Effect of Structural Nonuniformity on Spontaneous Combustion Liability of Coal

E. V. Ulyanova; O. N. Malinnikova; A. I. DokuchaevaB. N. Pashichev

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Effect of Structural Nonuniformity on Spontaneous Combustion Liability of Coal

机译：Effect of Structural Nonuniformity on Spontaneous Combustion Liability of Coal

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Abstract—The tests of fossil coal sampled in the Pechora Basin determine the chemical oxygen absorption activity U(25), thermal stability of molecular structure (by the TGA method) and microstructural nonuniformity of coal using the complex–entropy analysis. It is found that distinguishing between coals liable and unliable to spontaneous combustion by the criterion U(25) may be wrong. The thermographic analysis and studies of thermograms in the temperature range of 130–250 °С ensures more reliable identification of coal liable to spontaneous combustion The scanning electron microscopy images (1000-fold magnification) show that the propensity to spontaneous combustion of coal depends on the orderliness of the coal microstructure, which is assumed as the key governing factor in this case.

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《Solid fuel chemistry》 |2022年第6期|426-431|共6页
作者
E. V. Ulyanova; O. N. Malinnikova; A. I. DokuchaevaB. N. Pashichev;
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Institute of Comprehensive Exploitation of Mineral Resources Russian Academy of Sciences – ICEMR RAS;

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原文格式 PDF
正文语种英语
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fossil coal; spontaneous combustion; thermogravimetric analysis; digital images of coal surface; entropy; complexity;

Effect of Structural Nonuniformity on Spontaneous Combustion Liability of Coal

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