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Density Measurements of CaO-MnO-SiO2 Slags
- Authors
- Lee, Joonho; Hoai, Le Thu; Choe, Joongkil; Park, Joo Hyun
- Issue Date
- 2012
- Publisher
- IRON STEEL INST JAPAN KEIDANREN KAIKAN
- Keywords
- Archimedean method; CaO-MnO-SiO2 slag; density; molar volume; silicate network structure; thermal expansion coefficient
- Citation
- ISIJ INTERNATIONAL, v.52, no.12, pp.2145 - 2148
- Indexed
- SCIE
SCOPUS
- Journal Title
- ISIJ INTERNATIONAL
- Volume
- 52
- Number
- 12
- Start Page
- 2145
- End Page
- 2148
- ISSN
- 0915-1559
- Abstract
- 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 (-d rho/dT) was in the range of 1.46-3.10 x 10(-1) kg/m(3) 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 1 773 K were estimated 21.0, 17.2, and 28.0 x 10(-6) m(3)/mol, respectively. The molar excess volume was expressed by V-Ex = Omega AX(SiO2) (1-X-SiO2), where Omega = 8.97 x 10(-6) m(3)/mol at 1 773 K. The thermal expansion coefficient decreased with increasing m(3)/mol because of the enhanced silicate network structure.
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Related Researcher
- LEE, Joon ho
- College of Engineering (Department of Materials Science and Engineering)