Application of russian ore raw materials to ferroalloys production

Жучков, В. И.; Леонтьев, Л. И.; Zayakin, O. V.

doi:10.17073/0368-0797-2020-3-4-211-217

Cited by 3 publications

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References 3 publications

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“…Важным преимуществом комплексных ферросплавов является возможность их получения из рудного сырья менее высокого качества, чем для выплавки стандарт ных сплавов, например из некондиционных материалов, отходов производства, бедных и комплексных руд и концентратов [6,20,21]. Это связано с тем, что в составе КФ находятся меньшие концентрации ведущих элементов по сравнению с со ставом стандартных марок ферросплавов (10 - 40, а не 60 - 90 %).…”

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Development of composition and process of obtaining multicomponent ferroalloys

Жучков

Заякин

2020

Izv. vysš. učebn. zaved., Čern. metall.

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The main product of ferroalloy plants is standard ferroalloys. They often do not have all the necessary service characteristics and are not very suitable for metal processing in a ladle. The developing progressive technology of steelmaking is forced to adapt to the existing range of ferroalloys, the standards for which have not been updated for 50 years or more. In addition, in recent years, the sources and markets of ferroalloy raw materials have changed, and their quality and content of leading elements have decreased. This makes it difficult or excludes the possibility of obtaining ferroalloys according to existing standards. In this regard, the production of more efficient ferroalloys of a new generation is required, suitable for progressive processes in the developing areas of ferrous and non-ferrous metallurgy 795 and smelted from non-traditional types of domestic ore raw materials. These include complex or multicomponent ferroalloys containing, in addition to iron, two or more functional elements. Complex ferroalloys should be created in the most favorable combinations of component. It contributes to the necessary effective impact on the iron-carbon melt with a high degree of assimilation of useful elements in it. The creation of scientific foundations for the formation of new compositions of multicomponent ferroalloys with high consumer properties, and the development of physicochemical processes for obtaining these alloys from unconventional ore raw materials contributes to solving the problems of developing compositions of effective new generation ferroalloys and expanding the ore base of ferroalloy production. When using the developed method of designing the composition of complex ferroalloys using unconventional raw materials, melting technologies were developed; various alloys of the systems were obtained and applied on a laboratory and industrial scale: Fe – Si – Cr, Fe – Si – B, Fe – Si – Ba – Ca, Fe – Si – Al – Nb, Fe – Si – Ca – Mg, Fe – Si – V – Ca – Mn, Fe – Si – Al.

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Development of composition and process of obtaining multicomponent ferroalloys

Жучков

Заякин

2020

Izv. vysš. učebn. zaved., Čern. metall.

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Influence of composition and cooling rate of alumocalcium slag on its crumblability

Lebedev

Shuiskaya

2022

Izv. vysš. učebn. zaved., Čern. metall.

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The main components of metallurgical slags are iron compounds, which are extracted by reduction smelting. There are several types of this process with obtaining various products based on iron and slags of various compositions (aluminum-calcium self-disintegrating), etc. The mode of smelting and cooling of alumocalcium slag, formed during melting in the furnace, should ensure the most complete spontaneous crumbling of it, as well as high rates of extraction of REM from it. Synthetic slags similar in phase composition to industrial samples after smelting of iron-containing ores were selected for the experiments. The simulated samples correspond to the region of primary crystallization of bicalcium silicate on the triple state diagram of CaO – SiO2 – Al2O3 system. The slag after crumbling was subjected to a sieve analysis using a mechanical sieve. In the experiments, slags with a silicon module k = 2.0 were used, which actively crumbled during their cooling. With an increase in the silicon module, the crumbling deteriorates. It was established that it is impossible to precisely limit the areas of compositions of crumbling slags at certain cooling rates. The conducted studies showed that the crumblability of slags improves as it approaches the center of the bicalcium silicate region. The composition of slags close to composition of the intersection points of the lines 2CaO·SiO2 – 2CaO·Al2O3 and 2CaO·SiO2 – 12CaO·7Al2O3 with the lines of the permanent silicon module granulometric composition almost does not depend on the cooling rate. The temperature mode from smelting to cooling affects the slags crumblability. The most promising are slags with a silicon module in the range of 2.85 – 3.00, close to the phase triangle 12CaO·7Al2O3 – 2CaO·SiO2 – 2CaO·Al2O3 .

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Current state of the ferroalloy industry in Russia and prospects for its development in the Asian part of the country

Petrov

2023

Černaâ metallurgiâ. Bûlletenʹ naučno-tehničeskoj informacii

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Ferrous metallurgy, as a supplier of metal products and a major consumer of energy and engineering products, is an industry that can act as one of the source for Asian Russia complex development impulse. The different ferroalloys and ligatures have used in the process of steelmaking to ensure the required range of steel products. Therefore, it is necessary to conduct an audit of the current state of the Russian ferroalloy industry and its Asian part in order to identify possible growth points of the industry to ensure the development of ferrous metallurgy and sustainable socio-economic growth of the Asian Russian space. In the article it is shown that Asian part is one of the ferroalloy industry centers in Russia, which, as in the industry as a whole, has a high dependence on imported supplies of ore which neces-sary for ferroalloys production. Its own raw materials provided only for production of silicon alloys. In the issue of oth-er alloys and ligatures production, the existing conservative approach in the organization of the ferroalloy industry does not allow the use of poor domestic ore in production. The growth in demand for silicon alloys can be achieved by reori-enting export flows to domestic consumption but the most important alloys for the development of Asian Russia based on manganese, chromium, vanadium and niobium may have difficulties in providing ferrous metallurgy with them. The solutions of such problems are implementation of new technologies for raw materials processing, development of non-standard types of alloys, introduction of technogenic waste processing. This will contribute to the realization of Russia’s desire for import substitution, including the provision of metallurgy with its own raw materials.

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Application of russian ore raw materials to ferroalloys production

Cited by 3 publications

References 3 publications

Development of composition and process of obtaining multicomponent ferroalloys

Development of composition and process of obtaining multicomponent ferroalloys

Influence of composition and cooling rate of alumocalcium slag on its crumblability

Current state of the ferroalloy industry in Russia and prospects for its development in the Asian part of the country

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