|
|
|
| New Index of Evaluating Activity of Blast Furnace Hearth |
| CHEN Hui, WU Shengli,YU Xiaobo |
| School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing， Beijing 100083, China |
|
|
|
|
Abstract he working status of hearth has important effects upon the operation of blast furnace. Two main control factors of activity of the hearth are inner packed structure of coke and fluidity of slag and hot metal. The structure of packed coke determines the number and distribution of the channels for permeating liquid in high temperature zone, and fluidity of slag and hot metal is mainly influenced by their own physicochemical properties and temperature. The flowing resistance of hot metal and slag to large extent affects the hot metal and slag flowrate flowing in and from the hearth. The flowing resistance coefficient of slag and hot metal decreases, with the increase of oxygen enrichment rate.On basis of flowing resistance coefficient and production data, the activity index of hearth is presented which can better evaluate and judge the hearth working states.
|
|
Received: 01 January 1900
|
|
|
|
| [1] |
WANG Kun1,LIU Xiao-jie1,LIU Er-hao2,LI Hong-yang1,LIU Song1,LV Qing1. Core temperature prediction model based on AdaBoost algorithm[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(5): 363-369. |
| [2] |
WEN Xu1,ZOU Zhong-ping2,JIANG Hua3,WANG Wei4,ZHENG Shao-bo1,YU Zhong-da1. Composition analysis and thermal conductivity measurement of iron skull in blast furnace hearth[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2019, 31(9): 779-786. |
| [3] |
WEN Xu, JIANG Hua, CAO Jin, WANG Wei, XU Run-sheng, YU Zhong-da. Measurement of thermal conductivity for iron skull of blastfurnace hearth and modification of heat transfer model[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2019, 31(4): 347-353. |
| [4] |
SONG Yang， DI Zhan-xia， LIU Ying， LONG Hong-ming， WANG Ping. Deadman status and its influence on hot metal flow in blast furnace hearth[J]. Iron and Steel, 2019, 54(3): 23-28,34. |
| [5] |
WEN Xu1,ZOU Zhong-ping2,JIANG Hua3,WANG Wei4,ZHENG Shao-bo1,YU Zhong-da1. Carburization mechanism of molten ironslag passing through coke bed[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2019, 31(10): 867-874. |
| [6] |
WEI Guo,MENG Chao,LI Zi- liang,SHEN Feng- man,DU He- gui. Numerical simulation of influences of titanium- bearing wire injection position on blast furnace hearth protection[J]. Chinese Journal of Iron and Steel, 2016, 28(3): 13-18. |
|
|
|
|
2007, Vol. 42 