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The Study of Thermal Destruction and Combustion of Coal and Peat as Components of Pulverized Coal Fuel

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Metallurgist Aims and scope

The influence of the oxygen content in the gas phase on the thermal destruction and combustion of peat and coals with various degrees of metamorphism were studied using a device for synchronous thermal analysis to optimize the conditions for obtaining pulverized coal fuel. It was found that the thermal destruction rate decreases at higher degrees of metamorphism (e.g., 2.69%/min for peat; 1.48%/min for brown coal; 0.55%/min for lean coal, and 0.30%/min for anthracite). The volatile component release temperature decreases (from 420°C for lean coal to 220°C for peat) and remains approximately the same in the presence of oxygen up to the composition of synthetic air. The structure of peat particles was studied on a scanning electron microscope. They have an elongated shape measuring from 50 to 400 μm in size. The predominant grain structure is cellular, or less often – fibrous and layered. The onset combustion temperature of peat-contained carbon is about 340°C. The processes are accompanied by the release of a significant amount of gases, such as CO2, H2O, H2, SO2, NO, and NO2.

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Authors and Affiliations

  1. Ural State Mining University, Ekaterinburg, Russia

    A. M. Amdur, S. A. Fedorov & N. V. Grevtsev

  2. Institute of Metallurgy, Russian Academy of Sciences (RAS), Ural Branch, Yekaterinburg, Russia

    S. A. Fedorov

  3. EVRAZ Nizhny Tagil Metallurgical Complex (NTMK), Nizhny Tagil, Russia

    A. A. Forshev

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  1. A. M. Amdur
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  2. S. A. Fedorov
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  3. A. A. Forshev
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  4. N. V. Grevtsev
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Correspondence to A. M. Amdur.

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Translated from Metallurg, Vol. 67, No. 7, pp. 119–126, July, 2023

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Amdur, A.M., Fedorov, S.A., Forshev, A.A. et al. The Study of Thermal Destruction and Combustion of Coal and Peat as Components of Pulverized Coal Fuel. Metallurgist 67, 1043–1055 (2023). https://doi.org/10.1007/s11015-023-01595-0

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  • DOI: https://doi.org/10.1007/s11015-023-01595-0

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