Structure-Property Relationship of CaO-MgO-SiO2 Slag: Quantitative Analysis of Raman Spectra

Abstract

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-MgO glass samples. Various transport properties such as viscosity, density, and electrical conductivity can be expected as a simple linear function of "ln (Q(3)/Q(2))," indicating that these physical properties are strongly dependent on a degree of polymerization of silicate melts. The methodology outlined in the current study can be extended to predict the physicochemical properties of silicate melts in ferrous and non-ferrous metallurgical processes.