For a long time,the prevention and control of gas explosion accidents and efficient explosion suppression technology have been the top priority of coal mine safety production.Through dissolution crystallization and mechanical ball milling method to prepare a kaolin-based KHCO3 composite inhibitor,using scanning electron microscopy,laser particle size meter and nitrogen adsorption isotherm tester and other equipment to characterize its surface structure,particle size distribution and specific surface area,etc.,in the 20 L spherical explosion test system in-depth examination of its inhibition effect,and analyze the mechanism of its inhibition,the results show that the kaolin-based composite powder explosion suppression agent inhibitory effect obvious.
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