Titanium metal preparation from titanium dioxide (TiO₂) 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 TiO₂–KClO₄–Al(Mg)-KClO₄–CaF₂ 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, TiO₂ precursor type, and CaF₂ 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

中文翻译：

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燃烧-铝-镁热还原 TiO2 生产富钛锭

从二氧化钛 (TiO ₂ ) 制备钛金属已成为众多研究的主题，以克服 Kroll 工艺核心的氯化工艺。在本研究中，采用铝镁热还原方法，通过在氩气中燃烧 TiO ₂ -KClO ₄ -Al(Mg)-KClO ₄ -CaF ₂组合物的放热混合物来获得富钛锭。测量燃烧温度，并突出显示反应斑块。根据 Al 粒径、Al/Mg 比、TiO ₂前体类型和 CaF _{2仔细检查富钛锭的合成条件}专注。XRD分析表明，在优化的实验条件下获得的锭为单相Ti金属。ICP-MS 分析显示 Ti 锭中残留的 Al 和 O 分别具有 3.5 和 4.0 wt pct 含量。

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