Journal
ISIJ INTERNATIONAL
Volume 52, Issue 9, Pages 1627-1636Publisher
IRON STEEL INST JAPAN KEIDANREN KAIKAN
DOI: 10.2355/isijinternational.52.1627
Keywords
silicate structure; Raman spectroscopy; viscosity; density; conductivity; Q(3)/Q(2) ratio; degree of polymerization
Categories
Funding
- University of Ulsan
- Korea Evaluation Institute of Industrial Technology (KEIT) [10033508] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The quantitative structural information such as the relative abundance of silicate discrete anions (Q(n) 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 'In (Q(3)/Q(2)),' 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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