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Minerals 2018, 8(1), 2; https://doi.org/10.3390/min8010002

Hydrometallurgical Processing Technology of Titanomagnetite Ores

1
Innovative Technology Center, National Research Tomsk State University, Lenin Avenue 36, 634050 Tomsk, Russia
2
School of Nuclear Science and Engineering, National Research Tomsk Polytechnic University, Lenin Avenue 30, 634050 Tomsk, Russia
*
Author to whom correspondence should be addressed.
Received: 7 November 2017 / Revised: 13 December 2017 / Accepted: 21 December 2017 / Published: 24 December 2017
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Abstract

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. View Full-Text
Keywords: titanomagnetite ores; hydrometallurgical process; leaching; titanium-vanadium concentrates; iron concentrates; Fe/Ti ratio titanomagnetite ores; hydrometallurgical process; leaching; titanium-vanadium concentrates; iron concentrates; Fe/Ti ratio
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Sachkov, V.I.; Nefedov, R.A.; Orlov, V.V.; Medvedev, R.O.; Sachkova, A.S. Hydrometallurgical Processing Technology of Titanomagnetite Ores. Minerals 2018, 8, 2.

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