Abstract
The results of studies of the fractured porous structure of the organic matter of coals and the composition of mineral impurities in oxidized black coals are reported. Data of petrographic and electron-microscopic studies combined with microanalysis are given. The possibility of detecting the early stages of coal oxidation based on the appearance of iron sulfate and oxide formed from pyrite was demonstrated.
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Original Russian Text © V.I. Vyalov, M.I. Gamov, S.A. Epshtein, 2013, published in Khimiya Tverdogo Topliva, 2013, No. 2, pp. 57–61.
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Vyalov, V.I., Gamov, M.I. & Epshtein, S.A. Petrographic and electron-microscopic studies of the oxidation and mineral impurities of coal. Solid Fuel Chem. 47, 124–128 (2013). https://doi.org/10.3103/S0361521913020122
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DOI: https://doi.org/10.3103/S0361521913020122