Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process.
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/10816 https://link.springer.com/article/10.1007%2Fs11663-018-1474-6 |
Resumo: | One of the main problems that affects Ruhrstahl-Heraeus (RH) degasser circulation rate is the obstruction of the gas-injection nozzles. This study aims to elucidate the effects of obstructions in quantity and location using a physical model that depicts 16 injection nozzles on the up-leg distributed symmetrically in 2 rings (8 nozzles/ring). We simulated six, symmetric and nonsymmetric, obstruction conditions to gas flow. The gas-flow rate was varied from 30 to 130 NL/min. The results for symmetric obstructions when the gas-flow rate is kept constant, indicates that the circulation rate in the equipment does not significantly change. However, when these obstructions are non-symmetric, the circulation rate varies drastically, even when the gas-flow rate is kept constant. The analysis of the experimental data generated from this study allowed to determine an equation for the circulation rate that takes into consideration the number and distribution of blocked nozzles. |
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Trindade, Luis CarlosPeixoto, Johne Jesus MolSilva, Carlos Antônio daBaston, Eduardo PradoLofrano, Renata Carolina ZanettiFrança, Alexandre Bôscaro2019-03-21T16:35:31Z2019-03-21T16:35:31Z2018TRINDADE, L. C. et al Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, v. 1, p. 1-7, 2018. Disponível em: <https://link.springer.com/article/10.1007%2Fs11663-018-1474-6>. Acesso em: 13 fev. 2019. 15431916http://www.repositorio.ufop.br/handle/123456789/10816https://link.springer.com/article/10.1007%2Fs11663-018-1474-6One of the main problems that affects Ruhrstahl-Heraeus (RH) degasser circulation rate is the obstruction of the gas-injection nozzles. This study aims to elucidate the effects of obstructions in quantity and location using a physical model that depicts 16 injection nozzles on the up-leg distributed symmetrically in 2 rings (8 nozzles/ring). We simulated six, symmetric and nonsymmetric, obstruction conditions to gas flow. The gas-flow rate was varied from 30 to 130 NL/min. The results for symmetric obstructions when the gas-flow rate is kept constant, indicates that the circulation rate in the equipment does not significantly change. However, when these obstructions are non-symmetric, the circulation rate varies drastically, even when the gas-flow rate is kept constant. The analysis of the experimental data generated from this study allowed to determine an equation for the circulation rate that takes into consideration the number and distribution of blocked nozzles.Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-8924http://www.repositorio.ufop.br/bitstream/123456789/10816/2/license.txt62604f8d955274beb56c80ce1ee5dcaeMD52ORIGINALARTIGO_InfluenceObstructionGas.pdfARTIGO_InfluenceObstructionGas.pdfapplication/pdf5538700http://www.repositorio.ufop.br/bitstream/123456789/10816/1/ARTIGO_InfluenceObstructionGas.pdf843b719fb41ff38ca6baebaa7af6ef9fMD51123456789/108162019-03-21 12:35:31.95oai:localhost: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ório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-03-21T16:35:31Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. |
title |
Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. |
spellingShingle |
Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. Trindade, Luis Carlos |
title_short |
Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. |
title_full |
Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. |
title_fullStr |
Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. |
title_full_unstemmed |
Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. |
title_sort |
Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. |
author |
Trindade, Luis Carlos |
author_facet |
Trindade, Luis Carlos Peixoto, Johne Jesus Mol Silva, Carlos Antônio da Baston, Eduardo Prado Lofrano, Renata Carolina Zanetti França, Alexandre Bôscaro |
author_role |
author |
author2 |
Peixoto, Johne Jesus Mol Silva, Carlos Antônio da Baston, Eduardo Prado Lofrano, Renata Carolina Zanetti França, Alexandre Bôscaro |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Trindade, Luis Carlos Peixoto, Johne Jesus Mol Silva, Carlos Antônio da Baston, Eduardo Prado Lofrano, Renata Carolina Zanetti França, Alexandre Bôscaro |
description |
One of the main problems that affects Ruhrstahl-Heraeus (RH) degasser circulation rate is the obstruction of the gas-injection nozzles. This study aims to elucidate the effects of obstructions in quantity and location using a physical model that depicts 16 injection nozzles on the up-leg distributed symmetrically in 2 rings (8 nozzles/ring). We simulated six, symmetric and nonsymmetric, obstruction conditions to gas flow. The gas-flow rate was varied from 30 to 130 NL/min. The results for symmetric obstructions when the gas-flow rate is kept constant, indicates that the circulation rate in the equipment does not significantly change. However, when these obstructions are non-symmetric, the circulation rate varies drastically, even when the gas-flow rate is kept constant. The analysis of the experimental data generated from this study allowed to determine an equation for the circulation rate that takes into consideration the number and distribution of blocked nozzles. |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018 |
dc.date.accessioned.fl_str_mv |
2019-03-21T16:35:31Z |
dc.date.available.fl_str_mv |
2019-03-21T16:35:31Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
TRINDADE, L. C. et al Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, v. 1, p. 1-7, 2018. Disponível em: <https://link.springer.com/article/10.1007%2Fs11663-018-1474-6>. Acesso em: 13 fev. 2019. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/10816 |
dc.identifier.issn.none.fl_str_mv |
15431916 |
dc.identifier.uri2.pt_BR.fl_str_mv |
https://link.springer.com/article/10.1007%2Fs11663-018-1474-6 |
identifier_str_mv |
TRINDADE, L. C. et al Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, v. 1, p. 1-7, 2018. Disponível em: <https://link.springer.com/article/10.1007%2Fs11663-018-1474-6>. Acesso em: 13 fev. 2019. 15431916 |
url |
http://www.repositorio.ufop.br/handle/123456789/10816 https://link.springer.com/article/10.1007%2Fs11663-018-1474-6 |
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eng |
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eng |
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