Reduction kinetics of liquid iron oxide-containing slags by carbon monoxide

Utigard, T. A.; Sánchez, Gerardo Villa; Manríquez, J.; Luraschi, A.; Díaz, C.; Cordero, Dolores Flovia Rodríguez; Almendras, E.

doi:10.1007/s11663-997-0009-3

Cited by 40 publications

(24 citation statements)

References 12 publications

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“…There are a number of papers [11][12][13][14][15][16][17][18][19][20][21][22] devoted to the study on the kinetics of the reduction of FeO and Fe 2 O 3 oxides from slags, but only few deal with the reduction of noneferrous metals from slags. Therefore, an extensive study on the kinetics of copper recovery from industrial slags was undertaken to improve effectiveness of the copper recovery in Głogów smelter.…”

Section: +mentioning

confidence: 99%

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Influence Of Temperature On The Rate Of Copper Recovery From The Slag Of The Flash Direct-To-Blister Process By A Solid Carbon Reducer

Madej¹,

Kucharski²

2015

Archives of Metallurgy and Materials

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Influence of temperature on the rate of copper recovery from the slag of the flash dIrect-toblIster process by a solId carbon reducer WpłyW temperatury na szybkość odmiedzioWania żużla z procesu zaWiesinoWego za pomocą reduktora WęgloWegoThe aim of the work was to investigate the influence of temperature on the rate of copper removal from the obtained slag from the flash direct-to-blister process by means of a carbon reducer. The slag used in this work was taken from the direct-to-blister Outokumpu flash furnace at the smelter in Głogów, and graphite penetrators were used as the slag reducers. The experiment was carried out at 1573 K, 1623 K and 1673 K. It was found that the rate of the de-coppering process of the "Głogów" slag increased with the increase of temperature.Keywords:Celem pracy było określenie wpływu temperatury na kinetykę procesu odmiedziowania żużli z procesu zawiesinowego za pomocą reduktora węglowego. Do badań użyto żużel pobrany z procesu zawiesinowego realizowanego w HM "Głogów", przy czym reduktorem były penetratory grafitowe zanurzane w badanym żużlu. Badania przeprowadzono w temperaturach 1573 K, 1623 K i 1673K. Uzyskane wyniki wskazują, że szybkość procesu zwiększała się ze wzrostem temperatury ale tyko w pierwszym okresie.

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Section: +mentioning

confidence: 99%

“…They found that the reduction is controlled by the CO pressure. They suggested that the reduction follows the Min and Fruehan's model [18] for the gas/ slag reaction:…”

Section: +mentioning

confidence: 99%

Influence Of Temperature On The Rate Of Copper Recovery From The Slag Of The Flash Direct-To-Blister Process By A Solid Carbon Reducer

Madej¹,

Kucharski²

2015

Archives of Metallurgy and Materials

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“…Boudouard reaction, CO absorption and reaction with the Galimov et al, [10] who reduced iron oxides in FeO-Fe 2 O 3 -slag, and nucleation of gaseous and metal products have all CaO-SiO 2 slags, also found that the rate of reduction been suggested as possible rate-controlling steps. [6][7][8][9][10][11][12][13][14][15][16][17][18] In increased significantly with increasing amount of trivalent general, the reduction process proceeds as follows:…”

Section: Introductionmentioning

confidence: 99%

“…Since in the experiments using graphite the highest 1-A comparison of the rate of fayalite slag reduction using pure CO gas or graphite rods. [11,12] of alternating current (AC). The improved recovery using DC may partly be explained by electrodeposition of paymetals and partly by electrocapillarity motion phenomena and improved coalescence of entrained prills.…”

Section: Introductionmentioning

confidence: 99%

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Rate of slag reduction in a laboratory electric furnace—alternating vs direct current

El-Rassi¹,

Utigard

2000

Metall Mater Trans B

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The objective of this laboratory investigation was to measure the reduction kinetics of nickel smelting and converting slags using alternating current (AC) and direct current (DC). The two slags tested contained 34 and 51 pct total iron in the form of FeO and Fe 3 O 4 . Laboratory experiments were carried out between 1200 ЊC and 1450 ЊC, and the rate of reduction was measured based on the CO and CO 2 contents in the off-gas from the furnace. Upon application of power to a pair of electrodes immersed in the molten slag, the reduction rate increased rapidly. This increase is explained by an increase in the electrode tip temperature enhancing the rate of the Boudouard reaction. The rate of reduction of the converter slag containing 29 pct Fe 3 O 4 was 2 to 3 times faster than the smelting slag. With DC, the reduction rates at the anode and cathode were basically identical to each other, while for the smelting slag with only 8 pct Fe 3 O 4 , the anode and cathode reduction rates were quite different. With increasing current or power density, the temperatures of the electrodes increase above that of the bulk slag.

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Resource Recovery and Recycling from Waste Metal Dust (II): Waste Copper Dust

Okanigbe

2023

Resource Recovery and Recycling From Waste Metal Dust

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Reduction kinetics of liquid iron oxide-containing slags by carbon monoxide

Cited by 40 publications

References 12 publications

Influence Of Temperature On The Rate Of Copper Recovery From The Slag Of The Flash Direct-To-Blister Process By A Solid Carbon Reducer

Influence Of Temperature On The Rate Of Copper Recovery From The Slag Of The Flash Direct-To-Blister Process By A Solid Carbon Reducer

Rate of slag reduction in a laboratory electric furnace—alternating vs direct current

Resource Recovery and Recycling from Waste Metal Dust (II): Waste Copper Dust

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