Oxidation Reaction of Silicon in Molten Iron of High Carbon Concentration by FeO Containing Slag
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- PAN Wei
- Graduate School, Nagoya University
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- SANO Masamichi
- Faculty of Engineering, Nagoya University
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- HIRASAWA Masahiro
- Faculty of Engineering, Nagoya University
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- MORI Kazumi
- Faculty of Engineering, Nagoya University
Bibliographic Information
- Other Title
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- FeOを含有するスラグによる高炭素濃度溶鉄中シリコンの酸化反応
- FeO オ ガンユウスル スラグ ニ ヨル コウ タンソ ノウド ヨウテツチュ
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Abstract
The rate of oxidation reaction of silicon between Fe-4.4%C-Si melt and Li2O-CaO-SiO2-FeO slag has been investigated under the condition of mechanical stirring at 1 300°C. The initial concentrations of FeO in slag, (%FeO)0, and silicon in metal, [%Si]0, were 2.530 and 0.0080.1, respectively. The rotating speed of the stirrer was 50400 rpm.<BR>The activity of silica, aSiO<SUB>2</SUB>, in the slag has also been determined experimentally by measuring the concentration of Si in carbon saturated iron equilibrated with SiO2 in Li2O-CaO-SiO2 slag at PCO=1 atm and 1 300°C.<BR>In the explored concentration range of FeO in the slag, the apparent metal-side mass transfer coefficient of Si, k'si, increases with increasing (%FeO)0, while k'si does not change much with varying [%Si]0. It is found that k'si increases approximately in proportion to the 1/3 power of the rotating speed of the stirrer, but the effect of mechanical stirring on the mass transfer of FeO in the slag is negligible except at lower (%FeO). A mathematical model describing the simultaneous reactions of Si, C and FeO is developed. The reaction mechanism of the present slag-metal reactions is explained with the aid of the mathematical model.
Journal
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- Tetsu-to-Hagane
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Tetsu-to-Hagane 74 (1), 61-68, 1988
The Iron and Steel Institute of Japan
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Details 詳細情報について
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- CRID
- 1390282680127582080
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- NII Article ID
- 110001492119
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- NII Book ID
- AN00151251
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- ISSN
- 18832954
- 00211575
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- NDL BIB ID
- 3157513
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed