Empress Catherine II Saint Petersburg Mining University, Saint-Petersburg, Russia:

A. V. Strizhenok, Associate Professor, Candidate of Engineering Sciences, alexeystrizhenok@mail.ru
A. V. Ivanov, Associate Professor, Candidate of Engineering Sciences

China University of Mining and Technology, Xuzhou, China:
Wang Hetang, Professor, PhD

Dust pollution of the atmospheric boundary layer exerts an integrated and long-term effect on all environment components and greatly harms health. Major sources of dust formation and pollution of air with fine-dispersed suspended substances are the open pit mining facilities. In this regard, mining exerts a detrimental effect on the environment both at the stage of active operation and after completion of work. A sole method to reduce dustiness of the surface air at the open pit mining facilities to date is the physicochemical stabilization of surfaces at all production stages—dust suppression. This article presents the experimental results on the efficiency of aqua solutions made of polyvinyl acetate and polyethylene glycol in neutralizing of dusting surfaces at the open pit mining facilities. From the implemented experiments, an empirical relation between the efficiency of a dust suppression solution and the concentration of binders and the aqua solution composition is obtained, which allows calculating an optimized composition for specific open pit mining facilities subject to climatic and weather conditions, dusting fraction composition and implemented processes. The accomplished experiment shows that dust suppression using 0.24% aqueous dispersion of polyvinyl acetate reduces surface dusting by 3.5 times as comparted to the same amount of water, and 0.12% aqueous dispersion of polyvinyl acetate decreases dusting 3.1 times more effectively than water.

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