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Ash Composition of Lignite

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Abstract

Five lignite samples from Russia’s Itatsky, Munai, Arkharo-Boguchansky, and Kangalassky fields and the Mongolian Baganuur field are characterized on the basis of technical analysis, their elemental composition, calorific value, petrographic composition, and the properties of their mineral component. Experimental data regarding the chemical composition of their ash residues permit empirical calculation of temperatures characterizing ash fusibility, the temperature of normal liquid slag removal, and the temperature of slagging onset. The melting temperatures are found to rise with increase in content of the acidic oxides SiO2 and Al2O3 in the ash residues but to fall with increase in the concentration of Fe2O3, CaO, and MgO.

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ACKNOWLEDGMENTS

This research was conducted on equipment at the Kemerovo Collective-Use Center, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences.

We thank our colleagues at the Institute of Coal Chemistry and Materials Chemistry, Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences for assistance in conducting and interpreting the analyses: V. A. Zubakina (technical analysis), T. G. Vychikova (elemental analysis), and R. Kolmykov (chemical analysis of ash residues).

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  1. Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia

    N. I. Fedorova & Z. R. Ismagilov

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  1. N. I. Fedorova
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  2. Z. R. Ismagilov
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Correspondence to N. I. Fedorova or Z. R. Ismagilov.

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Translated by B. Gilbert

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Fedorova, N.I., Ismagilov, Z.R. Ash Composition of Lignite. Coke Chem. 62, 493–497 (2019). https://doi.org/10.3103/S1068364X19110036

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