Current state of electrical arc furnace dusts processing in Russia and abroad

Yakornov, S. A.; Panshin, A. M.; Козлов, П. А.; Ivakin, D. A.

doi:10.17580/tsm.2017.04.03

Cited by 7 publications

(3 citation statements)

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“…The rotary kiln process is the most widely used process in the harmless treatment of Zn-containing FMDS [82,83], and the representative processes are the SPM method and Waelz method.…”

Section: Rotary Kiln Processmentioning

confidence: 99%

Multi-Source Ferrous Metallurgical Dust and Sludge Recycling: Present Situation and Future Prospects

Zhang,

Long

et al. 2024

Crystals

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Multi-source ferrous metallurgical dust and sludge are significant components of iron-containing solid waste in the iron and steel industry. It is crucial for the sustainable operation of steel enterprises to recycle iron from ferrous metallurgical dust and sludge (FMDS) for use in steel smelting. However, besides Fe, FMDS also contains valuable elements such as Zn, Pb, K, and Na, among others. While these valuable elements hold high recovery value, they impede the direct reuse of FMDS by iron and steel enterprises. This paper introduces the compositional characteristics of multi-source ferrous metallurgical dust and sludge, analyzes the main recycling technologies associated with FMDS at the present stage of development, and discusses the characteristics of different technologies. In view of this, a new idea of the “cooperative treatment of multi-source ferrous metallurgical dust and sludge—full quantitative recovery of valuable elements” is put forward. This new idea integrates a variety of treatment processes to directly recycle FMDS within the steel plant, enhancing the adequacy of dust and sludge recovery and reducing the risk of environmental pollution. This paper provides a reference for achieving the full quantification and utilization of high-value-added FMDS in steel plants.

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“…The rotary kiln process is the most widely used process in the harmless treatment of Zn-containing FMDS [82,83], and the representative processes are the SPM method and Waelz method.…”

Section: Rotary Kiln Processmentioning

confidence: 99%

Multi-Source Ferrous Metallurgical Dust and Sludge Recycling: Present Situation and Future Prospects

Zhang,

Long

et al. 2024

Crystals

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“…Despite the growing cost of the storage of this raw material at landfills and slag fields, the multi-million-ton dumps from the ferrous metallurgy production activity (oily scale, gas-cleaning dust, sludge, slag) are continuously increasing [16][17][18]. Such hard-to-enrich and low-grade materials include electric arc furnace dust, which can be not only an ironcontaining raw material for iron and steel production but allows for extracting zinc into a commercial product since the dust contains zinc compounds in sufficient quantities [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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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“…The EAFDs have rather compound and diverse chemical composition, which varies depending on the technology used and the feedstock composition. The range of zinc content in dusts is quite wide; ranging from 2 to 25%, in some cases the zinc content reaches 40% [2][3]. As a rule, dust contains iron, zinc, cadmium, lead, chlorine, alkaline and alkaline-earth metals.…”

Section: Introductionmentioning

confidence: 99%

Studies on the regularities of the steelmaking zinc-bearing dusts leaching in ammonium chloride solutions

Mamyachenkov¹,

Анисимова²,

Toporkova³

et al. 2019

nfm

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Current state of electrical arc furnace dusts processing in Russia and abroad

Cited by 7 publications

References 0 publications

Multi-Source Ferrous Metallurgical Dust and Sludge Recycling: Present Situation and Future Prospects

Multi-Source Ferrous Metallurgical Dust and Sludge Recycling: Present Situation and Future Prospects

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

Studies on the regularities of the steelmaking zinc-bearing dusts leaching in ammonium chloride solutions

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