Chemical, physical, structural and morphological characterization of the electric arc furnace dust.
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.
Laboratório de Siderurgia/LASID, Universidade Federal do Rio Grande do Sul, UFRGS/PPGEM Centro de Tecnologia, AV. Bento Gonçalves 9500 CEP, 91501-970 Caixa postal 15021, Porto Alegre, RS, Brazil. jana@ct.ufrgs.br
Janaína G M S
JG
Machado
Feliciane Andrade
FA
Brehm
Carlos Alberto Mendes
CA
Moraes
Carlos Alberto Dos
CA
Santos
Antônio Cezar Faria
AC
Vilela
João Batista Marimon da
JB
Cunha
D001938:Brazil; D004391:Dust / Q000032:analysis*; D004560:Electricity; D007220:Industrial Waste / Q000032:analysis*; D007501:Iron / Q000737:chemistry; D008669:Metallurgy; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D015204:Spectroscopy, Mossbauer; D014961:X-Ray Diffraction; D015032:Zinc / Q000737:chemistry; D015034:Zinc Oxide / Q000737:chemistry
D004391:Dust; D007220:Industrial Waste; D007501:Iron; D015032:Zinc; D015034:Zinc Oxide