Composition and Structure of the Mineral and Combustion Residuesof High-Ash Coal

摘要

Elemental composition and infrared spectra of mineral and cindery residuals of high-ash coal coming from a deposit of northern Kazakhstan is under consideration. New concepts about the structural transformations in mineral substance of coal during combustion are presented. The combustion, as shown, is leading to changes of elemental composition and distortions of symmetry of SiO_4-tetrahedrons, which form a basis of silicates.