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タイトル: | Activities of FeO and P₂O₅ in dephosphorization slags Co existing with solid solutions between di-calcium silicate and tri-calcium phosphate |
著者: | Matsugi, Ryota Miwa, Kohei Hasegawa, Masakatsu |
著者名の別形: | 松儀, 亮太 三輪, 紘平 長谷川, 将克 |
キーワード: | dephosphorization activity di-calcium silicate tri-calcium phosphate solid solution |
発行日: | Oct-2017 |
出版者: | Iron and Steel Institute of Japan |
誌名: | ISIJ International |
巻: | 57 |
号: | 10 |
開始ページ: | 1718 |
終了ページ: | 1724 |
抄録: | Towards better understanding of the phosphorus removal from hot metal with low-basicity slags, electrochemical technique incorporating MgO-stabilized zirconia was conducted to measure simultaneously the activities of FeO and P₂O₅ within heterogeneous CaO–SiO₂–P₂O₅–FeO slags. The FeO activity was fairly insensitive to the variation of Ca₃P₂O₈ content in solid solutions between Ca₂SiO₄–Ca₃P₂O₈, while the P₂O₅ activity increased with an increase in Ca₃P₂O₈ content. By using the present values for activities, phosphorus distribution ratios were estimated between molten slag and carbon-saturated iron. The relationship between phosphorus distribution ratio and FeO content in molten slag was consistent with the phase diagram of the pseudo-ternary CaO–(SiO₂–P₂O₅)–FeO system. |
著作権等: | © 2017 The Iron and Steel Institute of Japan. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs license. |
URI: | http://hdl.handle.net/2433/265373 |
DOI(出版社版): | 10.2355/isijinternational.ISIJINT-2017-082 |
出現コレクション: | 学術雑誌掲載論文等 |
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