Coal Spontaneous Combustion Prevention and Cure with Chemical Retarder as well as Analysis on Retarding Mechanism
Abstract：In order to analyze Retarding Mechanism of chemical retarder to prevent coal spontaneous combustion,a solution with 1%～20% sodium persulfate was selected for the chemical retarding treatment of the coal samples and then the coal sample with clean water treatment was taken as the references.The programmed temperature rising oxidized method was applied to the simulation oxidization test of the coal samples and from the macro view,the variation of the coal spontaneous combustion features was analyzed before and after the retarding.The FT-IR was applied to the test of the coal samples and from the micro view,the coal sample variation law of the main active base was analyzed before and after the retarding of the coal samples.The comprehensive analysis showed that at the low temperature stage,the retarder with 5% sodium persulfate would have a good effect.The sodium persulfate retarder could make the active base in the coal to form stable etheric,alkyl and polycarboxylate and could effectively prevent and cure the coal spontaneous combustion.
Keywords：coal spontaneous combustionchemical retarderinfrared spectral analysissodium persulfateretarding mechanism
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)