ID | 58229 |
フルテキストURL | |
著者 |
Matsuda, Yamato
Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University
Uddin, Md. Azhar
Department of Material and Energy Science, Graduate School of Environmental and Life Science, Okayama University
Miyata, Yasuhito
Slag & Refractories Research Department, Steel Research Laboratory, JFE Steel Corporation
Kiso, Eiji
Marketing Development, Slag & Cement Division, Nippon Steel Corporation
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抄録 | The alkali elution behavior of steelmaking slag in seawater was kinetically investigated and simulated under continuous flow in an open channel vessel with packed bed of steelmaking slag. Two types of steelmaking slags, viz. decarburization slag and dephosphorization slag, were used in this study. The alkali elution rate of decarburization slag was larger than that of dephosphorization slag due to larger free CaO content. The pH value for dephosphorization slag was almost the same as the seawater pH value in 3–4 days, whereas that for decarburization slag was stabilized in 3 days although the pH value was slightly larger than that of seawater. The capacity coefficients of alkali elution for dephosphorization and decarburization slags decreased together in an exponential manner with time. Based on a regression equation on the mass transfer capacity coefficient change with time, the alkali elution behavior was simulated and the calculated results agreed well with the experimental ones. The temporal pH change was predicted by changing slag surface area and seawater flow rate as a parameter. According to the simulation results for dephosphorization slag, the seawater pH value did not reach a high level in the ocean area.
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キーワード | Steelmaking slag
Alkali elution
Seawater
Open channel
Packed bed
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備考 | This fulltext is available in Feb., 2021
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発行日 | 2020-02-03
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出版物タイトル |
Journal of Sustainable Metallurgy
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巻 | 6巻
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出版者 | The Minerals, Metals & Materials Society
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開始ページ | 132
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終了ページ | 141
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ISSN | 2199-3823
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資料タイプ |
学術雑誌論文
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言語 |
英語
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OAI-PMH Set |
岡山大学
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論文のバージョン | author
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DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.1007/s40831-020-00264-9
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