The volatile materials released during the heating of solid fuels ignite at relatively low temperatures releasing heat function of their quantity and quality. This heat raises the temperature of the solid residue creating the conditions for his ignition and burning. In the case of burning of the pulverized coal the phenomenon of production. ignition and burning of volatile materials a... https://www.ealisboa.com/top-offer-Birkenstock-Arizona-Eva-Beetroot-Purple-best-save/