Modelamento matemático e simulação do pré-tratamento do gusa por injeção de fluxantes

• Ano de defesa: 1999
• Autor(a) principal: Itavahn Alves da Silva
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; Brasil; ENG - DEPARTAMENTO DE ENGENHARIA METALÚRGICA; Programa de Pós-Graduação em Engenharia Metalúrgica, Materiais e de Minas; UFMG
• Palavras-chave em Português: Engenharia metalúrgica; Modelagem matemática; Beneficiamento de minério; Ferro gusa
• Link de acesso: http://hdl.handle.net/1843/33827

In this work, a general mathematical model has been developed for desulphurization, dephosphorization and desiliconization reactions during pretreatment of pig iron in ladles through injection of flux powders. The model takes into account contribution of top slag, dispersed particles in the bath as well as particle adhering the gas bubbles to the refining process. Models predictions as to the influence of temperature, gas flow rate, particle size and composition of the powder used, injection rate, amount of carry-over slag, etc, have been analysed. Actual industrial data as well as data obtained through experiments in the laboratory have been used to verify some of the model predictions.