Abstract
An analysis of the correlations between the ash content of coal (Adср) and the content of ash-forming elements was carried out. Significant positive pairwise correlations were revealed in the accumulations of SiO2, Al2O3, TiO2 and each of them with ash content Adср (rcr0.05=0.23). In the group Fe2O3, MgO, CaO, a significant positive correlation is observed between the accumulations of only Fe2O3 and MgO, but each of them correlates negatively with Adср. A qualitative analysis of the distributions of petrochemical modules (GM, AM, ZhM, TM) of coal ash from the 2.2-Ulug seam of the Mezhegey deposit was carried out. Hydrolyzate destruction of the mineral matter of coal in 94% of the studied sample (n = 70) is represented by superhydrolysates (GMmin 2.07, GMmax 7.45), normohydrolysates (GMmin 0.86, GMmax 1.95), hypohydrolysates (GMmin 0.56, GMmax 0.84). A combined analysis of correlations between the ash content of coal (Adср) and the contents of ash-forming elements and petrochemical modules of ash made it possible to establish the origin of ash-forming elements - ash-carrier Fe is aquagenic, ash-carriers Al, Ti are allotigenic.
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