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At various stages of processing manganese ores, significant volumes of finely dispersed manganese-containing raw materials are formed. Development of technological solutions is required for their use in metallurgical processes. The aim of the study was to develop technologies intended to beneficiate manganesecontaining sludge with the fraction of less than 5 mm and to obtain pellets suitable to be melted into ferromanganese on their basis. The developed beneficiation process flow for manganese sludge includes the ...

This report provides the findings of analysis intended to determine the reasons for the hydrogen sulfide formation in anaerobic conditions of urban sewage systems. The studies have shown that the technogenic content of sulphates in urban networks and the presence of organic components in wastewater lead to the formation and release of hydrogen sulfide into the atmosphere. Various methods of hydrogen sulfide removal from wastewater have been analyzed. The authors of the report have developed a complex alumina-ferro...

The physical and chemical characteristics of sludge from the chrome production in the Donskoy Ore Mining and Processing Plant (DOMPP) owned by TNK Kazchrome JSC have been studied. Researches have been performed to determine the gravity concentration ability of sludge tailings using fractional analysis, concentration tables. It was found that it is required to classify the initial sludge into size classes to obtain high technological parameters, and beneficiation with screw separators is ineffective. New data have ...