The aim of the research is the study of the chemical and phase composition of enrichment wastes of manganiferous ore in Ushkatyn-III deposit and the synthesis of new materials by mechanochemical activation and subsequent heat treatment of the mechanical activation products. The use of XFA, infrared spectroscopy and electron probe microanalysis showed that the main phase is spar CaCO3 (65 % wt). A number of silicophosphate materials were obtained based on these wastes by mechanochemical method in the two-phase system “enrichment wastes – phosphoric acid” with subsequent heat treatment of the mechanical activation products. In addition, it is shown that their solubility has an extreme character depending on the annealing temperature with a minimum at 600°C. These products can be used as fertilizer materials of prolonged action, as well as metal corrosion inhibitors for water environments.

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