沙钢3号高炉炉缸安全评估分析

为探究沙钢3号高炉炉缸侧壁温度升高原因,对沙钢3号高炉开炉以来的热电偶温度数据及热流强度变化趋势进行统计,并计算了炭砖的残余厚度。结合3号高炉的死铁层深度及冷却系统设计等参数,对炉缸侧壁温度升高的原因进行了解析。结果表明,沙钢3号高炉炭砖侵蚀薄弱区域处于铁口下方1~2 m,最薄位置处于西铁口,炭砖残余厚度约为517 mm。结合高炉炉缸设计发现,其炭砖侵蚀严重区域处于炉缸冷却壁薄弱位置,且与炉缸死料柱角部位置有关。研究相关结果可为国内大中型高炉设计提供相关指导。

Safety assessment and analysis of No.3 blast furnace hearth in Shasteel

In order to explore the reasons for the increase in the sidewall temperature of the No.3 blast furnace in Shasteel, the thermocouple temperature data and heat flow intensity change trend since blowing in the blast furnace were statistically analyzed, and the residual thickness of carbon bricks was calculated. Combined with the depth of the dead iron layer and design of the cooling system and other parameters of the No.3 blast furnace in Shasteel, the reasons for the increase in the temperature of the hearth side wall were analyzed. The results show that the weak area of carbon brick erosion of the No.3 blast furnace in Shasteel was between 1-2 m below the iron hole, and the thinnest position was at the west iron hole. The residual thickness of carbon brick was 517 mm. Combined with the design of the blast furnace hearth, it was found that the severely corroded area of carbon bricks was at the weak position of the hearth cooling wall and was related to the position of the corners of the hearth dead material column. The relevant results of the research can provide relevant guidance for the design of domestic large and medium-sized blast furnaces.