AUMENTO DAS PLANTAS CONSTEEL® NO MUNDO: FLEXIBILIDADE PARA A CARGA CONTÍNUA DE GUSA LÍQUIDO E SUCATA NO FORNO ELÉTRICO A ARCO AGORA NA SIDERURGIA BRASILEIRA
INCREASE OF CONSTEEL® PROJECTS IN THE WORLD: FLEXIBILITY FOR HOT METAL & SCRAP CONTINUOUS CHARGING IN EAF NOW IN THE BRAZILIAN INDUSTRY
Memoli, Francesco; Ferri, Mauro Bianchi; Freitas, Jorge Villares de
http://dx.doi.org/10.4322/tmm.00601010
Tecnol. Metal. Mater. Min., vol.6, n1, p.54-60, 2009
Resumo
Este trabalho descreve as últimas grandes aplicações do Consteel® ao redor do mundo e as perspectivas de utilização dessa reconhecida tecnologia na retomada do crescimento da siderurgia brasileira, com atenção especial à utilização de gusa líquido como parte principal da carga no forno. O processo FEA Consteel® representa a extensão das vantagens do processo de carga e fundição contínuas – típico em FEAs carregados com 100% DRI – para o carregamento de sucata. Isto promove o benefício adicional de um pré-aquecimento da carga "ambientalmente amigável", que ajuda a reduzir os requisitos de energia do processo. Ainda a possibilidade de injetar oxigênio em 100% do tempo de forno ligado faz do processo Consteel® a melhor opção para extrair o máximo de vantagens da carga de gusa líquido em um FEA. São descritos também detalhes do processo e peculiaridades tecnológicas desse tipo particular de operação.
Palavras-chave
Carga contínua, Sucata, Gusa líquido, Meio ambiente
Abstract
This paper describes the latest big Consteel® applications around the world and the perspectives of utilization of this recognized technology on the recovery of the growth of the Brazilian Steel Industry, with particular attention to the utilization of hot metal as main part of the charging mix. The Consteel® EAF process represents the extension of the advantages of continuous charge feeding and melting process – typical of EAFs charged with 100% DRI – to the charging of scrap. This with the additional benefit of an "environmentally friendly" preheating of the charge help the reducing energy requirements of the process. Moreover the possibility of injecting oxygen for 100% of the power-on time makes the Consteel® process the best option for taking most of the advantages coming from hot metal charging in an EAF. Process details and technological peculiarities of this particular type of operation are described.
Keywords
Continuous charge, Scrap, Hot metal, Environmental
Referências
1 FANUTTI, G.; POZZI, M. Environmental control and the Consteel process. Millennium Steel, p.105-10, 2004.
2 JEMIN, T.; XUEFENG W.; BIANCHI FERRI, M.; ARGENTA, P. Charging hot metal to the EAF using Consteel. Millennium Steel, p. 79-86, 2006.
3 BIRAT, J.P. A futures study analysis of the technological evolution of the EAF by 2010: Irsid-Usinor recherché. La Revue de Métallurgie-CIT, v. 97, n. 11, p. 1355-63, Nov. 2000.
4 WORRELL, E.; MARTIN, N.; PRICE, L. Energy efficiency and carbon dioxide emissions reduction opportunities in the U.S. iron and steel sector. Berkeley: Energy Analysis Department, University of California, 1999. p. 9-11, 20-9. (LBNL- 41724).
5 DE MIRANDA, U.; DI DONATO, A.; VOLPONI, V.; ZANUSSO, U.; ARGENTA, P.; POZZI, M. Scrap continuous charging to EAF. Luxembourg: European Commission, 2003. p. 1-41.
6 CONSIDINE, T.; JABLONOWSKY, C.; CONSIDINE, D. M. M.; RAO, P. G. The industrial ecology of steel. Final Report to Office of Biological and Environmental Research, US Department of Energy, Award No.DE-FGO2-97ER62496. University Park: The Pennsylvania State University, 2001. p. 15-16.
7 INTER-LABORATORY WORKING GROUP. Scenarios for a Clean Energy Future. Berkeley, CA: Lawrence Berkeley National Laboratory, 2000. (ORNL/CON-476 and LBNL-44029).
8 VALLOMY, J. A.; FALLON, C. Continuous Melting in EAF: a way to minimise flicker and harmonics. Metallurgical Plant and Technology International, v. 20, n. 4, p. 94-101, Ago. 1997.
9 FERRO, L.; PALMA, M.; MAIOLO, J.; MEMOLI, F. EAF Process control. Millennium Steel, p. 93-6, 2006.
10 POZZI, M.; MAIOLO, J.; MASOERO, D.; SCIPOLO, V.; VENERI, N. Operating results of Goodfellow EFSOP® at Riva. Verona, Italy: Millennium Steel, 2008, p. 89-93.
11 SANWU, W.; SHOUJUN, Z.; RISHENG, T. Application of hot metal charging for 90t Consteel- EAF at SGIS. In: CONSTEEL® INTERNATIONAL SYMPOSIUM, 2004, Beijing. Proceedings… [S.l.]: Metallurgical Industry Press, 2004. p. 39-41.
12 BRADLEY; J. G.; PAGE, H. L.; KEATIN, D. E.; BROWN, T.; GUZY, S. D. Wheeling-Pittsburgh steel: Mingo Junction plant: Revitalized with a new continuous steelmaking process. Iron & Steel Technology, 2005, v. 2, n. 6, p. 29-45, Jun. 2005.
13 FERRI, M.; MEMOLI, F. EAF Integration into the blast furnace route at Wheeling Pittsburgh. Millennium Steel, 2007, p. 92-4.
14 INSTITUTO BRASILEIRO DE SIDERURGIA. Siderurgia: investimentos e expansão da produção. Disponível em:. Acesso em: 15 fev. 2008.
2 JEMIN, T.; XUEFENG W.; BIANCHI FERRI, M.; ARGENTA, P. Charging hot metal to the EAF using Consteel. Millennium Steel, p. 79-86, 2006.
3 BIRAT, J.P. A futures study analysis of the technological evolution of the EAF by 2010: Irsid-Usinor recherché. La Revue de Métallurgie-CIT, v. 97, n. 11, p. 1355-63, Nov. 2000.
4 WORRELL, E.; MARTIN, N.; PRICE, L. Energy efficiency and carbon dioxide emissions reduction opportunities in the U.S. iron and steel sector. Berkeley: Energy Analysis Department, University of California, 1999. p. 9-11, 20-9. (LBNL- 41724).
5 DE MIRANDA, U.; DI DONATO, A.; VOLPONI, V.; ZANUSSO, U.; ARGENTA, P.; POZZI, M. Scrap continuous charging to EAF. Luxembourg: European Commission, 2003. p. 1-41.
6 CONSIDINE, T.; JABLONOWSKY, C.; CONSIDINE, D. M. M.; RAO, P. G. The industrial ecology of steel. Final Report to Office of Biological and Environmental Research, US Department of Energy, Award No.DE-FGO2-97ER62496. University Park: The Pennsylvania State University, 2001. p. 15-16.
7 INTER-LABORATORY WORKING GROUP. Scenarios for a Clean Energy Future. Berkeley, CA: Lawrence Berkeley National Laboratory, 2000. (ORNL/CON-476 and LBNL-44029).
8 VALLOMY, J. A.; FALLON, C. Continuous Melting in EAF: a way to minimise flicker and harmonics. Metallurgical Plant and Technology International, v. 20, n. 4, p. 94-101, Ago. 1997.
9 FERRO, L.; PALMA, M.; MAIOLO, J.; MEMOLI, F. EAF Process control. Millennium Steel, p. 93-6, 2006.
10 POZZI, M.; MAIOLO, J.; MASOERO, D.; SCIPOLO, V.; VENERI, N. Operating results of Goodfellow EFSOP® at Riva. Verona, Italy: Millennium Steel, 2008, p. 89-93.
11 SANWU, W.; SHOUJUN, Z.; RISHENG, T. Application of hot metal charging for 90t Consteel- EAF at SGIS. In: CONSTEEL® INTERNATIONAL SYMPOSIUM, 2004, Beijing. Proceedings… [S.l.]: Metallurgical Industry Press, 2004. p. 39-41.
12 BRADLEY; J. G.; PAGE, H. L.; KEATIN, D. E.; BROWN, T.; GUZY, S. D. Wheeling-Pittsburgh steel: Mingo Junction plant: Revitalized with a new continuous steelmaking process. Iron & Steel Technology, 2005, v. 2, n. 6, p. 29-45, Jun. 2005.
13 FERRI, M.; MEMOLI, F. EAF Integration into the blast furnace route at Wheeling Pittsburgh. Millennium Steel, 2007, p. 92-4.
14 INSTITUTO BRASILEIRO DE SIDERURGIA. Siderurgia: investimentos e expansão da produção. Disponível em:
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