Authors: A.N. Zaostrovsky, A.V. Petrushina, D.R. Nurmukhametov

Title of the article: Initiation of explosion components on the surface of coal dust

Year: 2025, Issue: 4, Pages: 64-70

Branch of knowledge: 2.6.12. Chemical technology of fuel and high-energy substances

Index UDK: 662.741

DOI: 10.26730/1999-4125-2025-4-64-70

Abstract: The physicochemical features of the explosion components are considered. It has been established that methane, hydrogen, oxygen and water vapor, being sorbed on the surface of coal dust, form ion-radical forms that contribute to the occurrence of a number of high-speed chain reactions; mineral components of coals and petrographic ingredients of the fusinite group, having a high specific surface area, act as catalysts. Explosion and spontaneous combustion are preceded by latent activation of gaseous components, which leads them to an excited state due to sorption on the surface of coals and mineral components. The latter circumstance is the basis of reactions in heterogeneous catalysis and, to a certain extent, relates to explosions of methane and coal dust. The catalytic effect of many transition metal compounds in redox reactions depends on the activation of oxygen in its complexes. Complexation changes the nature of the oxygen molecule, bringing it closer to the excited state, and therefore the reactivity of oxygen increases significantly. The interaction of hydrogen with oxygen proceeds in the form of an extensive chain reaction and is highly exothermic. The active role of moisture in the processes of oxidation and spontaneous combustion of coals precedes the explosion of methane and coal dust. The explosion of methane-coal dust is the end result of the preliminary activation of its components, which requires time and certain mining and technical conditions, including those related to the violation of safe working conditions.

Key words: coal petrographic analysis of coal vitrinite reflectance index reflectogram Balakhonskaya series Kolchuginskaya series

Receiving date: 18.04.2025

Approval date: 22.06.2025

Publication date: 28.08.2025

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