一种自焙炭块的孔隙特征  

Porous Features of A Self baking Carbon Block

作　　者：薛向欣[1] 李正平[1] 段培宁 陈四红 周敏 

机构地区：[1]东北大学材料与冶金学院

出　　处：《东北大学学报（自然科学版）》1999年第3期294-297,共4页Journal of Northeastern University(Natural Science)

基　　金：冶金工业部重点项目

摘　　要：采用Ｘ射线衍射方法测定了具有不同石墨化率的自焙炭块的真密度ρｕ，并结合体积质量ρｂ估算了全气孔率ｑ和比孔体积Ｖ·同时采用ＥＰＭ方法观测了自焙炭块的气孔形态，并与美国ＵＣＡＲＮＭＡ系列炭块进行了比较，认为：国产自焙炭块的气孔形状及力学结构不尽合理；１４５０℃下铁液在该炭块孔隙中的渗透较明显，且随时间的延续，渗透深度增加·True specific density of self baking carbon block with different graphitization degree was detemined by X ray diffraction method. Total porosity and specific porous volume were calculated from the data of bulk density. The pore morphology of the self baking carbon block was observed by EPM comparing with America UCAR NMA series carbon block. It is found out that porous shape,distribution and micro structure of the tested carbon block are not ideal so that penetration of liquid iron in the block appears at 1450℃ and the depth of penetration increase with time.

关 键 词：自焙炭块 真密度 气孔形态 孔隙特征 高炉 

分 类 号：TF531[冶金工程—钢铁冶金]