Hydrometallurgical process for zinc recovery from electric arc furnace dust (EAFD)

Oustadakis, P.; Tsakiridis, P.E.; Katsiapi, A.; Agatzini-Leonardou, S.

doi:10.1016/j.jhazmat.2010.01.059

Cited by 212 publications

(116 citation statements)

References 13 publications

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“…The XANES features of ZnO were the white line peak at around 9669 eV, a shoulder at around 9663 eV, and the additional structure at around 9679 eV. As for Zn 5 (CO 3 ) 2 (OH) 6 ， the white line peak was at around 9667 eV with shoulders at around 9665 eV and 9672 eV and the additional structure at around 9684 eV. While Zn K-edge XANES spectrum of ZnSiO 3 had two resolved peaks at around 9665 and 9668 eV.…”

Section: Zn Reference Compoundsmentioning

confidence: 99%

“…The variation of zinc species contained in regions with different zinc content indicated that chemical reactions between zinc species and other components occurred during the formation of BOF OG 2. For ZnFe 2 O 4 , it is one of the most common phases that can be found in zinc-containing steelmaking wastes, [6,7] such as electric arc furnace dust, basic oxygen furnace dust, and so on. In general, ZnFe 2 O 4 has a normal spinel structure which forms at high temperature and in oxidizing conditions.…”

Section: Basic Oxygen Furnace Og Sludge (Bof Og)mentioning

confidence: 99%

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Zn distribution and speciation in zinc-containing steelmaking wastes by synchrotron radiation induced μ-XRF and μ-XANES spectroscopy

Wang

Lu²

2013

J. Phys.: Conf. Ser.

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Section: Zn Reference Compoundsmentioning

confidence: 99%

Section: Basic Oxygen Furnace Og Sludge (Bof Og)mentioning

confidence: 99%

Zn distribution and speciation in zinc-containing steelmaking wastes by synchrotron radiation induced μ-XRF and μ-XANES spectroscopy

Wang

Lu²

2013

J. Phys.: Conf. Ser.

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“…Approximately 70 % of this waste is placed in landfills, while 30 % is used to zinc recover. The processing cost of 1 ton of EAFD in the USA, for example, is around $150-200 [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Reduction of electric arc furnace dust pellets by simulated reformed natural gas

Junca

Restivo

Oliveira

et al. 2016

J Therm Anal Calorim

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The purpose of this paper is to study the kinetic reaction of electric arc furnace dust pellets using a reducing gas simulating the reformed natural gas. The kinetic investigation was accomplished via forced stepwise isothermal analysis method. The tests were programmed in the range of 500-1000°C. It was used a reducing gas contained 25 % of CO and 75 % of H 2 . X-ray patterns were analyzed in order to understand the reduction process. The results show the reduction of electric arc furnace dust pellet occurs in three steps. At 550-650°C, the zinc ferrite is reduced to magnetite and zinc oxide, followed by the reduction of magnetite to wustite. Carbon deposition on the pellet surface was detected in this step, which impairs the kinetic analysis. In the range of 700-800°C, wustite is reduced to iron. It was determined a mixed control between nucleation and diffusion with E a of 89.2 kJ mol -1 . At 850-950°C, the main reaction is zinc oxide reduction to gaseous zinc. However, wustite reduction is also observed. The E a of 135.5 kJ mol -1 with a mixed control between diffusion and chemical reaction was detected.

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“…Zincite is considered as a problematic phase when it comes to leaching. When Zn is present in the form of zincite, it is easily leached/dissolved into the solution whereas zinc ferrite is less likely to cause leaching problems (Oustadakis, Tsakiridis, Katsiapi, & Agatzini-Leonardou, 2010). The XRD analysis revealed the presence of zinc ferrite in the S/S of EAFD; this explains the excellent immobilisation of Zn as illustrated in the leaching test results.…”

Section: Mineralogy and Micro-structurementioning

confidence: 80%

Comparison of mechanical and leaching behaviours of pulverised fuel ash/low-grade magnesium oxide-cement blended stabilised/solidified baghouse dust

Cubukcuoglu

Ouki

2017

European Journal of Environmental and Civil Engineering

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This paper investigates the leaching potential of heavy metals present in stabilised/solidified (S/S) electric arc furnace dust (EAFD). Granular leaching test results showed that Mo was effectively stabilised by Portland cement type I (CEMI) and MgO at 1:2:7 and 3:12:35 ratios. Monolithic leaching test results showed that pulverised fuel ash (PFA) stabilised Zn and Pb but not Mo and Cl. MgO was highly effective in reducing Zn leaching. X-ray diffraction analysis revealed the presence of zinc ferrite in the solidified EAFD products which explains the excellent immobilisation of Zn. The leaching mechanisms analysis demonstrated that few S/S samples exhibited a leaching behaviour dominated by diffusion with the majority displaying a leaching mode dominated by depletion. Although the monoliths' physical integrity was maintained, Pb, Cl and Mo were not effectively immobilised with PFA and MgO-based systems based on the current granular and monolith leaching test protocols.

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Hydrometallurgical process for zinc recovery from electric arc furnace dust (EAFD)

Cited by 212 publications

References 13 publications

Zn distribution and speciation in zinc-containing steelmaking wastes by synchrotron radiation induced μ-XRF and μ-XANES spectroscopy

Zn distribution and speciation in zinc-containing steelmaking wastes by synchrotron radiation induced μ-XRF and μ-XANES spectroscopy

Reduction of electric arc furnace dust pellets by simulated reformed natural gas

Comparison of mechanical and leaching behaviours of pulverised fuel ash/low-grade magnesium oxide-cement blended stabilised/solidified baghouse dust

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