Technique for upgrading ilmenite ore via triva-lent titanium ion

Hidehiro Sekimoto, Shuhei Yahaba, Yuji Tamada, Katsunori Yamaguchi

Research output: Contribution to conferencePaperpeer-review


A new technique for upgrading ilmenite ore to pure titanium was proposed and investigated. In this technique, the ilimenite ore is reduced to Fe and Ti2O3, which are then dissolved in an acid solution. After that, TiO2 is extracted from the solution by aeration. In this paper, the thermodynamic background of reduction of the complex oxide of titanium and iron, FeTiO3, and dissolution of titanium oxide in acid solution is discussed. We demonstrated the hydrometallurgical steps of the technique. As an example of the results, we successfully extracted 99.95 mass% TiO2 from the solution containing 0.1 mol L-1 Fe 2+ and 0.1 mol L-1 Ti3+ through the oxidation by aeration at condition of pH 0.5 and at 75 °C over 24 hours.

Original languageEnglish
Number of pages12
Publication statusPublished - 2013 Oct 8
Externally publishedYes
Event7th European Metallurgical Conference, EMC 2013 - Weimar, Germany
Duration: 2013 Jun 232013 Jun 26


Conference7th European Metallurgical Conference, EMC 2013


  • FeTiO
  • Hydrometallurgy
  • Synthetic rutile

ASJC Scopus subject areas

  • Metals and Alloys


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