Моделирование взаимодействия тонкой фракции хвостов обогащения лопаритовых руд с почвенными водами

The results of modeling of the interaction of the fine fraction of loparite ore mill tailings (-0.071 mm) with solutions simulating soil waters, with different contents of organic carbon, are presented. It was found that the introduction of dissolved organic matter intensifies the process of transition of rare and non-ferrous metals into soluble forms. At the same time, the concentrations of pollutants in solutions after five hours of interaction exceed the maximum permissible concentrations for the objects of commercial fishing importance several times. Phytotesting method determined that, in contrast to the general sample of mill tailings, the water extract of the fine fraction has a toxic effect on the growth and development of higher plants. The research results indicate the environmental hazard of the fine fraction of the loparite ore mill tailings due to the ingress of mineral particles into the soil and their interaction with soil waters.