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以通才2号高炉炉缸为研究对象,研究炉缸侧壁黏结物中主要物质元素的成分、分布、沉积行为,以及矿物质组分的转化机理,利用化学分析、扫描电镜、X射线衍射仪对样品的元素组成、微观形貌和矿物组成进行分析。结果表明,高炉炉缸侧壁形成的黏结物主要为双层结构,分别是石墨碳层和渣层,且石墨碳层中含有一定量的渣相。黏结物中渣相的主要来源为焦炭灰分而非高炉炉渣。黏结物的化学成分和物相组成,随高炉炉缸深度的增加并未发生明显的变化。分析了焦炭灰分的演变规律和黏结物中石墨碳的来源,从而为高炉正常生产过程中炉缸黏滞层的形成提供有益的参考和指导,实现高炉炉缸长寿。
Taking Tong No.2 blast furnace hearth as the research object, the composition, distribution, deposition behavior and the transformation mechanism of the main components of the cementitious material in the side wall of the hearth were studied. The chemical composition, scanning electron microscopy, X-ray diffraction The elemental composition, microstructure and mineral composition of the samples were analyzed. The results show that the bond formed by the side wall of the blast furnace hearth is mainly double-layer structure, which are graphite carbon layer and slag layer, and the graphite carbon layer contains a certain amount of slag phase. The main source of slag phase in the cohesive is coke ash rather than blast furnace slag. The chemical composition and phase composition of the cement did not change significantly with the increase of blast furnace hearth depth. The evolution of coke ash and the source of graphitic carbon in cement were analyzed, which provided a useful reference and guidance for the formation of viscous layer in hearth during the normal production of blast furnace, and realized the long life of blast furnace hearth.