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The present paper investigated the crystallization behavior of Ti-concentrating phases in titanium-bearing blast furnace slags influenced by the silica content. The objective was to recycle the titanium from titanium-bearing blast furnace slags by enriching Ti element in anosovite. The effect of SiO on the formation of anosovite in the titanium-bearing blast furnace slags was studied under C/CO equilibrated atmospheres using a combination of X-ray Diffraction (XRD) and Energy Dispersive X-ray Spectroscopy (EDX). It was found that, under the C/CO equilibrated atmospheres, the formed primary phases transformed from perovskite to anosovite by adding SiO up to 35 wt% in the slags. The related mechanism was investigated according to the theory of molten slags structure and the principle of thermodynamics. [ABSTRACT FROM AUTHOR]

The article presents a study that employed gas-slag equilibrium technique to measure the thermodynamic activity of vanadium oxide. Results revealed that the activity of vanadium (III) oxide in slag shows a negative deviation from ideality in the composition range. Activities of vanadium (III) oxide did not show any significant alteration with increasing temperature. Increase in basicity was discovered to cause an alteration in the dispersion of vanadium between the slag and the alloy phases.

The article presents a study on the thermodynamic activities of chromium oxide. The chromium oxide, which served as an important alloying element in stainless steel, were contained in CaO-SiO2-MgO-AI2O3-CrOx melts and are measured through the use the gas-slag equilibrium technique. Oxygen partial pressure and gas mixtures of CO, CO2 and argon were observed, wherein it reveals that CrO activities showed a strong positive deviation.