CFD-DEM study of heat transfer in the reduction shaft of Corex

Research output: Contribution to journalArticleResearchpeer-review

20 Citations (Scopus)

Abstract

Corex has a great potential to produce hot metal economically and environmentally friendly. Reduction shaft (RS) for the direct reduction of iron ore is one of the two major reactors in Corex. This work uses a two-dimensional slot model to investigate the thermal behavior of the gas-solid flow in the RS by a combined computational fluid dynamics and discrete element method approach.The general heat transfer characteristics are firstly examined. The complicated transient gas-solid and heat transfer phenomena are demonstrated in the RS process. Then, the effects of discharge rate and two common burden profiles are investigated qualitatively. The results show a linear relation between the steady state bed temperature and discharge rate, which could be helpful for the construction of a reliable scaled down discrete particle model of the RS. The difference between the temperature distributions for two burden profiles is illustrated, which indicates that the control of burden profile could be an effective method to improve energy efficiency. These findings should be useful for the control and optimization of the RS operation.
Original languageEnglish
Pages (from-to)626 - 635
Number of pages10
JournalSteel Research International
Volume86
Issue number6
DOIs
Publication statusPublished - 2015

Cite this

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title = "CFD-DEM study of heat transfer in the reduction shaft of Corex",
abstract = "Corex has a great potential to produce hot metal economically and environmentally friendly. Reduction shaft (RS) for the direct reduction of iron ore is one of the two major reactors in Corex. This work uses a two-dimensional slot model to investigate the thermal behavior of the gas-solid flow in the RS by a combined computational fluid dynamics and discrete element method approach.The general heat transfer characteristics are firstly examined. The complicated transient gas-solid and heat transfer phenomena are demonstrated in the RS process. Then, the effects of discharge rate and two common burden profiles are investigated qualitatively. The results show a linear relation between the steady state bed temperature and discharge rate, which could be helpful for the construction of a reliable scaled down discrete particle model of the RS. The difference between the temperature distributions for two burden profiles is illustrated, which indicates that the control of burden profile could be an effective method to improve energy efficiency. These findings should be useful for the control and optimization of the RS operation.",
author = "Qinfu Hou and Jian Li and Aibing Yu",
year = "2015",
doi = "10.1002/srin.201400367",
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pages = "626 -- 635",
journal = "Steel Research International",
issn = "1611-3683",
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CFD-DEM study of heat transfer in the reduction shaft of Corex. / Hou, Qinfu; Li, Jian; Yu, Aibing.

In: Steel Research International, Vol. 86, No. 6, 2015, p. 626 - 635.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - CFD-DEM study of heat transfer in the reduction shaft of Corex

AU - Hou, Qinfu

AU - Li, Jian

AU - Yu, Aibing

PY - 2015

Y1 - 2015

N2 - Corex has a great potential to produce hot metal economically and environmentally friendly. Reduction shaft (RS) for the direct reduction of iron ore is one of the two major reactors in Corex. This work uses a two-dimensional slot model to investigate the thermal behavior of the gas-solid flow in the RS by a combined computational fluid dynamics and discrete element method approach.The general heat transfer characteristics are firstly examined. The complicated transient gas-solid and heat transfer phenomena are demonstrated in the RS process. Then, the effects of discharge rate and two common burden profiles are investigated qualitatively. The results show a linear relation between the steady state bed temperature and discharge rate, which could be helpful for the construction of a reliable scaled down discrete particle model of the RS. The difference between the temperature distributions for two burden profiles is illustrated, which indicates that the control of burden profile could be an effective method to improve energy efficiency. These findings should be useful for the control and optimization of the RS operation.

AB - Corex has a great potential to produce hot metal economically and environmentally friendly. Reduction shaft (RS) for the direct reduction of iron ore is one of the two major reactors in Corex. This work uses a two-dimensional slot model to investigate the thermal behavior of the gas-solid flow in the RS by a combined computational fluid dynamics and discrete element method approach.The general heat transfer characteristics are firstly examined. The complicated transient gas-solid and heat transfer phenomena are demonstrated in the RS process. Then, the effects of discharge rate and two common burden profiles are investigated qualitatively. The results show a linear relation between the steady state bed temperature and discharge rate, which could be helpful for the construction of a reliable scaled down discrete particle model of the RS. The difference between the temperature distributions for two burden profiles is illustrated, which indicates that the control of burden profile could be an effective method to improve energy efficiency. These findings should be useful for the control and optimization of the RS operation.

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U2 - 10.1002/srin.201400367

DO - 10.1002/srin.201400367

M3 - Article

VL - 86

SP - 626

EP - 635

JO - Steel Research International

JF - Steel Research International

SN - 1611-3683

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ER -