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To obtain a chromite concentrate with an acceptable silica content, it is very promising to apply the method of hydrochemical enrichment, which will make it possible to develop waste-free technology for leaching chromite ores and reduce the silica content in chromite concentrates. Before hydrochemical processing, it is advisable to apply the technology of gravity concentration. Modern gravity enrichment technologies make it possible to efficiently produce chromium concentrates from large and medium fractions of ch...

Studies to determine the forms of finding copper and iron in the converter slag of the Balkhash copper production were carried out. The microprobe analyzes of converter slag show that in these samples a significant amount of copper is in a sulphide form, lead in both sulphide and oxide, and in the form of glass, and zinc in oxide. Laboratory studies on the flotation of the original converter slag, as well as after remelting and its slow cooling, were carried out according to a scheme including the basic, control f...

In conditions of modern industrial city production, the main unfavorable factor is industrial dust, the pathogenic effect of which is aggravated by an uncomfortable microclimate. To date, there is no information about the early stages of cytomorphological changes in the cells of the kidney tissue when exposed to unfavorable factors of industrial dust. The aim of the experiment is to assess the qualitative and quantitative composition of renal tissue cells in rats during inhalation priming with industrial polymetal...

The article outlines the results of magnetizing roasting of manganiferous technogenic raw materials investigation, which were conducted to study the process of magnetizing roasting of пїЅTurпїЅ deposit manganiferous sludge. Magnetizing roasting of sludge was carried out, size of 0.045-0.315 mm. During the process of magnetizing roasting, the coal of Shubarkol class -3 + 2 mm was used. According to the analysis, Shubarkul coal has the following composition, %: ash - 4.87; moisture-4.71; volatile-42.02. After roasti...