| Abstract Scope |
In this paper, the physicochemical structure of hot melt products was characterized by industrial analysis, elemental analysis, infrared spectroscopy, coal and rock composition, Raman and other means.Compared with raw coal, the ash content of hot melt coal is significantly reduced, and the ash content in some hot melt coal is negligible; The volatile content of hot melt coal increased, and the small molecular weight substances increased. reduction in fixed carbon content; The content of C element in hot melt coal is higher than that in raw coal, especially for low-rank coal XB and ZS. The H/C ratio of KL, GD and ZS was greater than that of the raw coal, while the O/C of KL, XB and ZS was reduced. |