Thermal stability assessment of anti-explosive ammonium nitrate

Lijin Shen and Xuguang Wang Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, ChinaBeijing General Research Institute of Mining and Metallurgy, Beijing 100044, China

摘 要：<正>The explosivity experiment of anti-explosive ammonium nitrate （AEAN） shows that the explosive characteristic of AEAN is eliminated. The adiabatic decompositions of ammonium nitrate and AEAN were investigated with an accelerating rate calorimeter （ARC）. The curves of thermal decomposition temperature and pressure versus time, self-heating rate and pressure versus temperature for two systems were obtained. The kinetic parameters such as apparent activation energy and pre-exponential factor were calculated. The safety of AEAN was analyzed. It was indicated that AEAN has a higher thermal stability than AN. At the same time, it can be shown that the elimination of its explosive characteristic is due to the improvement on the thermal stability of AEAN.

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