ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Structure–Property Correlations of CaO–SiO2–MnO Slag Derived from Raman Spectroscopy
Joo Hyun Park
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2012 Volume 52 Issue 9 Pages 1627-1636


The quantitative structural information such as the relative abundance of silicate discrete anions (Qn units) and the concentration of three types of oxygens, viz. free–, bridging– and nonbridging oxygen can be obtained from micro–Raman spectra of the quenched CaO–SiO2–MnO glass samples. Various transport properties such as viscosity, density, and electrical conductivity can be expected as a simple linear function of ‘ln (Q3/Q2),’ indicating that these thermophysical properties are strongly dependent on a degree of polymerization of silicate melts in the composition of silica content greater than about 30 mol%. The present methodology is believed to be widely extended to various slag systems in ferrous and non–ferrous metallurgical communities.

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© 2012 by The Iron and Steel Institute of Japan
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