A containerless approach was used to investigate the electrochemical behaviour of TiO 2 -SiO 2 -Al 2 O 3 -MgO -CaO slags in their molten state. Iridium was used in a three-electrode configuration to perform a combination of electrochemical techniques inside a modified thermal imaging furnace. The real-time visualisation during experimentation and the post-mortem microscopy analysis confirmed the direct production of an Ir−Ti−Si alloy and the evolution of oxygen during electrolysis. Thermodynamic properties of the slag were predicted with FactSage and were consistent with experiment. The results justify the use of this method to better characterize the potential of these systems as a secondary source of materials.
The reduction process during the electrochemical production of titanium via the electrolysis of molten TiO 2 − SiO 2 − Al 2 O 3 − MgO − CaO slags has been investigated. A laboratory scale, electrolytic cell was designed to study the effect of TiO 2 concentration at ultra-high temperatures. Galvanostatic and potentiostatic experiments were performed and results were consistent with thermodynamic predictions using FactSage. We demonstrate the direct production of Si-Ti alloys from the molten oxide mixture. The reduction of Si and Ti ions from the melt on a molybdenum electrode is a complex process that combines electron transfer and chemical phenomena. For the concentrations studied, the extraction of pure metallic Ti directly from ironmaking slag is unlikely without the prior removal of SiO 2 or other chemical modifications to the system.
The reduction process during the electrochemical production of titanium via the electrolysis of molten TiO 2 − SiO 2 − Al 2 O 3 − MgO − CaO slags has been investigated. A laboratory scale, electrolytic cell was designed to study the effect of TiO 2 concentration at ultra-high temperatures. Galvanostatic and potentiostatic experiments were performed and results were consistent with thermodynamic predictions using FactSage. We demonstrate the direct production of Si-Ti alloys from the molten oxide mixture. The reduction of Si and Ti ions from the melt on a molybdenum electrode is a complex process that combines electron transfer and chemical phenomena. For the concentrations studied, the extraction of pure metallic Ti directly from ironmaking slag is unlikely without the prior removal of SiO 2 or other chemical modifications to the system.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.