Activated reaction of magnesium with hot metal in desulfurization

Шевченко, А. Ф.; Двоскин, Б. В.; Bashmakov, A. M.; Manachin, I. A.; Shevchenko, A. M.; Shevchenko, S. A.; Kislyakov, V.G.; Ye, Liu Dun

doi:10.3103/s0967091214110163

Cited by 2 publications

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“…Висновки Проаналізовано методи позапічного рафінування рідкого чавуну в контексті використання на вітчизняних металургійних підприємствах в сучасних умовах. Підтверджено доцільність використання методів позапічного рафінування на основі інжекції зернистого магнію та сумішей системи CaO-Mg. При цьому технологія з використанням зернистого магнію приблизно у 1,7 разів менше за витратами у порівнянні з технологією з використанням суміші CaO-Mg [23]. Стосовно технологій комплексного рафінування визначено, що для вітчизняних умов доцільно розробити технологію, яка передбачає видалення сірки та фосфору з розплаву без суттєвого зниження концентрації кремнію в розплаві.…”

Section: рис 1 загальна схема класифікації технічних рішень з позапіч...unclassified

Prospects for the Use of Out-of-Furnace Cast Iron Refining Technologies in the Context of Domestic Metallurgical Production

Lavr,

Volodymyr,

Kostyantin

et al. 2023

CDSTU

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In today's environment, domestic steelmaking enterprises, and especially steelmaking within them, are experiencing a significant negative impact from the shortage of high-quality raw materials and the lack of stability of incoming charge materials. At the same time, in order to overcome these problems, technical solutions are used in the world practice for out-of-furnace treatment of charge materials, including liquid iron. Thus, an urgent issue of domestic metallurgical science is to determine the effectiveness of the most common methods of out-of-furnace pig iron treatment in relation to the current realities of domestic steelmaking. A general classification of technical solutions for out-of-furnace pig iron refining has been made and a comparative analysis of the efficiency of the technologies under consideration has been performed. Engineering calculations were performed using mathematical models of material and heat balances of converter smelting, adapted for 250-ton oxygen converters, using a top tuyere of classical design. The influence of the considered technical solutions for out-of-furnace iron treatment on such basic technological indicators of BOF melting as specific consumption of liquid iron, specific consumption of lime, and yield of usable iron was analyzed. The comparison was carried out in relation to the indicators of basic melting without the use of out-of-furnace melt treatment technologies. The expediency of using out-of-furnace refining methods based on the injection of globular magnesium and mixtures of the CaO-Mg system was confirmed. As for the complex refining technologies, it was determined that it is advisable to develop a technology for domestic conditions that provides for the removal of sulfur and phosphorus from the melt without significantly reducing the concentration of silicon in the melt.

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Section: рис 1 загальна схема класифікації технічних рішень з позапіч...unclassified

Prospects for the Use of Out-of-Furnace Cast Iron Refining Technologies in the Context of Domestic Metallurgical Production

Lavr,

Volodymyr,

Kostyantin

et al. 2023

CDSTU

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Study on the Interaction Dynamics of Magnesium and Molten Cast Iron: A Chill Casting Perspective

Adhiwiguna,

Horn,

Deike

2024

Metall Mater Trans B

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This study presents a reassessment of the role of magnesium in the production process of cast iron. Through detailed experimentation involving an interrupted reaction process employing a chill casting approach in a copper mold, several reaction products that emerged during the high-temperature interaction between magnesium and cast iron were thoroughly examined. Two cast irons with different chemical compositions, notably different sulfur contents, were used to describe the contribution of magnesium during desulfurization and nodularization. The designed approach successfully revealed that rapid deoxidation and desulfurization reactions of cast iron involving liquid magnesium take place before following its ignition characteristics. Furthermore, the behavior of dissolved carbon concerning the remaining magnesium and magnesium-containing reaction products in molten iron is also empirically identified. Specifically, large graphite flakes and an indication of solidification behavior shifting are circumstantially detected in the magnesium-rich regions, which, to a certain extent, can provide additional insight into the role of magnesium during graphite nucleation.

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Activated reaction of magnesium with hot metal in desulfurization

Cited by 2 publications

References 0 publications

Prospects for the Use of Out-of-Furnace Cast Iron Refining Technologies in the Context of Domestic Metallurgical Production

Prospects for the Use of Out-of-Furnace Cast Iron Refining Technologies in the Context of Domestic Metallurgical Production

Study on the Interaction Dynamics of Magnesium and Molten Cast Iron: A Chill Casting Perspective

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