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Lixiviação de minério oxidado de ouro-cobre com tiossulfato de amônio
(Universidade Federal de Minas GeraisUFMG, 2004-06-23)
The present study aimed verify the application of ammoniacal thiosulfate leaching to a sample of an oxidized gold-copper ore with high cyanide soluble copper content (0.1%) in bench scale experiments. The leaching experiments ...
Processamento de aço Ferrita-Banita de alta resistência no laminador de tiras a quente da ARCELORMITAL TUBARÃO
(Universidade Federal de Minas GeraisUFMG, 2008-05-29)
Hot rolled ferrite bainite steels are able to balance high strenght and elongation, characteristic which match requirements of many applications on the automobilist industry. In order to support this sector, ARCELORMITAL ...
Estudo da reversão da austenita em aço inoxidável martensítico-ferrítico para aplicação no setor de óleo e gás
(Universidade Federal de Minas GeraisUFMG, 2014-02-28)
The microstructural evolution of dual-phase stainless steel with a martensitic-ferritic structure (AIMF) was investigated using in-situ high temperature X-ray diffraction. The tempering of this alloy is performed for ...
Modelo matemático de evolução microestrutural de fio-máquina microligado ao nióbio laminado a quente
(Universidade Federal de Minas GeraisUFMG, 2016-05-20)
Niobium microalloyed steels are very important for applications requiring high strength and toughness, as in the case of oil platforms, ships, pipelines, transmission towers, bridges and buildings. The presence of niobium ...
Efeito do envelhecimento entre passes durante a laminação a frio sobre as propriedades magnéticas do aço silício de grão orientado de alta permeabilidade
(Universidade Federal de Minas GeraisUFMG, 2012-09-28)
The effects of inter-pass ageing temperature during cold rolling on structure, magnetic properties and mechanical properties of high permeability grain oriented electrical steel was studied. The samples were processed in ...
Caracterização da cinética de reação e comportamento das cinzas dos carvões minerais injetados através das ventaneiras dos altos-fornosda CST
(Universidade Federal de Minas GeraisUFMG, 2006-04-06)
Pulverized coal injection (PCI) into blast furnaces became a very important technology in the last twenty years. One of the most relevant aspects for the success of this technology is the appropriate choice of the coals ...
Análise de inclusões não metálicas em aço por espectrometria de emissão óptica associada ao sistema Spark-DAT
(Universidade Federal de Minas GeraisUFMG, 2013-02-28)
The optical emission spectrometry is an analysis methodology of solid samples used by industries to control the chemical composition of their materials. In this technique, a spark is directed to the sample causing the ...
Simulação da etapa de desbaste por elementos finitos na laminação de longos
(Universidade Federal de Minas GeraisUFMG, 2010-07-21)
Technology investments to increase productivity and product quality has long been the focus of studies by companies given the high competitiveness. High surface and internal quality to the wire rods and bars is essential ...
Influência da taxa de deformação e da temperatura na ductilidade a quente do aço inoxidável duplex UNS S32304
(Universidade Federal de Minas GeraisUFMG, 2013-05-27)
Duplex stainless steels (DSS) have two ductile phases, i.e. ferrite and austenite, with a balance around 50% of each phase. The main advantage in comparison with other austenitic and ferrite stainless steels is the excellent ...
Avaliação da quitosana como recobrimento de papelão ondulado
(Universidade Federal de Minas GeraisUFMG, 2011-04-25)
The cardboard box has the function of protecting and storing the goods, providing they reach their final destination in satisfactory condition. The packaging market is growing rapidly and constantly evolving technologies ...