|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||8th International Symposium on High Temperature Metallurgical Processing
||Dissolution Behavior of Fe from Glassy Oxide Phase in Steelmaking Slag
||Shohei Koizumi, Xu Gao, Shigeru Ueda, Shin-ya Kitamura
|On-Site Speaker (Planned)
Steelmaking slag is a useful fertilizer for paddy growth as it supplies Ca and Si to the soil water efficiently. In addition, to suppress the H2S generation in paddy soil, supplement of Fe from slag is expected. By our previous research, it was found that Fe is supplied mainly from CaO-SiO2-FeO glassy phase in slag. In this research, the glassy oxide of various composition was synthesized and investigated their dissolution behavior of Fe and the other cations into the aqueous solution of pH=5, which simulate the early stage of planting. The result showed that the dissolution ratio of Fe intensively increased with increasing the ratio of Fe2+/Fe3+, and showed local maximum by the change in basicity. This result is discussed by the glass structure considering the ratio of non-bonding oxygen.
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