Density Measurements of CaO–MnO–SiO2 Slags
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概要
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Density measurements of CaO–MnO–SiO2 slags were carried out using the Archimedean method. The density decreased with increasing temperature, and the negative temperature coefficient (–dρ/dT) was in the range of 1.46–3.10 × 10–1 kg/m3 K. At a fixed CaO content (25 wt%) and at a fixed SiO2 content (30 wt%), the density of CaO–MnO–SiO2 slag increased with increasing MnO content. The molar volumes of CaO, MnO and SiO2 at 1773 K were estimated 21.0, 17.2, and 28.0 × 10–6 m3/mol, respectively. The molar excess volume was expressed by VEx = ΩXSiO2 (1–XSiO2), where Ω = –8.97 × 10–6 m3/mol at 1773 K. The thermal expansion coefficient decreased with increasing XSiO2 because of the enhanced silicate network structure.
著者
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Lee Joonho
Department Of Materials Engineering And Processing Osaka University
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Park Joo
School Of Materials Sci. And Engineering Univ. Of Ulsan
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Choe Joongkil
Graduate student, Department of Material Science and Engineering, Korea University
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Hoai Le
Graduate student, Department of Material Science and Engineering, Korea University
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