A Thermodynamic and Kinetic Model of Reoxidation and Desulphurisation on the Ladle Furnace

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概要

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• A thermodynamic and kinetic model of reoxidation and desulphurisation in the ladle furnace has been developed by using a two-dimensional fluid-flow model combined with equations expressing the thermodynamics of reoxidation and desulphurisation. More specifically, ladle vacuum treatment of a gas-stirred ladle has been simulated. In order to describe the activities of the oxide components of the slag, expressions by Ohta and Suito1) were adopted. The thermodynamic model describes the slag/metal equilibria between Al, Si, O, Mn and S in the molten steel and Al2O3, SiO2, FeO, MnO and S in the slag. A fluid dynamic model that considers the slag, steel and argon phases derives the kinetics. Results from an isothermal calculation have been heuristically compared with industrial plant data and they show good agreement. The model results have also revealed that the reduction of silica plays a part in aluminium loss during ladle treatment.

• 社団法人 日本鉄鋼協会の論文
• 2000-11-15

著者

• Jonsson Par

  Div.of Metallurgy Royal Institute Of Technology

• Jonsson Par

  Div.of Metallurgy Kth

• Jonsson Lage

  Div.of Metallurg Kth

• ANDERSSON Margareta

  Div.of Metallurgy, KTH

• Andersson Margareta

  Div.of Metallurgy Kth

関連論文

• Heating and Electromagnetic Stirring in a Ladle Furnace-A Simulation Model
• Modeling of a DC Electric Arc Furnace-Heat Transfer from the Arc
• Ideas for Process Control of Inclusion Characteristics During Steelmaking
• A Thermodynamic and Kinetic Model of Reoxidation and Desulphurisation on the Ladle Furnace

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