关键词: 临界温度, 交叉点温度测试, 煤自燃

Abstract: In order to test the critical temperature of coal quickly and then do well the work of fire prevention and control guidance, a new critical temperature test method based on cross-point temperature test is proposed. Using simulation experiment system of coal oxidation made by China University of Mining and Technology ,experiments are operated on the selected typical coal samples and then the data is calculated，the measured critical temperature is basically consistent with the adiabatic oxidation method’s. It takes a very short time of four hours of the whole test time. at last it proves using cross-point temperature to get the critical temperature for coal spontaneous combustion is a viable, convenient and efficient method.

Key words: critical temperature, cross-point temperature test, spontaneous combustion of coal