（1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. Ironmaking Plant, Liuzhou Iron and Steel Co., Ltd., Liuzhou 545002, Guangxi, China）
Abstract：In order to further clarify the causes of the temperature increase of sidewall of the No.4 BF and the erosion state of the hearth, based on the investigations and analyses of No.4 blast furnace hearth structural design, the quality of raw material and production parameters, combined with the change rule of sidewall temperature and the calculation of residual thickness of the carbon bricks, the causes of the temperature rise and the erosion state of the sidewall in the hearth were analyzed. The results showed that the cooling capacity of the hearth of the No.4 blast furnace and the monitoring of the side wall temperature in the hearth still needed to be strengthened. Besides the erosion of the sidewall carbon bricks, the fluctuations in the quality of the original fuel and the increase of smelting intensity were also the important reasons for the temperature rise of the sidewall in the hearth. The most serious part of the hearth erosion was 1.9 m below the central line of the taphole, which presented the typical "elephant foot" erosion.
常治宇，张建良，宁晓钧，焦克新，莫朝兴，陈汝刚. 柳钢4号高炉侧壁温度升高与侵蚀状态分析[J]. 中国冶金, 2018, 28(6): 13-18.
CHANG Zhi- yu,ZHANG Jian- liang,NING Xiao- jun,JIAO Ke- xin,MO Chao- xing,CHEN Ru- gang. Analysis of temperature rise and erosion state on sidewall of No.4 BF in Liusteel[J]. China Metallurgy, 2018, 28(6): 13-18.
2018, Vol. 28 
