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- Najafabadi AHMADI
- Graduate School, Nagoya University
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- Hirasawa Masahiro
- School of Engineering, Nagoya University
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- Sano Masamichi
- School of Engineering, Nagoya University
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In the present study, the deoxidation of iron melt is performed by immersing MgO-C porous tube with and without evacuating its inside. It is found that Mg vapor produced by the reaction between MgO and C of the tube takes part in the deoxidation process. The deoxidation product in a gaseous form (CO) is easily removed from the melt and the product in a solid form (MgO) attaches on the tube surface or floats up to the free surface of the melt. Reducing the internal pressure of the enhances the carbon-oxygen reaction. The amount of removed oxygen from the melt increases with initial oxygen content of the melt. This is because of higher efficiency of reaction between Mg vapor and oxygen in the melt. Initial carbon supply from the porous tube is large and hence, the carbon content in the melt increases rapidly at the initial stage of the reaction. At higher initial oxygen content, intensive CO boiling occurs in the melt. Under this condition the carbon content of the tube does not show an appreciable effect on the deoxidation rate. The oxygen supply by the dissociation of MgO crucible prevents the oxygen content of the melt from decreasing to <20 ppm.
収録刊行物
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- ISIJ International
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ISIJ International 36 (11), 1366-1372, 1996
一般社団法人 日本鉄鋼協会
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詳細情報 詳細情報について
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- CRID
- 1390282681427956736
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- NII論文ID
- 10015619827
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- NII書誌ID
- AA10680712
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- COI
- 1:CAS:528:DyaK28XntFCksbc%3D
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- ISSN
- 13475460
- 09151559
- http://id.crossref.org/issn/00211583
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可