In order to understand and control the foaming rate of ammonium nitrate-sodium nitrite reaction in emulsion explosives, reaction mechanism and kinetics in this reaction process were studied by weight loss and gas measurement methods. The results show that acid could be used as catalyst to accelerate the whole reaction process. Under the condition of acid as catalyst, the reaction rate increases with the increase of experimental temperature, and the reaction conforms to Arrhenius model. The activation energy is 57.87 kJ/mol and the pre-exponential factor is 1.48×106mol/L·s. By comparing the experimental and calculated values, the reaction kinetics equation is reasonable. Therefore, it provides a theoretical benchmark for the control of chemical sensitization reaction rate in practical production.
LIU Zhenyu①;XIE Qiang①;LIU Wei①;WANG Zeqing①;CHEN Houhe①;ZHANG Yaoxuan②.
Study on Foaming Kinetics of Ammonium Nitrate-Sodium Nitrite in Emulsion Explosive. Explosive Materials. 2020, 49(3): 10-15 https://doi.org/10.3969/j.issn.1001-8352.2020.03.002