Hydrometallurgical processing technology of titanomagnetite ores

Victor Ivanovich Sachkov, Roman Andreevich Nefedov, Vladislav Viktorovich Orlov, Rodion Olegovych Medvedev, Anna Sergeevna Sachkova

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


In this paper, we study the possibility of obtaining iron and titanium-vanadium concentrates with highest contents of iron and titanium, respectively, through hydrometallurgical processing of the titanomagnetite ores of the Chineisk deposit. We varied two key parameters to determine the efficiency of the process: (a) concentration of leaching solution (ammonium fluoride), and (b) acidity of solution. Ammonium fluoride concentration was varied from 0.08 mol/L to 4.2 mol/L with the other fixed parameters. It was shown that optimum ammonium fluoride concentration for leaching the ore is 0.42 mol/L, at these concentrations iron and titanium contents are about 62.8 wt % and 3.5 wt % in solid phase, respectively. The acidity of solution was changed by adding of hydrofluoric acid with varied concentration (from 0.86 mol/L to 4.07 mol/L) to ammonium fluoride solution with fixed concentration of 0.42 mol/L. The best results (degree of titanium extraction = 63.7%) were obtained when using a solution of hydrofluoric acid with concentration 4.07 mol/L. In this case, the addition of acid makes it possible to increase the Fe/Ti ratio by 3.4 times in comparison with the original ore. Thus, we conclude that acidity and the concentration of ammonium fluoride solution significantly influences the selectivity of the hydrometallurgical process.

Original languageEnglish
Article number2
Issue number1
Publication statusPublished - 1 Jan 2018


  • Fe/Ti ratio
  • Hydrometallurgical process
  • Iron concentrates
  • Leaching
  • Titanium-vanadium concentrates
  • Titanomagnetite ores

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

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