The Effect of Coal Macerals on the Coal Spontaneous Combustion

There are many factors influence coal spontaneous combustion,such as degree of coalification,coal macerals,pyrite content.In this paper,take Erdos Basin in northern Yanan coal group as the research object,using coal petrography theory,through the coal rock light slice observation,description and statistics,identify the region of coal sample micro litho type,focuses on the analysis of macerals ignition and various macerals pore structure on coal spontaneous combustion;research shows,coal vitrinite content is high,its burning temperature is low,the spontaneous combustion tendency of coal samples is high,the inertinite to silk and semifusinite,the low-temperature oxygen absorption abilityis high,and emit heat,more conducive to the coal spontaneous combustion.