DUST FORMATION IN ELECTRIC ARC FURNACE: BIRTH …

Published in Powder Technology, 2005, 157, 1-3, 2-11. 1 DUST FORMATION IN ELECTRIC ARC FURNACE: BIRTH OF THE PARTICLES Anne-Gwénaëlle Guézennec1*, Jean-Christophe Huber2, Fabrice Patisson1, Philippe Sessiecq1, Jean-Pierre Birat2, Denis Ablitzer1 1 – Laboratoire de Science et Génie des Matériaux et de Métallurgie, Parc de Saurupt, 54042 Nancy Cedex, France

[0708.3034] Dust formation in electric arc furnace : birth ...

Aug 22, 2007· The characterization of Electric Arc Furnace (EAF) dust shows that bubble burst at the liquid steel surface is the principal source of dust emission. We have therefore developed an experimental device for studying this phenomenon. As in the case of the air-water system, the bubble-burst gives birth to two types of droplets: film drops and jet drops. The jet drop formation is observed …

Dust formation in electric arc furnace : birth of the ...

The characterization of Electric Arc Furnace (EAF) dust shows that bubble burst at the liquid steel surface is the principal source of dust emission. We have therefore developed an experimental device for studying this phenomenon. As in the case of the air-water system, the bubble-burst gives birth to two types of droplets: film drops and jet ...

Dust formation in Electric Arc Furnace: Birth of the ...

Sep 29, 2005· The Electric Arc Furnace (EAF), designed for steelmaking from recycled scrap iron (see Fig. 1), also co-produces between 15 to 25 kg of dust per ton of steel.Dust formation is strongly linked to the process which can be divided into five steps:

EAF dust: An overview on the influences of physical ...

Apr 01, 2017· During EAF operation, electric-arc furnace dust, EAFD, is generated as a result of the vaporization of molten iron with nonferrous metals, CO bursting bubbles and the ejection and dragging of particles from the metal bath, slag and other materials in the oven . A basic characteristic of the EAF is precisely the presence of an electric-arc ...

Dust formation by bubble-burst phenomenon at the surface ...

We have developed an experimental device for studying the main mechanism of dust formation in electric arc furnace steelmaking: the burst of gas bubbles at the liquid steel surface. As in the case of the air-water system, the bubble-burst process takes place in three steps: breaking of the film cap, projection of film drops, and projection of jet drops.

Dust formation by bubble-burst phenomenon at the surface ...

We have developed an experimental device for studying the main mechanism of dust formation in electric arc furnace steelmaking: the burst of gas bubbles at the liquid steel surface. As in the case of the air-water system, the bubble-burst process takes place in three steps: breaking of the film cap, projection of film drops, and projection of ...

Dust formation by bubble-burst phenomenon at the surface ...

We have developed an experimental device for studying the main mechanism of dust formation in electric arc furnace steelmaking: the burst of gas bubbles at the liquid steel surface. As in the case of the air-water system, the bubble-burst process takes place in three steps: breaking of the film cap, projection of film drops, and projection of ...

Properties of steelmaking dust and the mechanism of its ...

Mar 23, 2012· Results are presented from studies of the properties of steelmaking dust and the main mechanisms of dust formation during steel production in basic oxygen converters and electric-arc furnaces. It is noted that the issue of the mechanism by which the dust is formed has not yet been definitively resolved.

Zinc Ferrite Decomposition by Sodium ... - Scientific.Net

When re-melting scrap in electric arc furnaces (EAF), dust is formed. This dust is a rich zinc-containing raw material. The composition of the EAF-dust from JSC “Pervouralsk New Pipe Plant” was investigated. Dust contains 18 wt.% of zinc, more than 1/3 of zinc is a part of the slightly soluble in acids and alkalis of zinc ferrite ZnFe2O4.

Minerals | Free Full-Text | Thermodynamic Investigation of ...

During the remelting of automobile scrap in the electric arc furnace steelmaking process, a dust is generated. This dust contains significant amounts of zinc, iron, and lead and in some cases, copper and nickel. However, the recovery of these metals is difficult, because of the complex chemical and physical characteristics of the dust. Numerous pyrometallurgical, hydrometallurgical and hybrid ...

Current state of electrical arc furnace dusts processing ...

World trends of metallurgy development show the constant growth of the electrical steel smelting output. This involves the increase of zinc-containing dusts formation. In recent years the increased output of EAF (electrical arc furnaces) dusts processing lead to Waelz-kilns building. From 2012 to 2016 the portion of EAF dusts in Waelz-kilns increased from 80% to 85%, and is equal to 3,4 ...

Carbothermic reduction of Electric Arc Furnace Dust via ...

Among these residues, there is a material called Electric Arc Furnace Dust (EAFD). The production of steel by Electric Arc Furnace (EAF) increased about 12% in Brazil and 15% in the world, from 2005 to 2014. Therefore, the amount of EAFD generation has probably increased.

Recycling of Zinc from the Steelmaking Dust in the ...

Abstract. During the steel scrap melting process in an electric arc furnaces, the generated dust may contain a significant amount of zinc. The content of zinc in case of melting galvanized steel scrap is variable and ranges from 15 to 40 wt%.

Dust arising during steelmaking processes - Journal of ...

[12] N. Tsubouchi, H. Hasimoto, N. Ohtaka, Y. Ohtsuka, Chemical characterization of dust particles recovered from bag filters of electric arc furnaces for steelmaking: Some factors influencing the formation of hexachloobenzene, Journal of Hazardous Materials 183 (2010) 116-124.

Briquetting of EAF Dust for its Utilisation in ...

Dust generated at an electric arc furnace during steel production industry is still not a solved problem. Electric arc furnace dust (EAF) is a hazardous solid waste. Sintering of well-prepared briquetted mixtures in a shaft furnace is one of possible methods of EAFD utilisation. Simultaneously some metal oxides from exhaust gases can be separated.

Zn Loss into ZnFe2O4 in an Open Type Electric Arc Furnace ...

Gue´zennec AG, Huber JC , Patisson F , Sessiecq P , Birat JP , Ablitzer D ( 2005 ) Dust formation in electric arc furnace: birth of the particles . Powder Technol 157 ( 1 ): 2 - 11 . doi: 10 .1016/j.powtec. 2005 . 05 .006 10. Commission European ( 2007 ) Directorate-general for research and innovation, development of operating conditions to ...

The EAF dust chemical and phase composition research ...

Electric arc furnace dust (with a high content of carbon, silicon and sulfur) is discussed through the prism of its multicomponent composition, which depends on the specifics of steel production. The XRD and Mössbauer Spectroscopy analysis of the dust did not make possible obtaining data for some phase, in particular many chemical compounds ...

Sustainability | Free Full-Text | Exploring Efficiencies ...

Sintering of well-prepared briquetted mixtures in a shaft furnace is one of the possible methods of electric arc furnace dust (EAFD) utilization. Simultaneously, some metal oxides from exhaust gases can be separated. In this way, various metals are recovered, particularly zinc. As a result, zinc-free briquettes are produced with a high iron content, which can be used in the steelmaking process.

The EAF dust chemical and phase composition research ...

The EAF dust, analyzed in this study, was high-carbon and high-silica. As it has been detected by IR absorption and gravimetric analysis, the EAF dust contained carbon (7.9%) and SiO 2 (13.5%) .It was just the dust of composition with high-carbon and high-silica, where complex chemical compounds have required identification by other analytical tools.

Sustainability | Free Full-Text | Exploring Efficiencies ...

Sintering of well-prepared briquetted mixtures in a shaft furnace is one of the possible methods of electric arc furnace dust (EAFD) utilization. Simultaneously, some metal oxides from exhaust gases can be separated. In this way, various metals are recovered, particularly zinc. As a result, zinc-free briquettes are produced with a high iron content, which can be used in the steelmaking process.

New pyrometallurgical process of EAF dust treatment with ...

Aug 07, 2015· In addition, lower iron or ZnFe O 2 4 2 4 Birat, and D. Ablitzer, Dust formation in electric arc furnace: concentrations in EAF dust resulted in a lower CaO con- birth of the particles, Powder Technol., 157(2005), No. 2, p. sumption, especially in the case of dust regenerated from [7] J. Antrekowitsch and H. Antrekowitsch, Hydrometallurgi ...

Briquetting of EAF Dust for its Utilisation in ...

Dust generated at an electric arc furnace during steel production industry is still not a solved problem. Electric arc furnace dust (EAF) is a hazardous solid waste. Sintering of well-prepared briquetted mixtures in a shaft furnace is one of possible methods of EAFD utilisation. Simultaneously some metal oxides from exhaust gases can be separated.

Zn Loss into ZnFe2O4 in an Open Type Electric Arc Furnace ...

Gue´zennec AG, Huber JC , Patisson F , Sessiecq P , Birat JP , Ablitzer D ( 2005 ) Dust formation in electric arc furnace: birth of the particles . Powder Technol 157 ( 1 ): 2 - 11 . doi: 10 .1016/j.powtec. 2005 . 05 .006 10. Commission European ( 2007 ) Directorate-general for research and innovation, development of operating conditions to ...

Heat Optimization in Internal Curing Process of …

dust was studied due to the presence of iron element as a conductive material that may assist the heat distribution in geopolymer system. Electric Arc Furnace Dust (EAFD), known as steel dust, was a solid industrial hazardous waste generated in the collection of …

granulate electric furnace slag

US4447265A Method and composition for foaming slag in . A slag-foaming composition and process for use in electric arc furnace steelmaking. The compositions comprise from about 15 to 80 wt % of a carbon source, the remainder consisting substantially of a source of an oxide of calcium; alternatively, the compositions comprise from about 15 to 30 wt % of a carbon source, the remainder consisting ...

mushroom formation in blast furnace

Literature review reveal that formation of a narrow cohesive zone lower down the blast furnace improves the productivity and reduces the coke rate and that in majority of the cases, the iron bearing material in the blast furnace reaches the softening temperature (top end of cohesive zone) with a reduction degree higher than 50 percent[1].

US5942198A - Beneficiation of furnace dust for the ...

The beneficiation of an electric arc furnace (EAF) dust waste stream comprising zinc compounds by collecting and combining dust from two or more EAF batches with coal fines to form briquettes, adding the briquettes to a final EAF batch with the charge, and collecting the dust from the final EAF batch, so that the zinc in the beneficiated dust is of a greater proportion than in a typical batch ...

Leaching of secondary zinc oxides using sulphuric acid ...

Create an AI-powered research feed to stay up to date with new papers like this posted to ArXiv. Share This Paper. Figures and Tables from this paper. ... iron and calcium from electric arc furnace (EAF) dust in hydrometallurgical processing in sulfuric acid solutions: Thermodynamic and kinetic aspects ... 2015; Formation of the ZnFe2O4 phase ...

Energy saving measures for steelmaking arc furnace - Xi'an ...

Electric arc furnace slag foaming process allowed by high voltage and long arc operation mode, so as to improve the power factor of the power supply, the power factor is increased from 0.65 to 0.85, reducing the thermal radiation of electric arc furnace wall and furnace cover, improve service life, improve the thermal efficiency, reduce the ...