The significance of experimental research on flame spectra of methane-coal dust explosions is explained. Weak explosions of methane-coal dust-air mixtures were carried out in a large-scale tube of 200cm x 2900cm with one end open, and the absolute radiation intensities as .well" as their variation under different conditions for characteristic wavelengths of 0.8875, 1.000, 1.505, 2.EO1, and 4.346gm were obtained by using small angle of view and a multichannel detector developed by us. The experimental results are discussed and compared with those published abroad? Based on the absolute radiation intensity measured at wavelength 4? and the selected mackbody radiation model, the temperature of explosion flame was determined. The results obtained are not only of great practical importance to the industry but may also be used in the study of flame and chemical kinetics.
; Liu YZ; Liao JQ; Xia ZZ; Li SZ
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