CHARACTERIZATION OF A WEATHERED STEELMAKING FLUE DUST
Palavras-chave:
Flue dust, characterization, steelmaking waste , steelmaking sludgeResumo
Flue dust is as waste that can be obtained in the steelmaking process employing a LD converter as well an electric arc furnace. Several useful elements such as Fe and Zn can be found in this type of waste. Finding the best technology for processing this kind of material pass by knowing detailed how these elements are formed and combined. This study aimed to investigate the physical and chemical characteristics of a flue dust steelmaking sample, after weathering. The investigation was carried out by using X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, chemical analysis, particle size analysis, pycnometry and surface area measurement (BET). The waste studied, showed the predominance of wustite, magnetite, hematite, franklinite, graphite, calcite and quartz. Chemical analysis has pointed to 49.33 % Fe, 9.17 % CaO, 1.94 % MgO, 1.06 % Al2O3 contents. The median diameter (d50) was 44.04 µm, density was 2,990.0 kg/m³ and surface area was calculated to be 15,010.0 m²/kg. In the XRD pattern was observed peak overlapping, which was minimize employing previously a double leaching with 16.8 % mass concentration of hydrochloric acid solution.
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ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS – ABNT. NBR 10004 – Resíduos sólidos – classificação. Rio de Janeiro.
APOCALYPSE, F. A. Utilização de métodos de análise na caracterização química e estrutural de compostos de zinco em resíduos de forno elétrico a arco em processos siderúrgicos. Belo Horizonte: Universidade Federal de Minas Gerais, 2016.
BREHM, F.; GRAFFITTI, D.; MORAES, C. A. & VILELA, A. Desenvolvimento de um método para digestão de pós de aciaria elétrica com vistas à caracterização química do resíduo. Congresso em ciência de materiais do Mercosul, Anais do 1° Sulmat, Joinville. SC. 448-457, 2002.
CRUELLS, M., ROCA, A., & NÚN?Z, C. Electric arc furnace flue dusts: characterization and leaching with sulphuric acid. Hydrometallurgy, 31(3), 213–231,1992. DOI:10.1016/0304-386x(92)90119-k.
KARON, S. Easy Plot — Scientific Graphing and Data Analysis, 2014. Available online at http://www.spiralsoftware.com/EPManual.pdf.
LAFOREST, G., & DUCHESNE, J. Characterization and leachability of electric arc furnace dust made from remelting of stainless steel. Journal of Hazardous Materials, 135(1-3), 156–164, 2006. DOI: 10.1016/j.jhazmat.2005.11.037.
MACHADO, J.G.; BREHM, F.A.; MORAES, C.A.; SANTOS, C.D.; VILELA, A.C.; CUNHA, J.B. Chemical, physical, structural and morphological characterization of the electric arc furnace dust. Journal of Hazardous Materials, 953-960, 2006. DOI: 10.1016/j.jhazmat.2006.01.044.
MAJUSTE, D., & MANSUR, M. B. Characterization of the fine fraction of the argon oxygen decarburization with lance (AOD-L) sludge generated by the stainless steelmaking industry. Journal of Hazardous Materials, 153(1-2), 89–95. 2008 DOI: 10.1016/j.jhazmat.2007.08.028.
NYRENDA, R.L. The processing of Steelmaking Flue-Dust: A Review. Minerals Engineering, 7-11, 1991. DOI: 10.1016/0892-6875(91)90080-F.
PEREIRA, M.J.; LIMA, M.M.F.; LIMA, R.M.F. Calcination and characterisation studies of a Brazilian manganese ore tailing. International Journal of Mineral Processing, 131 (2014), pp. 26-30.
TAKANO, C.; CAPOCCHINI, J.D.; NASCIMENTO, R.C.; MOURÃO, M.B.; LENZ, G.; SANTOS, D.M. A reciclagem de resíduos siderúrgicos sólidos. São Paulo: Universidade de São Paulo. 2000.
SARKAR, S.; MAZUMBER, D. Solid Waste Management in Steel Industry - Challenges and Oportunities. Internacional Journal of Economics and Management Engineering, 978-981, 2015. DOI: 10.5281/zenodo.1100246.
SILVA, M. C. da. Reciclagem de pó de aciaria elétrica como matéria prima na fabricação de materiais cerâmicos argilosos: controle das emissões atmosféricas de zinco (tese). Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais, Porto Alegre, 2006. 126 p.
SOFILI, T. Characterization of steel mill electric-arc furnace dust. Journal of Hazardous Materials, 109(1-3), 59–70, 2004. DOI: 10.1016/j.jhazmat.2004.02.032.
VIEIRA, C. M. F., ANDRADE, P. M., MACIEL, G. S., VERNILLI, F., & MONTEIRO, S. N. Incorporation of fine steel sludge waste into red ceramic. Materials Science and Engineering: A, 427(1-2), 142–147, 2006. DOI: 10.1016/j.msea.2006.04.040.
XIA, D.K.; PICKLES, C.A. Microwave caustic leaching of electric arc furnace dust, Minerals Engineering. 13, 79–94, 2000. DOI: 10.1016/S0892-6875(99)00151-X.
WU, L-M. Characteristics of steelmaking flue dust. Ironmaking & steelmaking. 1999; 26(5): 372–7. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-2793. Accessed: February 16, 2021.
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