Study of initial stage of mechanochemical transformation in pyrite
The initial stage of transformation of pyrite to Fe(II)-sulfate as a result of mechanical milling is studied by X-ray powder diffraction (XRD), Moessbauer spectroscopy (MS), Infrared (IR) and X-ray photoelectron spectroscopy (XPS) techniques. A degree of conversion of 0.071 is achieved in the time i...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2007-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2007/1450-53390701057P.pdf |
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| _version_ | 1832572511097716736 |
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| author | Paneva D. Mitova D. Manova E. Kolev H. Kunev B. Mitov I. |
| author_facet | Paneva D. Mitova D. Manova E. Kolev H. Kunev B. Mitov I. |
| author_sort | Paneva D. |
| collection | DOAJ |
| description | The initial stage of transformation of pyrite to Fe(II)-sulfate as a result of mechanical milling is studied by X-ray powder diffraction (XRD), Moessbauer spectroscopy (MS), Infrared (IR) and X-ray photoelectron spectroscopy (XPS) techniques. A degree of conversion of 0.071 is achieved in the time interval of 0 36 min. The kinetic data satisfy the equation of a shrinking core reaction 1-(1-α)1/3=kt. The reaction is of the first order. The calculated rate constant is k=6.434.10-4 min-1. . |
| format | Article |
| id | doaj-art-d5c56de5112e4edcb574e9f1a3874c6e |
| institution | Kabale University |
| issn | 1450-5339 |
| language | English |
| publishDate | 2007-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-d5c56de5112e4edcb574e9f1a3874c6e2025-02-02T09:30:34ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392007-01-01431577010.2298/JMMB0701057PStudy of initial stage of mechanochemical transformation in pyritePaneva D.Mitova D.Manova E.Kolev H.Kunev B.Mitov I.The initial stage of transformation of pyrite to Fe(II)-sulfate as a result of mechanical milling is studied by X-ray powder diffraction (XRD), Moessbauer spectroscopy (MS), Infrared (IR) and X-ray photoelectron spectroscopy (XPS) techniques. A degree of conversion of 0.071 is achieved in the time interval of 0 36 min. The kinetic data satisfy the equation of a shrinking core reaction 1-(1-α)1/3=kt. The reaction is of the first order. The calculated rate constant is k=6.434.10-4 min-1. .http://www.doiserbia.nb.rs/img/doi/1450-5339/2007/1450-53390701057P.pdfmineralsmechanochemistrypyrite oxidationkineticsMoessbauer spectroscopy |
| spellingShingle | Paneva D. Mitova D. Manova E. Kolev H. Kunev B. Mitov I. Study of initial stage of mechanochemical transformation in pyrite Journal of Mining and Metallurgy. Section B: Metallurgy minerals mechanochemistry pyrite oxidation kinetics Moessbauer spectroscopy |
| title | Study of initial stage of mechanochemical transformation in pyrite |
| title_full | Study of initial stage of mechanochemical transformation in pyrite |
| title_fullStr | Study of initial stage of mechanochemical transformation in pyrite |
| title_full_unstemmed | Study of initial stage of mechanochemical transformation in pyrite |
| title_short | Study of initial stage of mechanochemical transformation in pyrite |
| title_sort | study of initial stage of mechanochemical transformation in pyrite |
| topic | minerals mechanochemistry pyrite oxidation kinetics Moessbauer spectroscopy |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2007/1450-53390701057P.pdf |
| work_keys_str_mv | AT panevad studyofinitialstageofmechanochemicaltransformationinpyrite AT mitovad studyofinitialstageofmechanochemicaltransformationinpyrite AT manovae studyofinitialstageofmechanochemicaltransformationinpyrite AT kolevh studyofinitialstageofmechanochemicaltransformationinpyrite AT kunevb studyofinitialstageofmechanochemicaltransformationinpyrite AT mitovi studyofinitialstageofmechanochemicaltransformationinpyrite |