Otimização do carregamento dos fornos de produção de aço (convertedores LD) minimizando custo

Abstract

Due to the low domestic demand and imported steel lowest price invasion, compounded by high production costs of local steel plants mainly due to high energy costs, taxes and raw materials is increasing pressure to reduce production and cost optimization the various production processes of domestic steel plants. In this context, this study aimed, through optimization tools to improve the company's competitiveness by optimizing the loading of the steel plant furnace through the provision of charge or set of lower cost, with no significant negative impacts on the steelmaking process in LD converters. In the proposed model is possible to set a lower cost steel, optimizing the different types of metallic charge being charged in the furnace, observing the metallurgical and operational constraints. The computational results indicate that the lowest cost is in the direction of maximizing the loading of solid metal (scraps) instead of liquid metal (pig iron). Furthermore, impacts on the cost provided by modifying the chemical composition, for example, silicon in a pig iron were observed.