Numerical analysis on physical limitation on material flows in blast furnace

Hiroshi Nogami; Shinya Kitamura; Jun Ichiro Yagi

Numerical analysis on physical limitation on material flows in blast furnace

Hiroshi Nogami, Shinya Kitamura, Jun Ichiro Yagi

Center for Mineral Processing and Metallurgy (CMPM)

Research output: Contribution to conference › Paper › peer-review

Abstract

Under high energy efficiency operation of blast furnace, it is required to ensure fluent material flow in the furnace because the permeability of the burden materials is known to decline with decrease in reducing agent rate (RAR). Another factor to deteriorate the permeability in the furnace is powder accumulation. In this study physical limitations to material flows, namely fluidization and flooding, are discussed based on the in-furnace distributions obtained by the kinetic-based mathematical simulations. The results shows the decrease in RAR shifts the material flow status toward the limitations through the variation of cohesive zone shape. The powder accumulation in the furnace has severer effect on physical limitations, thus it is preferable to avoid the powder accumulation in the lower part of blast furnace.

Original language	English
Pages	157-160
Number of pages	4
Publication status	Published - 2006 Dec 1
Event	4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006 - Osaka, Japan Duration: 2006 Nov 26 → 2006 Nov 30

Other

Other	4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006
Country/Territory	Japan
City	Osaka
Period	06/11/26 → 06/11/30

ASJC Scopus subject areas

Metals and Alloys

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

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title = "Numerical analysis on physical limitation on material flows in blast furnace",

abstract = "Under high energy efficiency operation of blast furnace, it is required to ensure fluent material flow in the furnace because the permeability of the burden materials is known to decline with decrease in reducing agent rate (RAR). Another factor to deteriorate the permeability in the furnace is powder accumulation. In this study physical limitations to material flows, namely fluidization and flooding, are discussed based on the in-furnace distributions obtained by the kinetic-based mathematical simulations. The results shows the decrease in RAR shifts the material flow status toward the limitations through the variation of cohesive zone shape. The powder accumulation in the furnace has severer effect on physical limitations, thus it is preferable to avoid the powder accumulation in the lower part of blast furnace.",

author = "Hiroshi Nogami and Shinya Kitamura and Yagi, {Jun Ichiro}",

year = "2006",

month = dec,

day = "1",

language = "English",

pages = "157--160",

note = "4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006 ; Conference date: 26-11-2006 Through 30-11-2006",

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TY - CONF

T1 - Numerical analysis on physical limitation on material flows in blast furnace

AU - Nogami, Hiroshi

AU - Kitamura, Shinya

AU - Yagi, Jun Ichiro

PY - 2006/12/1

Y1 - 2006/12/1

N2 - Under high energy efficiency operation of blast furnace, it is required to ensure fluent material flow in the furnace because the permeability of the burden materials is known to decline with decrease in reducing agent rate (RAR). Another factor to deteriorate the permeability in the furnace is powder accumulation. In this study physical limitations to material flows, namely fluidization and flooding, are discussed based on the in-furnace distributions obtained by the kinetic-based mathematical simulations. The results shows the decrease in RAR shifts the material flow status toward the limitations through the variation of cohesive zone shape. The powder accumulation in the furnace has severer effect on physical limitations, thus it is preferable to avoid the powder accumulation in the lower part of blast furnace.

AB - Under high energy efficiency operation of blast furnace, it is required to ensure fluent material flow in the furnace because the permeability of the burden materials is known to decline with decrease in reducing agent rate (RAR). Another factor to deteriorate the permeability in the furnace is powder accumulation. In this study physical limitations to material flows, namely fluidization and flooding, are discussed based on the in-furnace distributions obtained by the kinetic-based mathematical simulations. The results shows the decrease in RAR shifts the material flow status toward the limitations through the variation of cohesive zone shape. The powder accumulation in the furnace has severer effect on physical limitations, thus it is preferable to avoid the powder accumulation in the lower part of blast furnace.

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M3 - Paper

AN - SCOPUS:84890288839

SP - 157

EP - 160

T2 - 4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006

Y2 - 26 November 2006 through 30 November 2006

ER -

Numerical analysis on physical limitation on material flows in blast furnace

Abstract

Other

ASJC Scopus subject areas

UN SDGs

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