There is an acute shortage of special complex ferroalloys with particularly low carbon content in the world. The Republic of Kazakhstan has the necessary reserves of mineral raw materials quite suitable for the production of complex alloys based on aluminum, silicon, manganese and chromium to meet the needs of ferrous metallurgy for the production of a wide range of steel. Moreover, these metals are smelted from second-class coal (i.e., with an ash content of more than 50%) with the addition of quartzite (FeSiAl), siliceous manganese ore (FeSiAlMn) and chrome ore (FeSiAlCr) to the charge. Along with this, alloys can be used as a metal reducing agent. An important factor in the smelting of refined varieties of ferromanganese and ferrochrome using these alloys is a radical change in the composition of the slag of these industries. The main thing is that in this case, the waste slag from the above-mentioned industries will not crumble, which is extremely important from an environmental point of view. The work is fundamental in nature. The tool for completing the tasks and achieving the goal of the project will be the long-term results of research into the behavior of components of metallurgical melts using HSC chemistry and FactSage software.

To establish optimal compositions of silicon-aluminum ligatures based on manganese and chromium by thermodynamic-diagrammatic analysis

The results of the study are promising from the point of view of improving the technological process of steel deoxidation. In this case, the most optimal chemical composition of manganese-containing and chromium-containing ores will be proposed. As a result of the study of the complex deoxidizer, a technological process for producing a complex deoxidizer will be proposed using substandard manganese ores and high-ash coals, not used for industrial purposes, as charge materials. The social and economic effect of the project will be significant: the studied compositions of iron-silicon-aluminum alloys with chromium and manganese additives are primarily intended for metallothermic production of refined grades of ferromanganese and ferrochrome. The use of these alloys instead of traditional ferrosilicomanganese and ferrosilicochrome makes it possible to reduce the use of lime and halve the slag ratio (Shl/Me), reduce energy consumption by 25–30%, and also obtain stable, non-scattering waste slag. The theoretical results obtained will make it possible to purposefully obtain alloy compositions with the optimal composition and melting point of individual phases in relation to the smelting of refined grades of ferrochrome and ferromanganese. The results of scientific research will be disseminated at international conferences, symposia, various international technology exhibitions, by publishing articles in peer-reviewed scientific publications in the scientific direction of the project, included in the 1st (first), 2nd (second) quartiles in the Web of Science database and (or) having percentile according to CiteScore in the Scopus database is at least 50 (fifty).

The results of the study are promising in terms of improving the technological process of deoxidation of steels. At the same time, the most optimal chemical composition of manganese-containing and chromium-containing ores will be proposed. As a result of the study of the complex deoxidizer, a technological process for obtaining a complex deoxidizer will be proposed involving substandard manganese ores and high-ash coals that are not used for industrial purposes as charge materials. The social and economic effect of the project implementation will be significant: the studied compositions of iron-silicon-aluminum alloys with chromium and manganese additives are primarily aimed at metal thermal production of refined grades of ferromanganese and ferrochrome. The use of these alloys instead of traditional ferrosilicon manganese and ferrosilicochrome makes it possible to reduce the use of lime and halve the slag multiplicity (Shl/Iu), reduce energy consumption by 25-30%, and obtain stable, non-crumbling waste slags. The theoretical results obtained will make it possible to purposefully obtain alloy compositions with optimal composition and melting point of individual phases in relation to the smelting of refined grades of ferrochrome and ferromanganese. The results of scientific research will be distributed at international conferences, symposiums, various international exhibitions of technology, publications of articles in peer-reviewed scientific journals in the scientific field of the project, included in the 1st (first), 2nd (second) quartiles in the Web of Science database and (or) having a CiteScore percentile in the Scopus database of at least 50 (fifty).