CO_2-CO 混合ガスと平衡する酸化鉄融液の密度

概要

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Densities of iron oxide melts in equilibrium with CO_2-CO gas mixtures have been measured by the Archimedean method employing the double-bob technique. The explored temperature range is 1450 to 1525℃ and composition range is Fe^<3+>/ΣFe=0.093 to 0.358. At constant temperatures densities of the melts decrease with increase of Fe^<3+> content. At higher Fe^<3+> contents this decrease of density becomes more gradual. At constant compositions densities decrease linearly with increase of temperature. Expansivities of the melts decrease with increase of Fe^<3+> content. The results are interpreted with a proposed model on the constitution of the melts. It is pointed out that oxygen ions are much more closely attracted to Fe^<3+> than to Fe^<2+> and this is responsible for the trends in the relations of both density and expansivity with composition.
社団法人日本鉄鋼協会の論文
1968-09-01