Abstract：The position, size, porosity, renewal speed and other properties of the deadman under blast furnace tap hole play a decisive role in the flow mode of molten iron and slag in the hearth, which affecting the key issues such as hearth heat transfer, erosion of refractory materials, discharge speed of molten iron and slag. Through image processing technology, the shape, porosity, coke size and morphology distribution of the lower part of the deadman immersed in the hot metal of 1 880 m3 blast furnace in Laigang were studied. Through the analysis and calculation, the two-dimensional porosity of the lower part of the deadman immersed in hot metal is 56.73%. The average particle size of coke in this area is 15.3 mm, which reduces about 70%. From the analysis of the morphology, it is found that the coke in this area is closer to the ellipsoid shape, which shows that the consumption rate of coke in all directions is inconsistent after loading from the top of the furnace, and it has an obvious orientation. It can be concluded that in the process of slag and hot metal passing through the hearth, the degradation in horizontal and vertical direction is deep. This work is helpful for the information analysis of the "black box" of the blast furnace hearth and helps to further deepen the operators′ cognition for the working state of the deadman lower part and the hearth in the blast furnace.
梁栋, 刘元意, 王学斌, 张毅, 石红燕. 基于图像处理的高炉炉缸死铁层中焦粒信息分析[J]. 钢铁, 2020, 55(8): 169-174.
LIANG Dong, LIU Yuan-yi, WANG Xue-bin, ZHANG Yi, SHI Hong-yan. Analysis of coke particles in salamander of blast furnace hearth based on image processing technology[J]. Iron and Steel, 2020, 55(8): 169-174.
[1] Huang D, Marcelo Andrade1, John Ricketts, et al. Clevel and No.6 blast furnace hearth campaign extension[J]. Iron and Steel Technology, 2015,1(3):284. [2] Kalevi Raipala. Deadman and hearth phenomena in the blast furnace[J].Scandinavian Journal of metallurgy, 2000, 29(1):39. [3] 陈辉,吴胜利,余晓波. 高炉炉缸活跃性评价的新认识[J]. 钢铁, 2007, 42(10): 2.(CHEN Hui, WU Sheng-li,YU Xiao-bo. New index of evaluating activity of blast furnace hearth[J]. Iron and Steel, 2007, 42(10): 2.) [4] 陈培敦,孙其德,薛玉卿,等. 泰钢1号高炉取消中心加焦的研究与实践[J]. 中国冶金, 2019, 29(1): 48.(CHEN Pei-dun,SUN Qi-de,XUE Yu-qing,et al. Practice and research of non-central coke charging in Taisteel No.1 BF[J]. China Metallurgy, 2019, 29(1): 48.) [5] 朱进锋, 程树森, 赵宏博,等. 高炉炉缸死焦堆对渣滞留率的影响[J]. 北京科技大学学报, 2009,31 (2):224.(ZHU Jin-feng, CHENG Shu-seng, ZHAO Hong-bo, et al. Effect of deadman state on the residual rate of slag in a blast furnace hearth[J]. Journal of University of Science and Technology Beijin, 2009,31(2):224.) [6] 柏凌, 张建良, 郭豪, 等. 高炉内碱金属的富集循环[J]. 钢铁研究学报, 2008,20(9):5.(BAI Ling, ZHANG Jian-liang, GUO Hao, et.al. Circulation and enrichment of alkali metal in blast furnace[J]. Journal of Iron and Steel Research, 2008,20(9):5.) [7] 常治宇,张建良,宁晓钧,等. 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.(CHANG Zhi-yu,ZHANG Jian-liang,NING Xiao-jun,et al. Analysis of temperature rise and erosion state on sidewall of No.4 BF in Liusteel[J]. China Metallurgy, 2018, 28(6): 13.) [8] 佟溥昊,戴永燕,蒋益,等.鞍钢鲅鱼圈1号高炉停炉实践[J].冶金能源,2018,37(2):7. (TONG Pu-hao,DAI Yong-yan,JIANG Yi.Blowing out practice of No.1 blast furnace in Bayuquan of Ansteel[J], Energy for Metallurgical Industry,2018,37(2):7.) [9] Kouji Takatani,Takanobu Inada,Kouzo Takata. Mathematical model for transient erosion process of blast furnace hearth[J]. ISIJ International, 2001, 40(10):1139. [10] ZHOU Chen, TANG Guang-wu, WANG Ji-chao, et al. Comprehensive numerical modeling of the blast furnace ironmaking process[J]. JOM, 2016, 68: 1353. [11] 张立国, 范振夫, 刘宝奎, 等. 鞍钢新4号高炉优化生产实践[J]. 中国冶金, 2020, 30(5): 65. (ZHANG Li-guo, FAN Zhen-fu, LIU Bao-kui, et al. Optimization practice of Ansteel new No.4 blast furnace[J]. China Metallurgy, 2020, 30(5): 65.) [12] Torrkulla J, Saxén H. Model of the state of the blast furnace hearth [J]. ISIJ International, 2000, 40(5):438. [13] Panjkovic V, Truelove J S, Zulli P. Numerical modelling of iron flow and heat transfer in blast furnace hearth[J]. Ironmaking and Steelmaking, 2002,29(5):390. [14] 杨丹, 赵海滨,龙哲, 等. MATLAB 图像处理实例详解[M]. 北京:清华大学出版社,2013. (YANG dan, ZHAO Hai-bin, LONG Zhe, et al. Detailed Explanation of MATLAB Image Processing Example[M]. Beijing:Tsinghua University Press,2013.) [15] Mark S Nixon, Alberto S Aguado. Feature Extraction and Image Processing[M]. 北京:电子工业出版社,2010.(Mark S Nixon, Alberto S Aguado. Feature Extraction and Image Processing[M]. Beijin: Electronic Industry Press,2010.) [16] 张志涌,杨祖樱. MATLAB教程R2010a[M]. 北京:航空航天大学出版社,2010. (ZHANG Zhi-yong, YANG Zu-yin. Matlab Course R2010a[M]. Beijing: University of Aeronautics and Astronautics Press, 2010.) [17] Shinotake A, Ichida M, OotsukA H, et al. Floating sinking of deadman and liquid flow behavior in blast furnace hearth[J]. Nippon Steel Technical Report, 2006,94:115. [18] Kouichirou Shibata, Yoshio Kimura, Masakata Shimizu, et al. Dynamics of dead-man coke and hot metal flow in a blast furnace hearth[J]. ISIJ International, 1990, 30(3): 204. [19] 宋阳, 狄瞻霞, 刘颖, 等.高炉死料柱状态及其对铁水流动的影响[J]. 钢铁, 2019, 54(3): 23.(SONG Yang, DI Zhan-xia, LIU Yin, et.al. Deadman status and its influence on hot metal flow in blast furnace hearth[J]. Iron and Steel, 2019, 54(3): 23.) [20] 朱雯, 金焱, 祝俊俊, 等. 高炉非稳态出铁过程中死料柱状态对铁水流场影响的数值模拟[J]. 上海金属, 2018, 40(1):61.(ZHU Wen, JIN Yan, ZHU Jun-jun, et al. Numerical simulation of the influence of deadman state on flow field of hot metal of blast furnace hearth during transient tapping [J]. Shanghai Metals, 2018, 40(1):61.) [21] 李继昌. 酒钢1号高炉炉缸环状死料柱的形成[J]. 炼铁, 2010,29(1):34.(LI Ji-chang. Formation of circular pillaring in No.1 blast furnace hearth of Jiuquan Iron and Steel Co.,Ltd.[J]. Ironmaking, 2010,29(1):34.) [22] NIU Qun, CHENG Shu-sen, XU Wen-xuan, et al. Analysis of the coke particle size distribution and porosity of deadman based on blast furnace hearth dissection[J]. ISIJ International, 2019, 59(11): 1997. [23] ZHANG Lei, ZHANG Jian-liang, JIAO Ke-xin, et al. Observation of deadman samples in a dissected blast furnace hearth[J]. ISIJ International, 2019, 59(11): 1991. [24] Maarten Geerdes, Renard Chaigneau, Van Kuruno, et al. Morden Blast Furnace Ironmaking [M]. Beijing: Metallurgical Industry Press, 2016.)
2020, Vol. 55 
