The microstructure of sinter is complicated. It is difficult to fully reveal the characteristics of the ore in two-dimensional plan. In order to reflect the phase composition of sinter more intuitively and accurately, the microstructure characteristics of sinter are analyzed in depth. The sequence slice - three-dimensional reconstruction The method of three-dimensional analysis of the microstructure of sinter. The results show that in the high alkalinity sinter, calcium ferrite mainly exists in acicular and columnar forms and mostly in the interior of the sinter. The acicular or columnar calcium ferrite interpends columnar or granular silicate and A small amount of glassy phase, a certain amount of magnetite is distributed in the local area and is interconnected. The magnetite mainly exists in the shape of granular hemorphite and is mostly interwoven and melted with calcium ferrite; the size and distribution of the pores in the sinter are distributed Inhomogeneous, irregular shape, and more to connect the existence of pores, there are some closed pores exist in the sinter, the volume is relatively small.