本文对攀钢四一0厂0.8m～3试验高炉解剖后各部位焦炭显微构造的变化（例如块焦由表及里的气孔率变化,孔壁平均厚度及孔壁各显微构造含量的变化）进行了研究,并对焦炭孔壁各显微结构选译气化问题进行了讨沦。认为焦炭在炉腰下部受侵较严重,由炉腹开始有较多的渣铁侵入,在渣焦接触处产生渣焦反应,形成环带状TiC,使焦炭进一步受侵。 In this paper, the changes of coke microstructure in various parts of BF 0.8m ~ 3 pilot plant in Panzhihua Iron and Steel Co., Ltd. (for example, the change of porosity and coke porosity, the average thickness of pore wall and the microstructure content of pore wall Changes) were studied, and coke hole wall of the microscopic structure of the translation of gas were discussed. It is considered that the coke is more seriously affected by the lower part of the furnace waist, and more slag iron intrudes from the fryer belly, resulting in the slag-coke reaction at the slag-coke contact point, forming a ring-shaped TiC and further invading the coke.