Manufacturing and Application of Complex Ferroalloys


The tightening of requirements for the quality of steel, a change in the composition of raw materials requires the release of more efficient ferroalloys of the new generation, suitable for progressive steel production processes. Such products include complex ferroalloys containing, in addition to iron, two or more functional elements. Complex ferroalloys should be created in the most favorable combination of components, contributing to the necessary effective impact on the quality of the metal being processed, with a high degree of assimilation of useful elements in it. Changes in the characteristics of complex ferroalloy, affecting the assimilation of target (basic) elements, should be carried out by regulating the composition and ratio of elements that can be included in almost any ferroalloy, since they are part of all steels and cast irons or they’re required by the conditions of their smelting. Firstly, these elements should include silicon and manganese. Silicon can reduce the melting temperature, density, and melting time of ferroalloy in the liquid metal. For example, the addition of 1% silicon to low-carbon ferrochrome can reduce the melting point of the alloy by 8–9 degrees. Compositions of new complex ferroalloys of systems Fe-Si-Ca-Ba, Fe-Si-B, Fe-Si-Al-Nb, Fe-Si-Mn-V have been successfully tested and introduced into production.

Keywords: metallurgy, ferroalloy, melting, density, physical and chemical properties, steel

[1] Pariser H.H., Backeberg N.R., Masson O.C.M. et al. (2018). Changing nickel and chromium stainless steel markets. Market review by Heinz Pariser, in Infacon XV: International Ferro-Alloys Congress, Edited by R.T. Jones & P. den Hoed.

[2] Cobb H.H. (2010). The History of Stainless Steels. ASM International. pp. 17-24.

[3] Krüger P., Silva C.A., Batista Vieira C. et al. (2010). Relevant aspects related to production of iron nickel alloys (pig iron containing nickel) in mini blast furnaces, in Proceedings of The Twelfth International Ferroalloy Congress. V. I. Helsinki, Finland: Outotec Oyj.

[4] Zhuchkov V.I., Zayakin O.V. and Leontyev L.I. (2008). Main directions of processing of poor native chrome ore raw materials. Electrometallurgy, №5, pp. 18-21.

[5] Stroganov, A.I. (1980). Requirements for ferroalloys for deoxidation and alloying in Ferroalloy production: Collection of the Siberian Metallurgical Institute, 5-24. Novokuznetsk: Publishing Kuz. PI.

[6] Zhuchkov V.I., Zayakin O.V. and Mal’tsev Yu.B. (2001). Study of melting temperatures and density of ferroalloys containing nickel. Melts. № 1. pp. 7-9.

[7] Ringdalen E., Ostrovski O. and Gaal S. (2010). Ore properties in melting and reduction reactions in silicomanganese production in Proceedings of The Twelfth International Ferroalloy Congress. V. I. Helsinki, Finland: Outotec Oyj.

[8] Druinsky M.I. and Zhuchkov V.I. (1988). Production of complex Ferroalloys from mineral raw materials of Kazakhstan. Alma-Ata: Science.

[9] Boyarko G.Yu. and Khatkov V.Yu. (2018). Commodity Flows of Ferroalloys in Russia. Ferrous metals. № 3, pp. 60-63.

[10] Zhuchkov V.I., Andreev N.A., Zayakin O.V. et al. (2013). Composition and performance characteristics of chrome ferroalloys. Steel. №5, pp. 36-37.

[11] Zhuchkov V.I., Andreev N.A. and Zayakin O.V. (2011). Study of the density of complex chromium-containing ferroalloys in Proceedings of the VI International Scientific and Practical Conference. Temirtau.

[12] Zayko V.P., Zhuchkov V.I., Drobyshevsky P.A. et al. (2005). Technology of tungstencontaining ferroalloys. Ekaterinburg: Ural Branch of RAS.

[13] Zhuchkov V.I., Sheshukov O.Yu. and Lozovaya E.Yu. (2005). The study of the physicochemical characteristics of ferroalloys and the design of their rational composition in Proceedings of conf. ”Physical chemistry and technology in metallurgy”. Ekaterinburg: Ural Branch of RAS.

[14] Zhuchkov V.I., Zayakin O.V., Leontyev L.I. et al. (2017) Physico-chemical characteristics of the preparation and use of complex boron-containing ferroalloys. University news. Ferrous metallurgy, Vol. 60, № 5, pp. 348-354.