Extraction of zinc and iron from electrosmelting dust

Nemchinova, N. V.; Chernykh, V. E.; Tyutrin, A. A.; Patrushov, Alexey E.

doi:10.3103/s0967091216050090

Cited by 9 publications

(9 citation statements)

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“…The iron distribution throughout iron-containing phases in EAFD samples was studied by X-ray phase analysis on a DRON-3.0 diffractometer (JSC ʺScientific production enterprise ʺBurevestnikʺ, Saint Petersburg, Russia). It has been established that the dust contains valuable components in the form of ZnFe2O4 and ZnO (Figure 3) [27]. The iron distribution throughout iron-containing phases in EAFD samples was studied by X-ray phase analysis on a DRON-3.0 diffractometer (JSC Scientific production enterprise "Burevestnik", Saint Petersburg, Russia).…”

Section: Research Objectivementioning

confidence: 99%

“…The iron distribution throughout iron-containing phases in EAFD samples was studied by X-ray phase analysis on a DRON-3.0 diffractometer (JSC Scientific production enterprise "Burevestnik", Saint Petersburg, Russia). It has been established that the dust contains valuable components in the form of ZnFe 2 O 4 and ZnO (Figure 3) [27]. Chemical analysis of the samples was performed on an X-ray wavelength-dispersive spectrometer S8 TIGER (Bruker, Billerica, MA, USA); the results are given in Table 2.…”

Section: Research Objectivementioning

confidence: 99%

Section: Research Objectivementioning

confidence: 99%

“…The proposed technology of EAFD processing consists of the recovery of iron and zinc from their oxygen-containing forms by active carbon-containing materials in a rotaryhearth furnace [27,28]. The briquettes charge includes oxide scale, EAFD, long-flame little nut (DOM) coal, lime, and molding sand.…”

mentioning

confidence: 99%

“…The general scheme of EAFD processing includes the following stages: reception and preparation of raw materials; obtaining briquettes with minimum moisture content (2%); obtaining granulated pig iron and zinc-containing fumes during reduction smelting; purification of zinc oxide fumes for obtaining a commercial product. The proposed technology of EAFD processing consists of the recovery of iron zinc from their oxygen-containing forms by active carbon-containing materials in a rot hearth furnace [27,28]. The briquettes charge includes oxide scale, EAFD, long-flame l nut (DOM) coal, lime, and molding sand.…”

mentioning

confidence: 99%

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Pyrometallurgical Technology for Extracting Iron and Zinc from Electric Arc Furnace Dust

Nemchinova

Patrushov²,

Tyutrin

2023

Applied Sciences

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This study is aimed at developing a technology for processing electric arc furnace dust (EAFD) into granulated cast iron and a zinc-containing product. The study object was the dust from the EAF of PJSC Magnitogorsk Iron and Steel Works (Magnitogorsk, Chelyabinsk region). It has been established that the dust contains valuable components in the form of ZnFe2O4 and ZnO. The processing of EAFD involves the reduction of Fe and Zn in a charge from their oxygen-containing forms with C and CO. The content of the charge components was calculated in % as follows: EAFD—17.44; scale—51.33; hard coal—20.61; quartz sand—4.71; lime—5.91. The experiments in the high-temperature LHT 08/17 furnace (Germany) allowed for defining the optimal temperature regime for reduction melting. As a result of laboratory tests, granulated pig iron samples were obtained, containing in wt%: Fe—95.27; C—4.4; S—0.07, and others. Captured zinc-containing product after calcination (to remove halogens) contained 90.21 wt% ZnO. The resulting granulated pig iron is recommended as one of the charge components in electrometallurgical steel production. The zinc-containing product is recommended as a raw material for Zn production and others.

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Section: Research Objectivementioning

confidence: 99%

Section: Research Objectivementioning

confidence: 99%

Section: Research Objectivementioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Pyrometallurgical Technology for Extracting Iron and Zinc from Electric Arc Furnace Dust

Nemchinova

Patrushov²,

Tyutrin

2023

Applied Sciences

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Research status and development of extraction process of zinc-bearing dust from ironmaking and steelmaking—a critical review

Zhu

Huang

et al. 2023

J. Iron Steel Res. Int.

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Investigation of dielectric heating method of zinc-containing materials for chlorides removal

Ryazanov

Михайлов

Khmeleva

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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The technological development of the world community makes it necessary to resolve the issues of the produced industrial residues utilization. Worn-out galvanized metal cars, ceilings and other metal structures require orderly utilization. Utilization of galvanized scrap may be carried out in Electric Arc Furnaces (EAF) to obtain intermediate steel and EAF dust. Electric Arc Furnaces dus contains zinc, so it is used as a secondary raw material for the production of metallic zinc. Waelz oxides are formed in Waelz kilns, after the primary processing of EAF dust. Waelz oxide contains halides that must be removed first. Halides may be removed by heating to temperatures of about 1000°C. Dielectric (microwave) heating is a promising and environmentally friendly method for material processing. Microwave heating is carried out without burning natural gas, which leads to decrease of waste gases volume. The work experimentally confirmed the possibility of zinc-containing materials heating at electromagnetic emission exposure. The duration of products heating up to the temperature of 1000°C was 128 - 188 s. The residual content of chloride ions in the calcined products is less than 0.05 wt%.

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Extraction of zinc and iron from electrosmelting dust

Cited by 9 publications

References 1 publication

Pyrometallurgical Technology for Extracting Iron and Zinc from Electric Arc Furnace Dust

Pyrometallurgical Technology for Extracting Iron and Zinc from Electric Arc Furnace Dust

Research status and development of extraction process of zinc-bearing dust from ironmaking and steelmaking—a critical review

Investigation of dielectric heating method of zinc-containing materials for chlorides removal

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