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The paper presents the results of a comprehensive study of the physical and particle-size characteristics of halite salt dust, which is widely used in industry and traditionally not regarded as a hazardous environmental pollutant. Nevertheless, under large-scale production conditions, crushing, handling, storage, and transportation processes are accompanied by additional crystal fragmentation, which may lead to the formation of fine fractions and dust aerosols. Under certain aerodynamic conditions, such particles are capable of dispersing beyond industrial sites, thereby contributing to the problem of industrial air pollution. The aim of the study was to provide a quantitative assessment of the dust-forming tendency of halite salt and to determine the characteristics of the resulting dust fraction. The research included an analysis of the particle size (granulometric) distribution of both the initial material and the generated dust, experimental investigations of particle entrainment by airflow, determination of dust particle settling velocities, and measurement of their true density using the pycnometric method. The obtained data make it possible to assess the potential migration capacity of the fine fraction and its contribution to aerosol pollution under large-scale production conditions. It is shown that even with a relatively small mass fraction of fine particles, the total emission volumes may be significant due to high production capacities. The results of the study can be used in the development of dust suppression measures, optimization of technological regimes, improvement of dust collection systems, and in the environmental assessment of enterprises involved in the processing and storage of halite salt.
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Azarov V.N., Sergina N.M., Bakin N.S., Simakov V.S. Study of the aerodynamic characteristics and dispersed composition of halite salt dust. Construction Materials and Products. 2026. 9 (3). 4. https://doi.org/10.58224/2618-7183-2026-9-3-4