Startseite The influence of central coke charging mode on the burden surface shape and distribution of a blast furnace
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The influence of central coke charging mode on the burden surface shape and distribution of a blast furnace

  • Zhanxia Di ORCID logo , Mingrong Huang , Xiaobin Zhou ORCID logo EMAIL logo , Junhan Liu , Junjie Sun , Ping Wang und Hongtao Wang
Veröffentlicht/Copyright: 3. August 2022
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Abstract

The burden surface shape and distribution in the shaft directly affect the gas distribution, heat transfer and chemical reactions inside the blast furnace. The current study developed a three-dimensional model of bell-less top charging to investigate the influence of the “central coke charging/sub-central coke charging” (CCC/SCCC) mode on the burden surface shape, burden distribution, and mass percentage of ore-to-coke (O/C). The results showed that the burden height of the region between the middle and edge is low by applying the CCC mode, while there is a heap valley in the center and a heap top in the middle region when the SCCC mode was adopted. In radial direction, the mass percentage of bigger size coke in the middle region is largest for the CCC mode, while the largest of the mass percentage was obtained in the center region by applying the SCCC mode. In longitudinal direction, the mass percentages of bigger coke and ore at the top region are largest for both modes. Besides, the mass percentage of O/C increased and then decreased to zero at the center for both modes. And the maximum of the mass percentage of O/C were 7.63 and 7.38, respectively.


Corresponding author: Xiaobin Zhou, School of Metallurgy Engineering, Anhui University of Technology, Ma’anshan, Anhui 243032, China, E-mail:

Award Identifier / Grant number: 52004001

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: The authors would like to thank the National Natural Science Foundation of China (Grant Number: 52004001).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2022-03-29
Accepted: 2022-07-08
Published Online: 2022-08-03

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