Particle scale simulation of softening-melting behaviour of multiple layers of particles in a blast furnace cohesive zone

W J Yang, Z Y Zhou, A B Yu, D Pinson

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The cohesive zone, where ore particles soften and melt into liquid, plays a significant role in determining the layer permeability and structure, hence the flow of gas and liquid in a blast furnace. In this paper, the softening and melting behaviour of particles, coupled with gas flow and heat transfer, is investigated by means of the combined approach of computational fluid dynamics (CFD) for gas phase and discrete element method (DEM) for solid phase. In connection with the previous experimental study, wax and glass particles are used to simulate ore and coke particles, respectively, and the particles are arranged in different alternative layers in a packed bed to simulate the furnace operation. The effects of different variables such as layer configurations and gas properties on the softening and melting of wax particles are examined. It is demonstrated that the layer thickness and position have an obvious effect on the layer deformation and permeability, and hence gas flow; improved gas flow can be achieved in multiple layer operations. The approach and findings should be useful to the establishment of a comprehensive picture about softening and melting behaviour of particles, and their effect on blast furnace operation.
Original languageEnglish
Pages (from-to)134 - 145
Number of pages12
JournalPowder Technology
Volume279
DOIs
Publication statusPublished - 2015

Cite this

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title = "Particle scale simulation of softening-melting behaviour of multiple layers of particles in a blast furnace cohesive zone",
abstract = "The cohesive zone, where ore particles soften and melt into liquid, plays a significant role in determining the layer permeability and structure, hence the flow of gas and liquid in a blast furnace. In this paper, the softening and melting behaviour of particles, coupled with gas flow and heat transfer, is investigated by means of the combined approach of computational fluid dynamics (CFD) for gas phase and discrete element method (DEM) for solid phase. In connection with the previous experimental study, wax and glass particles are used to simulate ore and coke particles, respectively, and the particles are arranged in different alternative layers in a packed bed to simulate the furnace operation. The effects of different variables such as layer configurations and gas properties on the softening and melting of wax particles are examined. It is demonstrated that the layer thickness and position have an obvious effect on the layer deformation and permeability, and hence gas flow; improved gas flow can be achieved in multiple layer operations. The approach and findings should be useful to the establishment of a comprehensive picture about softening and melting behaviour of particles, and their effect on blast furnace operation.",
author = "Yang, {W J} and Zhou, {Z Y} and Yu, {A B} and D Pinson",
year = "2015",
doi = "10.1016/j.powtec.2015.04.002",
language = "English",
volume = "279",
pages = "134 -- 145",
journal = "Powder Technology",
issn = "0032-5910",
publisher = "Elsevier",

}

Particle scale simulation of softening-melting behaviour of multiple layers of particles in a blast furnace cohesive zone. / Yang, W J; Zhou, Z Y; Yu, A B; Pinson, D.

In: Powder Technology, Vol. 279, 2015, p. 134 - 145.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Particle scale simulation of softening-melting behaviour of multiple layers of particles in a blast furnace cohesive zone

AU - Yang, W J

AU - Zhou, Z Y

AU - Yu, A B

AU - Pinson, D

PY - 2015

Y1 - 2015

N2 - The cohesive zone, where ore particles soften and melt into liquid, plays a significant role in determining the layer permeability and structure, hence the flow of gas and liquid in a blast furnace. In this paper, the softening and melting behaviour of particles, coupled with gas flow and heat transfer, is investigated by means of the combined approach of computational fluid dynamics (CFD) for gas phase and discrete element method (DEM) for solid phase. In connection with the previous experimental study, wax and glass particles are used to simulate ore and coke particles, respectively, and the particles are arranged in different alternative layers in a packed bed to simulate the furnace operation. The effects of different variables such as layer configurations and gas properties on the softening and melting of wax particles are examined. It is demonstrated that the layer thickness and position have an obvious effect on the layer deformation and permeability, and hence gas flow; improved gas flow can be achieved in multiple layer operations. The approach and findings should be useful to the establishment of a comprehensive picture about softening and melting behaviour of particles, and their effect on blast furnace operation.

AB - The cohesive zone, where ore particles soften and melt into liquid, plays a significant role in determining the layer permeability and structure, hence the flow of gas and liquid in a blast furnace. In this paper, the softening and melting behaviour of particles, coupled with gas flow and heat transfer, is investigated by means of the combined approach of computational fluid dynamics (CFD) for gas phase and discrete element method (DEM) for solid phase. In connection with the previous experimental study, wax and glass particles are used to simulate ore and coke particles, respectively, and the particles are arranged in different alternative layers in a packed bed to simulate the furnace operation. The effects of different variables such as layer configurations and gas properties on the softening and melting of wax particles are examined. It is demonstrated that the layer thickness and position have an obvious effect on the layer deformation and permeability, and hence gas flow; improved gas flow can be achieved in multiple layer operations. The approach and findings should be useful to the establishment of a comprehensive picture about softening and melting behaviour of particles, and their effect on blast furnace operation.

UR - http://goo.gl/MWdj6e

U2 - 10.1016/j.powtec.2015.04.002

DO - 10.1016/j.powtec.2015.04.002

M3 - Article

VL - 279

SP - 134

EP - 145

JO - Powder Technology

JF - Powder Technology

SN - 0032-5910

ER -