Abstract
The aim of the study is to reduce the technogenic load on the environment from acidic wastes of titanium production by developing a technology for utilizing iron sulphate to obtain ferum paste (II, III) of oxides-hydroxides and ammonium sulfate solution as target products. The accumulation of such large-tonnage waste as iron vitriol is one of the environmental problems in the regions where such enterprises are located.Iron sulphate is 24 % free sulfuric acid. Thanks to biogeochemical processes, solutions of sulfuric acid, penetrating through groundwater, reach large areas of land. As a result, the structure of the soil changes. Contamination occurs with titanium and chromium ions, which are part of the waste. As a result of favorable meteorological conditions, it spreads in the form of acid rain over long distances and damages ecosystems. This article is devoted to the problem of formation, accumulation and disposal of chemical waste. A radical solution for the utilization of accumulated iron sulphate has been proposed. The main physical and chemical processes of the developed technology are revealed. The processes of ammonolysis, oxidation and formation of a suspension, as well as filtration of the precipitate were studied. It was found that the resulting precipitate is magnetite. Obtaining this magnetite allows it to be used in the steel industry.
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