Abstract
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.
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Paneva, D., Mitova, D., Manova, E., Kolev, H., Kunev, B., & Mitov, I. (2007). Study of initial stage of mechanochemical transformation in pyrite. Journal of Mining and Metallurgy, Section B: Metallurgy, 43(1), 57–70. https://doi.org/10.2298/JMMB0701057P
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