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Crushing Properties of Coal 2. Binary Coal Blends

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Abstract

The Hardgrove grindability index HGI of binary coal blends is determined. The blends contain coal of different metamorphic development in different proportions. Mathematical formulas permit prediction of HGI for a coal blend on the basis of the grinding indices for its individual components. For a binary coal blend with separate preparation of the components, HGI is found to exceed the calculated value (by 3.6, on average). For a blend with integrated preparation of the components, it is less than the calculated value (by 3.6, on average). Crushing of the whole batch is found to require more energy than differential crushing of the batch components.

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Authors and Affiliations

  1. Kharkov Polytechnic Institute, Kharkov, Ukraine

    D. V. Miroshnichenko

  2. Ukrainian Coal-Chemistry Institute, Kharkov, Ukraine

    V. V. Koval

  3. MK Azovstal, Mariupol, Ukraine

    S. V. Fatenko

  4. Donets Basin State Pedagogical University, Slavyansk, Ukraine

    Y. V. Nikolaichuk

Authors
  1. D. V. Miroshnichenko
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  2. V. V. Koval
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  3. S. V. Fatenko
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  4. Y. V. Nikolaichuk
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Corresponding authors

Correspondence to D. V. Miroshnichenko, V. V. Koval, S. V. Fatenko or Y. V. Nikolaichuk.

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Translated by B. Gilbert

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Miroshnichenko, D.V., Koval, V.V., Fatenko, S.V. et al. Crushing Properties of Coal 2. Binary Coal Blends. Coke Chem. 63, 513–518 (2020). https://doi.org/10.3103/S1068364X20110046

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  • DOI: https://doi.org/10.3103/S1068364X20110046

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