Experimental Study on Spontaneous Combustion Characteristics of Different Degrees of Metamorphic Coal
LIU Yushuai
Abstract：The oxidation heating experiment of coal with different degrees of metamorphism was carried out by means of programmed heating experiment device, the relationship between critical temperature change, CO, CO2 and CH4 concentration change in the experimental process were analyzed. The results show that: the critical temperature increases with the increase of metamorphic coal of 64.79 ℃(long flame coal), 69.86 ℃(non-caking coal) and 71.23 ℃(gas coal); the concentration of CO, CO2 and CH4 decreases with the increase of the metamorphic degree. To a certain extent, the tendency of spontaneous combustion of coal decreases with the increase of coal metamorphism.
Keywords：coal metamorphic gradetemperature programmingcritical temperaturemark gasspontaneous combustion characteristic
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 10-13,18 )