Metallurgy, Vol. 62 No. 1, 2023.
Original scientific paper
Research on relationship between charging principle and hearth activity of blast furnace (BF)
B. Dai
; Anhui Engineering Laboratory for Intelligent Applications and Security of Industrial Internet, Anhui University of Technology, Maanshan, Anhui, China ; Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Anhui University of Technology, Ministry of Education, Maanshan, Anhui, China
M. Yuan
; Anhui Engineering Laboratory for Intelligent Applications and Security of Industrial Internet, Anhui University of Technology, Maanshan, Anhui, China ; Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Anhui University of Technology, Ministry of Education, Maanshan, Anhui, China
N. Zhang
; Ironmaking Department of Bayuquan Iron and Steel Subsidiary of Angang Steel Co.,Ltd., China
Y. Ma
; Anhui Engineering Laboratory for Intelligent Applications and Security of Industrial Internet, Anhui University of Technology, Maanshan, Anhui, China ; Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Anhui University of Technology, Ministry of Education, Maanshan, Anhui, China
Abstract
The relationship between charging principle and hearth activity of blast furnace has been clarified in this research. The voidage and diameter of coke in deadman which are related to charging principle serve as two pivotal factors for hearth activity. Discrete element method (DEM) analog simulation illustrates that both central and non-central coke charging result in the stratified structure of coke and ore in BF center. It is suggested to take non-central coke charging to promote central gas flow if the quality of raw materials meets the corresponding requirements. For the BF with poor raw materials, it is reasonable to employ central coke charging to keep the long-term stability of the production.
Keywords
blast furnace; charging principle; coke; ore; statistical results
Hrčak ID:
281374
URI
Publication date:
1.1.2023.
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