Alloying and Modification of Iron-Carbon Melts with Natural and Man-Made Materials

Nokhrina, O. I.; Gizatulin, R.A.; Golodova, M. A.; Proshunin, I. E.; Valuev, Denis V.; Martyushev, Nikita V.; Karlina, A. I.

doi:10.1007/s11015-022-01289-z

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…Відомості про особливості розплавлення в чавуні брикетованих модифікаторів становлять великий практичний інтерес, особливо враховуючи в їх складі широкий спектр концентрацій різних компонентів, відмінностей по щільності, пористості, формам і розмірам брикетів (Jain et al, 2021;Kondrat'ev et al, 2014;Nokhrina et al, 2022;Poluboyarov et al, 2015;Zhukov et al, 1989). Основним недоліком їх використання є висока температура обробки чавуну (1450 0 С) для забезпечення більш повної засвоюваності модифікатора та низька щільність, що не дозволяє брикетованому модифікатору прореагувати в повному обсязі.…”

Section: результати (Results)unclassified

“…Застосування ж брикетованих модифікаторів на основі нанодисперсних матеріалів дозволяє модифікувати чавун практично при будь-якій температурі розплаву вище 1200 0 С (Nokhrina et al, 2022;Poluboyarov et al, 2015;Suslo, 2015;Ten et al, 2013).…”

Section: результати (Results)unclassified

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Development of briquette modifier composition to increase the stability of grinding media in iron ore fine grinding mills

Suslo,

Huk,

Panchenko

2023

ete

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Recently, there has been a trend towards the use of modifiers in the form of briquettes produced by pressing highly dispersed materials with a binder. The choice of a rational composition of the briquette-modifier will improve the properties of cast irons and steels by increasing the assimilation of the modifying components and facilitating their introduction into the melt. Therefore, the possibility of using briquetted materials for modifying and alloying cast iron to improve melt quality, considered in this paper, is relevant. A literature analysis was carried out on the methods of producing briquettes. The influence of the main technological parameters of briquettes production on their quality characteristics is studied. It was found that the main limitation of the use of briquette modifiers is their high dissolution temperature (more than 1450 °C). The paper considers the possibility of reducing the briquette dissolution temperature by introducing the magnesium-aluminium alloy MAGR into its composition, which helps to accelerate the dissolution due to the internal rupture of the briquette from thermal shock. The rational composition of the modifier, which includes nanodispersed titanium carbonitride powder (35-40%), granular MAGR alloy (5-10%) and dispersed cast iron chips (the rest), was determined by laboratory tests. The proposed composition of the briquettes is appropriate in terms of the optimum dissolution temperature (12500C) and increasing the rate of interaction of the briquette reagents with the melt. The experimental briquette modifiers were tested in industrial conditions at PJSC ArcelorMittal Kryvyi Rih. According to the results of the research, it was found that the use of the developed briquette-modifier in the manufacture of cast iron grinding balls increases their operational stability by 18-30%, which made it possible to reduce the cost of ore grinding.

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Section: результати (Results)unclassified

Development of briquette modifier composition to increase the stability of grinding media in iron ore fine grinding mills

Suslo,

Huk,

Panchenko

2023

ete

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“…Researchers of the Siberian State Industrial University note that in order to provide the Russian industry with its own raw materials [1], the use of Kuzbass manganese ores with high iron content is of greatest interest, and other studies provide data on the iron beneficiation of the manganese ore of the Kagaydatskoye deposit of Kuzbass [2]. During the study, the ore beneficiation has been performed by washing, gravitation, magnetic separation, and floatation.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the beneficiation of refractory ferromanganese ores “Zhomart” deposits

Dyussenova,

Lukhmenov,

Imekeshova

et al. 2023

KIMS/CUMR/MShKP

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In order to provide ferroalloy production with high-quality raw materials, the need to develop technologies for processing of low-grade manganese and ferromanganese ores is becoming increasingly important. In view of the change in the quality characteristics of ores, the decrease in manganese content and the ability to beneficiation by traditional methods, it is necessary to consider new approaches and technological solutions. The article presents data from a study on the beneficiation of refractory iron-manganese ore from the Zhomart deposit. The mineralogy, physical and mechanical properties, and granulometric composition of the ore were determined. The results of a study on gravitational beneficiation using a laboratory pulsator with a pneumatic drive and a laboratory 2-chamber diaphragm jigging machine and magnetic beneficiation of ore with a high-intensity magnetic field are presented. Iron-containing concentrate (Fe-45% and Mn-6.5% is mainly represented by hematite mixed with non-metallic minerals quartz and calcite) and iron-manganese concentrate (Mn-21.7% and Fe-21.1% in the form of hematite, Brownite and pyrolusite, also mixed with quartz and calcite). The concentrates are not suitable for smelting manganese-containing ferroalloys but can be used in the process of electrothermal beneficiation with selective carbothermal reduction of iron in an ore-thermal furnace. The smelting products can be manganese cast iron and iron-free, low-phosphorus limiting manganese slag with a high ratio of manganese to iron.

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Alloying and Modification of Iron-Carbon Melts with Natural and Man-Made Materials

Cited by 2 publications

References 10 publications

Development of briquette modifier composition to increase the stability of grinding media in iron ore fine grinding mills

Development of briquette modifier composition to increase the stability of grinding media in iron ore fine grinding mills

Investigation of the beneficiation of refractory ferromanganese ores “Zhomart” deposits

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