Kuang KQ, Huang X, Liao GX (2008) A comparison between superfine magnesium hydroxide powders and commercial dry powders on fire suppression effectiveness. Process Safety and Environmental Protection 86(B3), 182-188. [In English]

Web link: http://dx.doi.org/10.1016/j.psep.2007.11.002

Keywords:

superfine and dry powder, fire suppression effectiveness, particle size, thermal gravity analysis

Abstract: The effectiveness of superfine magnesium hydroxide powders and commercial dry powder in fire suppression were compared in a laboratory-scale, immovable fire suppression apparatus. The investigation focused on their suppression effectiveness under various pressures. It likewise studied the relationship between the powders' surface structures and their effectiveness on fire suppression. The microcosmic structure of the powders was observed by scanning electron microscope (SEM), while the Thermal Gravity Analysis (TGA) technique was used to analyze the thermal behavior of the superfine magnesium hydroxide powders. By analyzing the results, it could be concluded that the pressure, the particle size, and the microcosmic structure of the powders' surface mainly decide the capability of the powders to extinguish the fire. Comparing this with commercial dry powders, superfine magnesium hydroxide powders extinguished the fire in less than 10s. (c) 2007 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.