Modelling of Coke Layer Collapse during Ore Charging in Ironmaking Blast Furnace by DEM
A technical issue in an ironmaking blast furnace operation is to realize the optimum layer thickness and the radial distribution of burden (ore and coke) to enhance its efficiency and productivity. When ore particles are charged onto the already-embedded coke layer, the coke layer-collapse phenomeno...
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2017-01-01
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Online Access: | https://doi.org/10.1051/epjconf/201714002018 |
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doaj-a489817e24e4480faee2bdc33778c9c62021-08-02T05:40:52ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011400201810.1051/epjconf/201714002018epjconf162403Modelling of Coke Layer Collapse during Ore Charging in Ironmaking Blast Furnace by DEMNarita Yoichi0Mio Hiroshi1Orimoto Takashi2Nomura Seiji3Process Research Laboratories, Nippon Steel and Sumitomo Metal Corporation. FuttsuProcess Research Laboratories, Nippon Steel and Sumitomo Metal Corporation. FuttsuProcess Research Laboratories, Nippon Steel and Sumitomo Metal Corporation. FuttsuProcess Research Laboratories, Nippon Steel and Sumitomo Metal Corporation. FuttsuA technical issue in an ironmaking blast furnace operation is to realize the optimum layer thickness and the radial distribution of burden (ore and coke) to enhance its efficiency and productivity. When ore particles are charged onto the already-embedded coke layer, the coke layer-collapse phenomenon occurs. The coke layer-collapse phenomenon has a significant effect on the distribution of ore and coke layer thickness in the radial direction. In this paper, the mechanical properties of coke packed bed under ore charging were investigated by the impact-loading test and the large-scale direct shear test. Experimental results show that the coke particle is broken by the impact force of ore charging, and the particle breakage leads to weaken of coke-layer strength. The expression of contact force for coke in Discrete Element Method (DEM) was modified based on the measured data, and it followed by the 1/3-scaled experiment on coke’s collapse phenomena. Comparing a simulation by modified model to the 1/3-scaled experiment, they agreed well in the burden distribution.https://doi.org/10.1051/epjconf/201714002018 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Narita Yoichi Mio Hiroshi Orimoto Takashi Nomura Seiji |
spellingShingle |
Narita Yoichi Mio Hiroshi Orimoto Takashi Nomura Seiji Modelling of Coke Layer Collapse during Ore Charging in Ironmaking Blast Furnace by DEM EPJ Web of Conferences |
author_facet |
Narita Yoichi Mio Hiroshi Orimoto Takashi Nomura Seiji |
author_sort |
Narita Yoichi |
title |
Modelling of Coke Layer Collapse during Ore Charging in Ironmaking Blast Furnace by DEM |
title_short |
Modelling of Coke Layer Collapse during Ore Charging in Ironmaking Blast Furnace by DEM |
title_full |
Modelling of Coke Layer Collapse during Ore Charging in Ironmaking Blast Furnace by DEM |
title_fullStr |
Modelling of Coke Layer Collapse during Ore Charging in Ironmaking Blast Furnace by DEM |
title_full_unstemmed |
Modelling of Coke Layer Collapse during Ore Charging in Ironmaking Blast Furnace by DEM |
title_sort |
modelling of coke layer collapse during ore charging in ironmaking blast furnace by dem |
publisher |
EDP Sciences |
series |
EPJ Web of Conferences |
issn |
2100-014X |
publishDate |
2017-01-01 |
description |
A technical issue in an ironmaking blast furnace operation is to realize the optimum layer thickness and the radial distribution of burden (ore and coke) to enhance its efficiency and productivity. When ore particles are charged onto the already-embedded coke layer, the coke layer-collapse phenomenon occurs. The coke layer-collapse phenomenon has a significant effect on the distribution of ore and coke layer thickness in the radial direction. In this paper, the mechanical properties of coke packed bed under ore charging were investigated by the impact-loading test and the large-scale direct shear test. Experimental results show that the coke particle is broken by the impact force of ore charging, and the particle breakage leads to weaken of coke-layer strength. The expression of contact force for coke in Discrete Element Method (DEM) was modified based on the measured data, and it followed by the 1/3-scaled experiment on coke’s collapse phenomena. Comparing a simulation by modified model to the 1/3-scaled experiment, they agreed well in the burden distribution. |
url |
https://doi.org/10.1051/epjconf/201714002018 |
work_keys_str_mv |
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