COMBUSTION PROCESSES OF ALUMINUM POWDER IN PYROTECHNIC MIXTURES

Anatolii BELIKOV; Ievgenii SHKOLIAR; Roman MOTRICHUK; Maryna TOMENKO; Valentin DYVEN; Serhii HONCHAR; Serhii HONCHAR

Anatolii BELIKOV Prydniprovska State Academy of Civil Engineering and Architecture
Ievgenii SHKOLIAR Cherkasy institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine
Roman MOTRICHUK The Main Department of State Emergency Service of Ukraine in Cherkasy Region
Maryna TOMENKO Cherkasy institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine
Valentin DYVEN Cherkasy institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine
Serhii HONCHAR Cherkasy institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine
Serhii HONCHAR Cherkasy institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine

Keywords: pyrotechnic wares, nitrate-aluminum mixtures, processes of burning of mixtures

Abstract

This paper examines the problem of thermal stability of pyrotechnic mixtures used in various pyrotechnic products. The main attention is paid to the analysis of the influence of high temperatures and external pressures on the burning rate and stability limits of these mixtures. It has been established that an increase in temperature and external pressure can lead to unstable combustion, creating a risk of explosion. The results of the study indicate the concentration limits of combustion, within which the process remains stable, as well as the change in the combustion speed depending on the temperature, the content of the oxidizer, the size of the metal fuel particles, and the content of organic additives. Further research is planned to focus on theoretical analysis and modeling of the combustion process in order to determine safe parameters for pyrotechnic mixtures that will prevent explosive modes.

In addition, the research emphasizes the importance of understanding the influence of technological parameters on the fire safety of pyrotechnic mixtures. It has been established that optimizing the composition of mixtures can significantly reduce the risk of unstable combustion and explosion. In particular, studies show that the correct choice of metal fuel particle size and concentration of organic additives can provide more stable combustion. Attention is also focused on the need to further study the influence of external factors, such as temperature and pressure, on the safety of pyrotechnic mixtures. This work makes an important contribution to the development of safe practices in the pyrotechnic industry and contributes to safety in the use of pyrotechnic products.