Modelling of titanium compound formation in blast furnace hearth

Baoyu Guo, Paul Zulli, Daniel Maldonado, Aibing Yu, Yansong Shen

Research output: Contribution to conferencePaperOther

Abstract

In a blast furnace. Titanium from titania addition can react with carbon and nitrogen in molten pig iron to form titanium carbonitride, giving the so-called titanium-rich scaffold on the hearth surface, to protect the hearth from further erosion. The current paper uses a mathematical model based on computational fluid dynamics to simulate the liquid metal flow, heat transfer and formation of solid particles. The model considers the fluid/solid flow through a packed bed, conjugated heat transfer, species transport and thermodynamic of key chemical reactions. A region of high solid particle concentration is predicted at the hearth bottom surface. Regions of solid formation and dissolution can be identified which depend on the local temperature and chemical equilibrium. The model provides an insight into the fundamental mechanism of solid formation in the blast furnace hearth.

Original languageEnglish
Pages851-856
Number of pages6
Publication statusPublished - 1 Dec 2009
Externally publishedYes
Event5th International Congress on the Science and Technology of Ironmaking, ICSTI 2009 - Shanghai, China
Duration: 20 Oct 200922 Oct 2009

Conference

Conference5th International Congress on the Science and Technology of Ironmaking, ICSTI 2009
CountryChina
CityShanghai
Period20/10/0922/10/09

Keywords

  • Blast furnace hearth
  • CFD modelling
  • Titanium solidification

Cite this

Guo, B., Zulli, P., Maldonado, D., Yu, A., & Shen, Y. (2009). Modelling of titanium compound formation in blast furnace hearth. 851-856. Paper presented at 5th International Congress on the Science and Technology of Ironmaking, ICSTI 2009, Shanghai, China.
Guo, Baoyu ; Zulli, Paul ; Maldonado, Daniel ; Yu, Aibing ; Shen, Yansong. / Modelling of titanium compound formation in blast furnace hearth. Paper presented at 5th International Congress on the Science and Technology of Ironmaking, ICSTI 2009, Shanghai, China.6 p.
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Guo, B, Zulli, P, Maldonado, D, Yu, A & Shen, Y 2009, 'Modelling of titanium compound formation in blast furnace hearth' Paper presented at 5th International Congress on the Science and Technology of Ironmaking, ICSTI 2009, Shanghai, China, 20/10/09 - 22/10/09, pp. 851-856.

Modelling of titanium compound formation in blast furnace hearth. / Guo, Baoyu; Zulli, Paul; Maldonado, Daniel; Yu, Aibing; Shen, Yansong.

2009. 851-856 Paper presented at 5th International Congress on the Science and Technology of Ironmaking, ICSTI 2009, Shanghai, China.

Research output: Contribution to conferencePaperOther

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T1 - Modelling of titanium compound formation in blast furnace hearth

AU - Guo, Baoyu

AU - Zulli, Paul

AU - Maldonado, Daniel

AU - Yu, Aibing

AU - Shen, Yansong

PY - 2009/12/1

Y1 - 2009/12/1

N2 - In a blast furnace. Titanium from titania addition can react with carbon and nitrogen in molten pig iron to form titanium carbonitride, giving the so-called titanium-rich scaffold on the hearth surface, to protect the hearth from further erosion. The current paper uses a mathematical model based on computational fluid dynamics to simulate the liquid metal flow, heat transfer and formation of solid particles. The model considers the fluid/solid flow through a packed bed, conjugated heat transfer, species transport and thermodynamic of key chemical reactions. A region of high solid particle concentration is predicted at the hearth bottom surface. Regions of solid formation and dissolution can be identified which depend on the local temperature and chemical equilibrium. The model provides an insight into the fundamental mechanism of solid formation in the blast furnace hearth.

AB - In a blast furnace. Titanium from titania addition can react with carbon and nitrogen in molten pig iron to form titanium carbonitride, giving the so-called titanium-rich scaffold on the hearth surface, to protect the hearth from further erosion. The current paper uses a mathematical model based on computational fluid dynamics to simulate the liquid metal flow, heat transfer and formation of solid particles. The model considers the fluid/solid flow through a packed bed, conjugated heat transfer, species transport and thermodynamic of key chemical reactions. A region of high solid particle concentration is predicted at the hearth bottom surface. Regions of solid formation and dissolution can be identified which depend on the local temperature and chemical equilibrium. The model provides an insight into the fundamental mechanism of solid formation in the blast furnace hearth.

KW - Blast furnace hearth

KW - CFD modelling

KW - Titanium solidification

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Guo B, Zulli P, Maldonado D, Yu A, Shen Y. Modelling of titanium compound formation in blast furnace hearth. 2009. Paper presented at 5th International Congress on the Science and Technology of Ironmaking, ICSTI 2009, Shanghai, China.