An application of infrared analysis to determine the mineralogical phases formation in fluxes for thin slab casting of steel

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Abstract

The Fourier Transformed Infrared (FTIR) spectra analysis of two fluxes used in the thin slab casting process of steel were carried out in order to identify the mineralogical species present in fluxes as received and after a heat treatment to 1573 K and further solidification at two different cooling velocities. Fluxes as received show the presence of wollastonite (CaO·SiO2) and a sodium carbonate (Na2CO 3) as the main components; after the heat treatment, there was almost a whole transformation from the original compounds to cuspidine (3CaO·2SiO2·CaF2) and nepheline (Na 2O·Al2O3·2SiO2) phases. These results were confirmed by X-ray powder diffraction (XRD) to the slowly cooling velocity. The FTIR technique is proposed as a useful and complementary technique to X-ray diffraction to study the structure of commercial fluxes for thin slab casting. © 2011 Elsevier B.V. All rights reserved.
Original languageAmerican English
Pages (from-to)323-326
Number of pages290
JournalJournal of Fluorine Chemistry
DOIs
StatePublished - 1 May 2011
Externally publishedYes

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