Combustion Study of Gas-Generating Compositions with Carbon Powder Additives

In blasting in dense urban areas and piece stone mining, the issue of organizing gentle destruction modes arises, which requires the use of pyrotechnic compositions operating in the deflagration mode. In such compositions, ammonium perchlorate, ammonium nitrate, and other nitrates are used as oxidizing agents. Magnesium is often used as fuel. In this paper, the combustion of a three-component mixture of sodium nitrate, magnesium, and carbon was studied. The latter was obtained by carbonizing a walnut shell or grinding gas mask adsorbents. The thermodynamic calculations of combustion were performed, and the combustion characteristics of the NaNO3/Mg/C mixture with a component ratio of 60/20/20 were measured.