EM - Escola de Minas
URI permanente desta comunidadehttp://www.hml.repositorio.ufop.br/handle/123456789/6
Notícias
A Escola de Minas de Ouro Preto foi fundada pelo cientista Claude Henri Gorceix e inaugurada em 12 de outubro de 1876.
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2 resultados
Resultados da Pesquisa
Item Quality evaluation of metallurgical coke produced with sawdust and different mixtures of coal.(2021) Carvalho, Lays Augusta Leal; Campos, Alex Milton Albergaria; Assis, Paulo SantosThe present research is dedicated to analyzing the addition of sawdust biomass, which is a carbonaceous raw material that may be used in coal blends for the production of metallurgical coke, preserving the required quality, with lower cost. The quality of metallurgical coke may be determined by the efficiency of its chemical, physical and thermal functions inside the blast furnace. For the production of hot metal, any modification in the constituents of the raw materials may have a direct influence on the blast furnace productivity and in the final quality of steel. From the thermal degradation analyzes such as coke reactivity index (CRI) and coke strength reaction (CSR), cold resistance (DI) and immediate analyzes, it may define the quality of metallurgical coke produced with biomass aiming at relating the parameters that interfere in the particularities of the material function in the blast furnace. Some results show that it is possible to use 2% of eucalyptus sawdust in the coal mixture.Item Potencial utilization of the husk from moringa oleifera seed in blast furnace injection.(2018) Campos, Alex Milton Albergaria; Novack, Kátia Monteiro; Assis, Paulo SantosMoringa oleifera is known as the tree of life for its numerous applications in the pharmaceutical, cosmetic and nutritional industries. The husk has some chemistry properties that are interesting to use in the energy generation. However, coal is the most used material for blast furnace injection, which is a non-renewable fossil fuel and emits a huge amount of greenhouse gases. The use of the husk from Moringa oleifera seeds have positive environmental and economic effects as renewable sources of fuel. This study aims at characterizing the husk from Moringa oleifera seed and evaluating its use as a pulverized material injection for the blast furnace. Initial results show that this material has a good combustion rate, high volatiles and hydrogen content. Despite the carbon content and calorific value been lower than coal, it is possible to use 40% of the husks in the injection with the coal mixture, reducing 30% of CO2 emissions in the injection process.