Mechanistic Study on the Impact of the Occurrence of ...
· Spontaneous combustion of lowrank coal, especially alkalirich coal, is a key issue that determines the safety of storage and transportation. To understand the role of different forms of Alkali and alkaline earth metals (AAEMs) on coal spontaneous combustion, AAEMs in raw coal were sequentially eluted by water, ammonium acetate (NH 4 OAc) and hydrochloric acid (HCl) .