Abstract
Geotechnical properties and material composition of loparite ore dressing tailings have been investigated. It was established that already at the stage of waste storage, heterogeneity of the material composition and contents of valuable components is formed. The average content of loparite and eudialyte in the refinement tailings is 1.1 and 0.5%, respectively. The effective specific activity of natural radionuclides 226Ra, 232Th and 40K and investigated samples is in range values 646±21 – 1300±24 Bk/kg. When leaching samples of tailings in distilled water, the concentration of fluorineions in the water extract significantly exceeds the MPC of water bodies for fishery and household purposes. By phytotesting it was found that water extracts of tailings and its dilution – enrichment do not have a significant toxic effect on the growths of higher plants.
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