Production and use of complex ferroalloys in metallurgy

Tolymbekov, M. Zh.; Akhmetov, A. B.; Baisanov, S. O.; Ogurtsov, Evgeny; Zhiembaeva, D. M.

doi:10.3103/s0967091209050131

Cited by 8 publications

(5 citation statements)

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“…Therefore, many researchers have paid more attention to these in recent years. [154,155] This development is driven by the wish to improve the complex ferroalloys quality and to decrease the production cost. The combination of several elements usually decreases their activity (better extraction of elements) and melting temperature (formation of eutectics, etc.).…”

Section: Complex Alloysmentioning

confidence: 99%

“…They have been adopted industrially as reduction agents in a wide-range of killed and low-alloy steels. [155] It was reported that the use of FeSiAl alloys greatly reduced the amount of oxide inclusions as well as their size in comparison to deoxidation using FeSi65 and Al. Moreover, the strength and plastic properties of steel were improved because oxysulfide inclusions were present in a globular form by the formation of low-melting phases.…”

Section: Complex Alloysmentioning

confidence: 99%

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Non-metallic Inclusions in Different Ferroalloys and Their Effect on the Steel Quality: A Review

Wang

Karasev

Park

et al. 2021

Metall Mater Trans B

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Ferroalloys have become increasingly important due to their indispensable role in steelmaking. In addition, the demand for improved steel qualities has increased considerably, which in turn highlights the quality of ferroalloys. This is due to the fact that the impurities in ferroalloys directly and significantly influence the quality of steel products. To gain a better understanding of the main trace elements and inclusions in ferroalloys (such as FeSi, FeMn, SiMn, FeTi, FeCr, FeMo, FeNb, FeV, FeB, some complex ferroalloys) and their behaviours in steel melt after the additions of these ferroalloys, information from a large number of previous results on this topic was extensively reviewed in this work. The applications of different ferroalloys and their production trends were discussed. In addition, the effects of some trace element impurities from ferroalloys on the inclusion characteristics in steel were also discussed. The possible harmful inclusions in different ferroalloys were identified. Overall, the results showed that the inclusions present in ferroalloys had the following influence on the final steel cleanliness: (1) MnO, MnS and MnO–SiO2–MnS inclusions from FeMn and SiMn alloys have a temporary influence on the steel quality; (2) the effect of large size SiO2 inclusions (up to 200 μm) in FeSi and FeMo alloys on the steel cleanliness is not fully understood. The effect of Al, Ca contents should be considered before the addition of FeSi alloys. In addition, Al2O3 inclusions and relatively high Al content are commonly found in FeTi, FeNb and FeV alloys due to their production process. This information should be paid more attention to when these ferroalloys are added to steel; (3) except for the existing inclusions in these alloys, the Ti-rich, Nb-rich, V-rich carbides and nitrides, which have important effects on the steel properties also should be studied further; and (4) specific alloys containing REM oxides, Cr–C–N, Cr–Mn–O, Al2O3, Al–Ti–O, TiS and Ti(C, N) have not been studied enough to enable a judgement on their influence on the steel cleanliness. Finally, some suggestions were given for further studies for the development of ferroalloy productions.

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Section: Complex Alloysmentioning

confidence: 99%

Section: Complex Alloysmentioning

confidence: 99%

Non-metallic Inclusions in Different Ferroalloys and Their Effect on the Steel Quality: A Review

Wang

Karasev

Park

et al. 2021

Metall Mater Trans B

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“…Chaojie ZHANG, 1) * Yanping BAO, 2) Dechi TANG, 1) Chenxi JI, 1) Leichuan WANG, 3) Yang CUI 1) and Haibo LI 1) 1) Research Institute of Technology, Shougang Group Co., Ltd The reduction of ferroalloy consumption used in the steel making is an important approach to high-performance and low-cost steel manufacture. In this paper, the effect of size of ferrotitanium on the yield in the refining of interstitial free steel by RH de-gasser was investigated.…”

Section: Effect Of Size Of Ferrotitanium On the Melting Behavior And mentioning

confidence: 99%

“…Ferroalloys are necessary raw materials in the steel making process, [1][2][3][4] which are used for deoxidation and alloying. Therefore, the cost of ferroalloys in the steel making is significant.…”

Section: Introductionmentioning

confidence: 99%

Effect of Size of Ferrotitanium on the Melting Behavior and the Yield in the Refining of Interstitial Free Steel by RH De-gasser

et al. 2018

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“…Ferroalloys are widely used in steelmaking [1][2][3][4], especially in deoxidation and alloying process. In China, the annual consumption of ferroalloys is about 40 million tons, of which more than 90% is consumed in the steelmaking process.…”

Section: Introductionmentioning

confidence: 99%

Loss mechanism of micro-carbon ferromanganese during RH refining

Zhang

Bao

Zhang

et al. 2021

Ironmaking & Steelmaking

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It is of great significance to improve the yield of ferroalloy for steelmaking to reduce cost and save energy. In this paper a kind of loss mechanism of micro-carbon ferromanganese which has micro content of carbon during RH refining of interstitial free steel was investigated. The flow field of argon gas in the RH degassing vessel was investigated through numerical simulation. Through force analysis and particle tracking of the micro-carbon ferromanganese, it was found that microcarbon ferromanganese with size smaller than the critical value of 1.01 millimeters has a large probability to be carried away into the RH vacuum pipeline. The micro-carbon ferromanganese of small particle was easily lost into the vacuum pipe by the upward flow of argon gas. Industrial experiment was conducted and a novel mechanism was confirmed that increasing the vacuum pressure during addition of the micro-carbon ferromanganese could improve the yield greatly.

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Production and use of complex ferroalloys in metallurgy

Cited by 8 publications

References 0 publications

Non-metallic Inclusions in Different Ferroalloys and Their Effect on the Steel Quality: A Review

Non-metallic Inclusions in Different Ferroalloys and Their Effect on the Steel Quality: A Review

Effect of Size of Ferrotitanium on the Melting Behavior and the Yield in the Refining of Interstitial Free Steel by RH De-gasser

Loss mechanism of micro-carbon ferromanganese during RH refining

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