Safety assessment and analysis of No.3 blast furnace hearth in Shasteel
ZHOU Xia-zhi1, LEI Ming1, DU Ping1, ZHANG Jian2, ZHAN Jian-liang2, GENG Hao3
1. Ironmaking Office,Shasteel Group Co., Ltd., Zhangjiagang 215625,Jiangsu, China; 2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; 3. Jiangsu Jicui Metallurgical Technology Research Institute Co., Ltd., Zhangjiagang 215625, Jiangsu, China
Abstract：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.
Komiyama K M,Guo B Y,Zughbi H,et al.Improved CFD model to predict flow and temperature distributions in a blast furnace hearth[J].Metallurgical and Materials Transactions:B,2014,45 (5):1895.
2021, Vol. 31 
