A Thermogravimetric Analysis Study of the Kuzbass Coals of Different Ranks

摘要

The coals of different ranks from the Kuznetsk Coal Basin were studied by thermogravimetric analysis in inert and oxidizing atmospheres. Correlations between thermal decomposition characteristics [maximum decomposition temperatures (T (max), A degrees C), maximum rates of decomposition (Vmax, %/min), and sample weight losses in different temperature ranges (Delta m, %)] and proximate analysis [yields of volatile substances (Vdaf, %)] and petrographic analysis [vitrinite reflectance (R (o))] data and NMR-spectroscopic data [aromaticity factor ( fa)] as the characteristics of the degree of maturity of the test coals were established.