用扫描电子显微镜、X射线衍射仪、光学显微镜和图象分析系统等分析方法研究了 2 5 0 0 m3高炉的入炉焦和风口焦的形貌和微观结构。结果表明 :焦炭在高炉内气孔增多增大且形状更加不规则 ,气孔壁光学组织变化不大 ,气孔壁材料的有序化度明显增大。 The morphology and microstructure of coke and tuyere of 2500 m3 blast furnace were studied by using scanning electron microscopy, X-ray diffraction, optical microscope and image analysis system. The results show that the coke increases more and its shape is more irregular in the blast furnace, the optical structure of the stomatal wall does not change much, and the ordering degree of the stomatal wall is obviously increased.