Infrared Emission Spectra of CaF2–CaO–SiO2 Melt

The infrared emission spectra of CaF2–CaO–SiO2 melt were investigated by a method combining infrared emission spectroscopy and the hot-filament technique. Emission for spectra related to Si–O bond can be observed by this in situ technique. The influence of SiO2 and fluoride content on the spectrum w...

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Bibliographic Details
Published inISIJ International Vol. 40; no. 8; pp. 739 - 743
Main Authors Ueda, Shigeru, Koyo, Hirotaka, Ikeda, Takashi, Kariya, Yoshiharu, Maeda, Masafumi
Format Journal Article
LanguageEnglish
Published Tokyo The Iron and Steel Institute of Japan 01.01.2000
Iron and Steel Institute of Japan
Subjects
Applied sciences
CaF2–CaO–SiO2 system
density functional theory
Exact sciences and technology
FT-IR
Hot filament technique
Metallurgical fundamentals
Metals. Metallurgy
Production of metals
Molten slag
Infrared spectrometry
Calcium oxide
Density functional
Silicon oxides
Iron steel industry
Experimental study
Calcium fluoride
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Summary:The infrared emission spectra of CaF2–CaO–SiO2 melt were investigated by a method combining infrared emission spectroscopy and the hot-filament technique. Emission for spectra related to Si–O bond can be observed by this in situ technique. The influence of SiO2 and fluoride content on the spectrum was investigated, and the emission attributable to bonds corresponding to siliconbridging oxygen and silicon-non bridg-ingoxygen was discussed. Results suggest that fluoride ion dominantly substitutes for a non-bridging bond in low SiO2 concentration region. The structure of silicate was compared with calculated infrared emission of Si–F–O.
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.40.739