Effects of burden layer porosity on the reduction reaction of a blast furnace Lump zone

Dengwei Zhang; Chunyung Lu; Kai Wang; Han Wei; Abdallah Ahmed Elsherbiny; Jie Ren; Yuandgong Xiong; Masood Ahmed; Henrik Saxén; Yaowei Yu

doi:10.1016/j.powtec.2024.120015

Effects of burden layer porosity on the reduction reaction of a blast furnace Lump zone

Dengwei Zhang
, Chunyung Lu
, Kai Wang
, Han Wei
, Abdallah Ahmed Elsherbiny
, Jie Ren
, Yuandgong Xiong
, Masood Ahmed
, Henrik Saxén
, Yaowei Yu^*

^*Corresponding author for this work

Laboratory of Process and Systems Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

4 Citations (Scopus)

Abstract

The ironmaking blast furnace (BF) is a counter-current chemical reactor. The porosity distribution of burden layers in BF plays an important role for the gas distribution and gas–solid two-phase interaction. In this research paper, to analyze how porosity distributions affect gas velocity, gas temperatures and reduction, the different porosity distributions were investigated using three distinct processes by numerical models. The results showed that the change of porosity along the radius direction had a more obvious effect than along the height direction. When the porosity is exponentially distributed, the gas velocity was allowed a great development, promoting the gas temperature and reduction. Besides, in the lower part (height = 1/3H), with increasing porosity, the gas velocity increases by 30% and reduction by 25%. In the middle part (height = 2/3H), the gas velocity is increased by 30%, the gas temperature is increased by 200 °C, and the reduction is increased by 20%.

Original language	English
Article number	120015
Number of pages	13
Journal	Powder Technology
Volume	444
DOIs	https://doi.org/10.1016/j.powtec.2024.120015
Publication status	Published - 1 Aug 2024
MoE publication type	A1 Journal article-refereed

Funding

This work was supported by China Scholarship Council [grant number 202106890046]; the National Natural Science Foundation of China [grant number 51974182]; Distinguished professor (Tracking Plan) of Oriental Scholars of Shanghai Universities [grant number GZ2020013]; National 111 Project (The Program of Introducing Talents of Discipline to University)[grant number D17002]; Independent Research Project of State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of advanced Ferrometallurgy, Shanghai University [grant number SKLASS 2022-Z01]; the Science and Technology Commission of Shanghai Municipality [grant number 19DZ2270200]; China Baowu Low Carbon Metallurgy Innovation Foudation [grant number BWLCF202112]; and Ironmaking Plant, Baosteel Branch, Baoshan Iron & Steel Co. Ltd.(Project for optimization of the slagging regime for large blast furnace with economic burden)[grant number Z22BSLT076]. This work was supported by China Scholarship Council [grant number 202106890046 ]; the National Natural Science Foundation of China [grant number 51974182 ]; Distinguished professor (Tracking Plan) of Oriental Scholars of Shanghai Universities [grant number GZ2020013 ]; National 111 Project (The Program of Introducing Talents of Discipline to University)[grant number D17002 ]; Independent Research Project of State Key Laboratory of Advanced Special Steel , Shanghai Key Laboratory of advanced Ferrometallurgy, Shanghai University [grant number SKLASS 2022-Z01 ]; the Science and Technology Commission of Shanghai Municipality [grant number 19DZ2270200 ]; China Baowu Low Carbon Metallurgy Innovation Foudation [grant number BWLCF202112 ]; and Ironmaking Plant, Baosteel Branch, Baoshan Iron & Steel Co., Ltd .(Project for optimization of the slagging regime for large blast furnace with economic burden)[grant number Z22BSLT076 ].

Keywords

Blast furnace
Porosity
Layered structure
Numerical simulation
Temperature
Reduction degree

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10.1016/j.powtec.2024.120015

Cite this

@article{88432a63460d4015be2c4911dcb615b5,

title = "Effects of burden layer porosity on the reduction reaction of a blast furnace Lump zone",

abstract = "The ironmaking blast furnace (BF) is a counter-current chemical reactor. The porosity distribution of burden layers in BF plays an important role for the gas distribution and gas–solid two-phase interaction. In this research paper, to analyze how porosity distributions affect gas velocity, gas temperatures and reduction, the different porosity distributions were investigated using three distinct processes by numerical models. The results showed that the change of porosity along the radius direction had a more obvious effect than along the height direction. When the porosity is exponentially distributed, the gas velocity was allowed a great development, promoting the gas temperature and reduction. Besides, in the lower part (height = 1/3H), with increasing porosity, the gas velocity increases by 30\% and reduction by 25\%. In the middle part (height = 2/3H), the gas velocity is increased by 30\%, the gas temperature is increased by 200 °C, and the reduction is increased by 20\%.",

keywords = "Blast furnace, Porosity, Layered structure, Numerical simulation, Temperature, Reduction degree",

author = "Dengwei Zhang and Chunyung Lu and Kai Wang and Han Wei and Elsherbiny, \{Abdallah Ahmed\} and Jie Ren and Yuandgong Xiong and Masood Ahmed and Henrik Sax{\'e}n and Yaowei Yu",

year = "2024",

month = aug,

day = "1",

doi = "10.1016/j.powtec.2024.120015",

language = "English",

volume = "444",

journal = "Powder Technology",

issn = "0032-5910",

publisher = "Elsevier",

}

TY - JOUR

T1 - Effects of burden layer porosity on the reduction reaction of a blast furnace Lump zone

AU - Zhang, Dengwei

AU - Lu, Chunyung

AU - Wang, Kai

AU - Wei, Han

AU - Elsherbiny , Abdallah Ahmed

AU - Ren, Jie

AU - Xiong, Yuandgong

AU - Ahmed, Masood

AU - Saxén, Henrik

AU - Yu, Yaowei

PY - 2024/8/1

Y1 - 2024/8/1

N2 - The ironmaking blast furnace (BF) is a counter-current chemical reactor. The porosity distribution of burden layers in BF plays an important role for the gas distribution and gas–solid two-phase interaction. In this research paper, to analyze how porosity distributions affect gas velocity, gas temperatures and reduction, the different porosity distributions were investigated using three distinct processes by numerical models. The results showed that the change of porosity along the radius direction had a more obvious effect than along the height direction. When the porosity is exponentially distributed, the gas velocity was allowed a great development, promoting the gas temperature and reduction. Besides, in the lower part (height = 1/3H), with increasing porosity, the gas velocity increases by 30% and reduction by 25%. In the middle part (height = 2/3H), the gas velocity is increased by 30%, the gas temperature is increased by 200 °C, and the reduction is increased by 20%.

AB - The ironmaking blast furnace (BF) is a counter-current chemical reactor. The porosity distribution of burden layers in BF plays an important role for the gas distribution and gas–solid two-phase interaction. In this research paper, to analyze how porosity distributions affect gas velocity, gas temperatures and reduction, the different porosity distributions were investigated using three distinct processes by numerical models. The results showed that the change of porosity along the radius direction had a more obvious effect than along the height direction. When the porosity is exponentially distributed, the gas velocity was allowed a great development, promoting the gas temperature and reduction. Besides, in the lower part (height = 1/3H), with increasing porosity, the gas velocity increases by 30% and reduction by 25%. In the middle part (height = 2/3H), the gas velocity is increased by 30%, the gas temperature is increased by 200 °C, and the reduction is increased by 20%.

KW - Blast furnace

KW - Porosity

KW - Layered structure

KW - Numerical simulation

KW - Temperature

KW - Reduction degree

U2 - 10.1016/j.powtec.2024.120015

DO - 10.1016/j.powtec.2024.120015

M3 - Article

SN - 0032-5910

VL - 444

JO - Powder Technology

JF - Powder Technology

M1 - 120015

ER -

Effects of burden layer porosity on the reduction reaction of a blast furnace Lump zone

Abstract

Funding

Keywords

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