Condensation of P_2O_5 at the Interface between 2CaO・SiO_2 and CaO-SiO_2-FeO_x-P_2O_5 Slag
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概要
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In order to clarify the reaction behavior of phosphorus in the multi phase flux, the solid 2CaO·SiO2 piece was reacted with the CaO–SiO2–FeOx–P2O5 slag for 1 to 180 s at 1573 or 1673 K. The interfaces between the original solid and liquid phases were observed and compositions of both phases were analyzed by SEM/EDS.The result shows that P2O5 is condensed at the rim layer of 2CaO·SiO2 piece very fast in less than 1 s. The P2O5 condensed phases are identified as the mixture of 2CaO·SiO2–3CaO·P2O5 solid solution and the surrounding liquid slag. After reaction for longer time, the reaction behavior of P2O5 depends on the reaction temperature and initial slag composition. Reaction temperature and mole ratio of CaO/SiO2 in the initial slag influence the stability of P2O5 condensed phases. Higher temperature induces the dissolution of P2O5 condensed phases while larger mole ratio of CaO/SiO2 has the opposite effect.
- 社団法人 日本鉄鋼協会の論文
- 2009-09-15
著者
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MATSUURA Hiroyuki
Department of Physics, Niigata University
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Yang Xiao
Department Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku Univers
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TSUKIHASHI Fumitaka
Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of To
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Matsuura Hiroyuki
Dep. Of Advanced Materials Sci. Graduate School Of Frontier Sciences The Univ. Of Tokyo
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Matsuura Hiroyuki
Department Of Advanced Materials Science Graduate School Of Frontier Sciences The University Of Toky
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Tsukihashi Fumitaka
Department Of Advanced Materials Science Graduate School Of Frontier Sciences The University Of Toky
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Tsukihashi Fumitaka
Department Of Advanced Materials Graduate School Of Frontier Science The University Of Tokyo
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Yang Xiao
Department Of Advanced Materials Science Graduate School Of Frontier Sciences The University Of Toky
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Tsukihashi Fumitaka
Graduate School Of Frontier Sciences The Univ. Of Tokyo
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Tsukihashi Fumitaka
Department Of Advanced Materials Science Graduate School Of Frontier Sciences The University Of Toky
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Tsukihashi Fumitaka
Department Of Advanced Material Science The University Of Tokyo
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