期刊
POWDER TECHNOLOGY
卷 408, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.powtec.2022.117784
关键词
Blast furnace; Central coke charging; Coke collapse; Discrete element model
资金
- National Key Research and Development Program of China [2021YFC2902400, 2021YFC20902404]
- China Baowu Low Carbon Metallurgy Innovation Foudation [BWLCF202115]
- National Natural Science Foundation of China [51804027, 51904023]
- Fundamental Research Funds for the Central Universities
- Youth Teacher International Exchange Growth Program [QNXM20210009, QNXM20210011]
In this study, a three-dimensional model considering different burden sizes was established using the discrete element method (DEM). The effects of central coke charging angle, central coke charging amount, and coke layer profile on the coke collapse behavior and the ore-to-coke ratio were investigated.
Central coke charging is an effective way to prevent coke collapse, which helps to improve the ore-to-coke ratio and further the gas utilization and CO2 emissions. Therefore, a three-dimensional model considering different burden sizes of a bell-less top blast furnace is established basing on the discrete element method (DEM). The model is then used to investigate the effects of central coke charging angle, central coke charging amount, and coke layer profile on the coke collapse behavior and the ore-to-coke ratio along radius. The results show that the central coke charging angle has little effect on the coke collapse amount and the ore-to-coke ratio within the studied range. If discharged coke stays more on the peripheral region or forms an platform, the coke collapse amount will be less and the ore-to-coke will be more reasonable, otherwise, there should be enough central charged coke.
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