Combustion-Alumino-Magnesiothermic Reduction of TiO 2 to Produce a Ti-Rich Ingot

Titanium metal preparation from titanium dioxide (TiO 2 ) has been the subject of numerous studies to overcome the chlorination processes at the heart of the Kroll process. In this study, an alumino-magnesiothermic reduction approach is employed to obtain a Ti-rich ingot via the combustion of an exothermic mixture of TiO 2 –KClO 4 –Al(Mg)-KClO 4 –CaF 2 composition in argon. The combustion temperatures are measured, and the reaction patches are highlighted. The synthesis conditions of the Ti-rich ingot were carefully examined depending on the Al particle size, Al/Mg ratio, TiO 2 precursor type, and CaF 2 concentration. XRD analysis states that the ingot obtained under optimized experimental conditions is single-phase Ti metal. ICP-MS analysis revealed residual Al and O in the Ti ingot with 3.5 and 4.0 wt pct content, respectively. Graphical abstract