Chemical, physical, structural and morphological characterization of the electric arc furnace dust.

Abstract

Electric arc furnace dust (EAFD) is a hazardous industrial waste generated in the collection of particulate material during steelmaking process via electric arc furnace. Important elements to the industry such as, Fe and Zn are the main ones in EAFD. Due to their presence, it becomes very important to know how these elements are combined before studying new technologies for its processing. The aim of this work was to carry out a chemical, physical, structural and morphological characterization of the EAFD. The investigation was carried out by using granulometry analysis, chemical analysis, scanning electron microscopy (SEM), energy dispersive spectroscopy via SEM (EDS), X-ray mapping analysis via SEM, X-ray diffraction (XRD) and Mössbauer spectroscopy. By XRD the following phases were detected: ZnFe(2)O(4), Fe(3)O(4), MgFe(2)O(4), FeCr(2)O (4), Ca(0.15)Fe(2.85)O(4), MgO, Mn(3)O(4), SiO(2) and ZnO. On the other hand, the phases detected by Mössbauer spectroscopy were: ZnFe(2)O(4), Fe(3)O(4), Ca(0.15)Fe(2.85)O(4) and FeCr(2)O(4). Magnesium ferrite (MgFe(2)O(4)), observed in the XRD pattern as overlapped peaks, was not identified in the Mössbauer spectroscopy analysis.

• Authors: Janaína G M S Machado, Feliciane Andrade Brehm, Carlos Alberto Mendes Moraes, Carlos Alberto Dos Santos, Antônio Cezar Faria Vilela, João Batista Marimon da Cunha
• Journal: Journal of hazardous materials (J Hazard Mater) Vol. 136 Issue 3 Pg. 953-60 (Aug 25 2006) ISSN: 0304-3894 [Print] Netherlands
• PMID: 16494997 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Dust
• Industrial Waste
• Iron
• Zinc
• Zinc Oxide

Topics

• Brazil
• Dust (analysis)
• Electricity
• Industrial Waste (analysis)
• Iron (chemistry)
• Metallurgy
• Microscopy, Electron, Scanning
• Particle Size
• Spectroscopy, Mossbauer
• X-Ray Diffraction
• Zinc (chemistry)
• Zinc Oxide (chemistry)