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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.1991.tde-20032024-111947
Document
Author
Full name
Telmo de Castro e Silva Junior
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1991
Supervisor
Committee
Pimenta, Marcos de Mattos (President)
Capocchi, Jose Deodoro Trani
Greco, Clemente
Title in Portuguese
Análise térmica e simulação numérica do ciclo de panelas de aciaria.
Keywords in Portuguese
Engenharia mecânica
Abstract in Portuguese
As etapas que constituem o ciclo operacional de uma panela de aciaria foram analisadas através de um modelo simplificado que emprega fluxos unidimensionais de energia. Este modelo, que simula as etapas de aquecimento, transporte (panela vazia e cheia de aço-líquido), vazamento e lingotamento de uma panela de aciaria, permite a variação da potencia térmica do queimador, vazão e tipo de combustível, dados geométricos da panela, abertura da tampa, espessura e tipo do revestimento refratário, vazão e excesso de ar, espessura da camada de escoria e tempos relativos a cada etapa do processo. Através desse modelo pode-se estudar a diminuição da temperatura de fim de sopro de oxigênio do conversor face a um aquecimento adequado da panela e, avaliar a potencia térmica ótima dos queimadores e da relação ar/combustível. Estes estudos, por sua vez, implicarão em benefícios como: economia de oxigênio, aumento da produção de aço, redução do consumo de refratário e de combustível.
Title in English
Untitled in english
Keywords in English
Mechanical engineering
Abstract in English
The steps of an operational cycle of a steeimaking ladie were analised by a simplified model based on a unidimensional energy fluxes. This model, that simulates the heating up, prehested ladie transfer (empty ladie), converter tapping, filied up ladie (full ladie) and casting, allows the variation of heater termal power, flow and type of fuel, ladie geometry, cover slot, thickness and type of refractory, flow and excesso o fair, slag thickness and times for each process step. Through this model it can be studied the decrease of the temperature of the end of oxygen biowing of the converter caused by a correct ladie heating up and, avaliate the optimal heater termal power and the air/fuel rate. These studies will imply in benefits like: oxygen economy, steel production increase, reduction of refractory and fuel consumptions.
 
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Publishing Date
2024-03-20
 
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