Study of the Mechanochemical Reduction of Ilmenite Concentrate by Addition of Aluminum

• Authors: M. Achimovičová , E. Gock , E. Turianicová , N. Kostova , N. Velinov , M. Kaňuchová , P. Baláž
• Languages of publication: EN

Abstracts

EN

Mechanochemical reduction of ilmenite concentrate (FeTiO_{3}) with elemental aluminum powder was performed by high-energy milling in an industrial eccentric vibratory ball mill ESM 656-0.5 ks (Siebtechnik, Germany). The mechanochemically reduced ilmenite with various times of milling was characterized by X-ray diffraction analysis, which confirmed the presence of the Al_2O_3 and Fe_2Ti phases after 120 min of milling. Thermal analysis evidenced the completion of a mechanochemical reduction during milling. After 360 min of milling, the Fe_2Ti phase decomposed to α-(Fe,Ti) alloy, which was proven by ^{57}Fe Mössbauer spectroscopy. X-ray photoelectron spectroscopy detected the amorphous TiO phase in product after mechanochemical reduction, which is in accordance with thermodynamic prediction. Decreasing of specific surface area after 60 min of milling resulted from growing layers of the solid products of FeTiO_3 mechanochemical reduction.

Keywords

EN

77.84.Cg; 81.20.Wk; 81.20.Ev; 82.33.Pt

Discipline

• 81.20.Wk: Machining, milling
• 82.33.Pt: Solid state chemistry
• 77.84.Cg: PZT ceramics and other titanates
• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 4
• Pages: 867-870

Dates

published

2014-10

Contributors

author

M. Achimovičová

• Institute of Mineral and Waste Processing, Waste Disposal and Geomechanics, Technical University-Clausthal, Walther-Nernst 9, Clausthal, Germany
• Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, Košice, Slovakia

author

E. Gock

• Institute of Mineral and Waste Processing, Waste Disposal and Geomechanics, Technical University-Clausthal, Walther-Nernst 9, Clausthal, Germany

author

E. Turianicová

• Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, Košice, Slovakia

author

N. Kostova

• Institute of Catalysis, Bulgarian Academy of Sciences, Acad. Georgi Bonchev 11, Sofia, Bulgaria

author

N. Velinov

• Institute of Catalysis, Bulgarian Academy of Sciences, Acad. Georgi Bonchev 11, Sofia, Bulgaria

author

M. Kaňuchová

• Faculty of Mining, Ecology, Process Control and Geotechnology, Technical University-Košice, Letná 9, Košice, Slovakia

author

P. Baláž

• Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, Košice, Slovakia

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Identifiers

DOI

10.12693/APhysPolA.126.867