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| Simulate on agitating and mass transfer effect of 300 t dephosphorization slag-steel interface |
| HUANG Bo1，SUN Yan-hui2，BAI Xue-feng2，ZHAO Chang-liang3，LUO Lei3，TIAN Zhi-hong3 |
（1. School of Metallurgical and Ecological Engineering， Uuniversity of Science and Technology Beijing， Beijing 100083， China
2. Collaborative Innovation Center of Steel Technology， Uuniversity of Science and Technology Beijing， Beijing 100083， China
3. Steelmaking Department， Shougang Jingtang United Iron and Steel Co.， Ltd.，Tangshan 063200， Hebei， China） |
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Abstract In order to achieve efficient combined-blowing effect and improve the result of molten pool stiring， the influence of bottom blowing configuration on the agitating and mass transfer effects of slag-steel interface during the blowing process of BOF was studied by two indexes （mixing time and mass transfer rate）. The experimental results show that the optimal layout scheme is with eight inner holes， and at that moment， the mass transfer rate of slag-steel interface is the largest while the mixing time is the shortest. The mixing time of most bottom-blowing arrangements is inversely related to mass transfer rate. Overall， the more the number of holes in the inner ring are， the larger the mass transfer rate is at the slag-steel interface， while the shorter the mixing time is. For the 2-6 distribution， with uniform distribution of the bottom blowing element， the mixing and mass transfer effect of the arrangement is better， when the inner ring of the bottom blowing element is merged together with the outer ring.
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Received: 16 February 2017
Published: 29 September 2017
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| [1] |
LIANG Qiang, CAI Jun. Water modeling experimenton bottom lime injection base fluxes with oxygen into combined blown converter[J]. Iron and Steel, 2020, 55(5): 26-30. |
| [2] |
ZOU Tao1,ZHAN Dong-ping1,ZHANG Hui-shu2,LI Da-liang3,HAN Jian-lin3,LIU Xi-feng3. Mathematical and physical experimental study on mould nozzle optimization in slab continuous casting[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(4): 304-310. |
| [3] |
ZHOU Zhenyu, TANG Ping, ZHOU Zunchuan, HOU Zibing, WEN Guanghua. Optimization on nozzle parameters of 200 t combined blowing vanadium extraction converter[J]. Iron and Steel, 2019, 54(9): 50-56. |
| [4] |
Shi-Heng PENG. Effect of scrap on bath mixing for a BOF converter[J]. , 2019, 44(3): 0-0. |
| [5] |
ZHANG Bo，WU Wei，WU Wei，WANG Tian-ming，LUO Lin-gen，WANG Yu-han. Water model of freely swing lance injecting limestone powder to dephosphorization[J]. Iron and Steel, 2019, 54(1): 28-32. |
| [6] |
YU Peng-fei，LIU Xiao-liang，ZENG Jia-qing，LIN Teng-chang，YANG Li-bin. Water simulation on mixing of bottom blowing parts with non equilibrium gas supply in converter[J]. Iron and Steel, 2018, 53(6): 39-46. |
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2017, Vol. 52 
