Fundamental Study of Melt Formation and Transition Mechanism to Final Slag of Sinter
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概要
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Liquidus temperatures, obtained by the quenching technique, were studied for mixtures in the system CaO-SiO2-Al2O3-Fe3O4 in 10-7atm of PO2 atmosphere. Analysis by EPMA of final silicate slag of sinter revealed that chemical compositions lay in the field near the pseudo wollastonite-dicalcium silicate eutectic line between 1250°C and 1300°C of the diagram.N2 quenching of sintering pot during operation and sintering simulation experiments of raw mix showed that there were two types of primary melt, which were liquid silicate and liquid calcium ferrite. Liquid caclium ferrite generated two types of structure, one o f which was consisted of quarternary calcium ferrite and silicate slag, the other was mainly composed of dicalcium silicate and dicalcium ferrite or magnetite.With increasing temperature, primary silicate melt of low basicity dissolved dicalcium silicate to final slag of higher basicity.
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The Iron and Steel Institute of Japan | 論文
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