Electric Furnace Bath Structure During High-Chromium Ferrochrome Production

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

doi:10.1007/s11015-018-0686-y

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…Russia is among the largest ten world producers of ferrochrome [3], which cannot be said about ferronickel. In our country, for the production of high-quality corrosionresistant steels, electrolytic nickel (containing about 99% by weight Ni) is used predominantly.…”

Section: Kne Materials Sciencementioning

confidence: 99%

Development of the New Method for Oxidized Nickel Ore Processing

Khalezov¹,

Zayakin²,

Gavrilov³

et al. 2019

Kms

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Section: Kne Materials Sciencementioning

confidence: 99%

Development of the New Method for Oxidized Nickel Ore Processing

Khalezov¹,

Zayakin²,

Gavrilov³

et al. 2019

Kms

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“…В настоящее время отсутствуют достоверные знания и измерения фактических величин и зависимостей активноиндуктивных сопротивлений внешнего энергоподвода от особенностей конструктивного оформления и физического состояния его деталей и узлов, от электрического режима в данный период плавки. Это связано отчасти с тем, что на действующих электропечных агрегатах в процессе многих модернизаций существенно изменились конструктивные решения коротких сетей, первоначальные расчетные и справочные электротехнические и геометрические параметры электропечных установок (ЭПУ) [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionunclassified

Analysis of the electrical characteristics influence of the current supply on the technical and economic indicators of the melting of ferrosilicochrome

Zhunusov,

Kulinich,

Zhunusova

2022

EJSU

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This article presents the results of a research of the influence of the electrical characteristics of the current lead on the technical and economic indicators of ferrosilicochromium smelting. The parameters of the operation of the furnace No.43 of the Aksu Ferroalloy Plant in connection with the change in the characteristics of the current lead during the modernization of the EPU are considered. According to the experimental results of calculations, the power Ru, the composition of the metal and slag from the production of ferrosilicochromium are have great importance, almost with a rare use of the electrical resistance of the solid charge and the electrical resistivity of the slag, regardless of the readings of the sensors and the electrical parameters of the current supply. When using computational computer-computer programs (CRP), eleven modes of network operation are used. In this paper, mode 10 is closest to the production mode. According to mode 10, the electrical parameters of the current supply have been improved. According to the conditions of experimental calculations, the power Ру, the compositions of the metal and slag of ferrosilicochromium production remain constant. Modernization of a short network and an increase in the deepening of electrodes into the charge led to a decrease in Rу to 0.945÷0.958 mΩ and secondary voltage Uл to 155 V, to a decrease in the SiC content in the slag to 15.1 and a decrease in flyoff SiО2 to 67.0÷68.6 kg/t. The deepening of the electrodes with their reduced fit increased the furnace productivity to 79.8 t, and the specific power consumption decreased by 870 kW/h·t.

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“…chromite ore and the reducing agent are in a solid state, thereby, the carbothermal reduction of metals from chromite ore metals is the result of the solid phase interaction. Despite the great practical value and big attention to the theory of this process during several decades, the mechanism of reduction does not have a clear explanation [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Iron and Chromium Reduction from Chrome Ore Concentrates by Solid Carbon and Carbon Monoxide

Mukashev

Kosdauletov

Сулеймен

2020

SSP

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The possibility of reduction of chromium and iron from complex oxides by gaseous carbon monoxide and solid carbon was investigated. The chromium ore concentrates of Kempirsai and Aganozero deposits used in present study had different ratio of iron and chromium content. The Reduction in CO gas atmosphere did not result in reduction of chromium and iron from spinels; however, it resulted in reduction of fines from the drying apparatus, where the particles of coke presented along with the particles of the Kempersai chromite. At the same time, iron and nickel were reduced from the silicates of the gangue minerals. In the samples mixed with solid carbon a continuous layer of carbides formed on the surface of the spinel grains. The formation of a continuous shell retarded and practically stopped the reduction process. The further development of reduction was possible after destruction of the shell that occurred as a result of smelting of the carbides and silicides mixture that constitute the shell.

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Electric Furnace Bath Structure During High-Chromium Ferrochrome Production

Cited by 6 publications

References 2 publications

Development of the New Method for Oxidized Nickel Ore Processing

Development of the New Method for Oxidized Nickel Ore Processing

Analysis of the electrical characteristics influence of the current supply on the technical and economic indicators of the melting of ferrosilicochrome

Comparison of Iron and Chromium Reduction from Chrome Ore Concentrates by Solid Carbon and Carbon Monoxide

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