Analysis of Dephosphorization Reaction Using a Simulation Model of Hot Metal Dephosphorization by Multiphase Slag

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概要

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• In most cases, the slag used in hot metal dephosphorization is saturated with dicalcium silicate in the solid phase and the partition ratio of phosphorus between dicalcium silicate and the liquid slag is high. This indicates the important role of dicalcium silicate in dephosphorization. To understand the reaction kinetics and identify optimum treatment conditions, it is very important to know the influence of the solid phases in the slag. In this study, a new reaction model for hot metal dephosphorization that considers the effects of dicalcium silicate and the dissolution rate of lime is applied to simulate laboratory-scale experiments.The calculated results are in good agreement with the experimental results for various slag compositions and methods of flux and oxidizer addition. The influence of various factors on the reaction efficiency is discussed using this simulation model. The optimum basicity and combination of stirring energy and oxidizer supply rate are found. The importance of the precipitation behavior of the solid phase in slag is clarified.

• 社団法人 日本鉄鋼協会の論文
• 2009-09-15

著者

• Maruoka Nobuhiro

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• SHIBATA Hiroyuki

  Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University

• Kitamura Shin-ya

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• Shibata Hiroyuki

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• Shibata Hiroyuki

  Institute For Chemical Research Kyoto University

• Maruoka Nobuhiro

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• Kitamura Shin-ya

  Institute Of Multi-disciplinary Research On Advanced Materials Tohoku University

• Miyamoto Ken-ichiro

  Muroran R&d Laboratories Nippon Steel Corporation

• MATSUO Michitaka

  Environment & Process Technology Center, Nippon Steel Corporation

• Matsuo Michitaka

  Environment & Process Technology Center Nippon Steel Corporation

• Kitamura Shin-ya

  Inst. Of Multidisciplinary Res. For Advanced Materials Tohoku Univ.

• Shibata Hiroyuki

  Institute For Advanced Materials Processing Tohoku University

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