Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Leonardo Martins da Silva"'
Autor:
Jose Adilson de Castro, Giulio Antunes de Medeiros, Leonardo Martins da Silva, Ivaldo Leão Ferreira, Marcos Flavio de Campos, Elizabeth Mendes de Oliveira
Publikováno v:
Metals, Vol 13, Iss 5, p 927 (2023)
A numerical simulation procedure is proposed for analyzing the partial replacement of pulverized coal injection by hydrogen, oxygen, and blast furnace gas (BFG) injections mixed with pulverized coal (PCI) within the tuyeres of large blast furnaces. T
Externí odkaz:
https://doaj.org/article/41124931856e434ab35548578064099c
Autor:
Márcio Teodoro Fernandes, Leonardo Martins da Silva, Patrícia Sousa Nilo Mendes, Anderson Vergílio de Queiroz, Jose Adilson de Castro, Claudinei dos Santos
Publikováno v:
Journal of Materials Research and Technology, Vol 11, Iss , Pp 887-895 (2021)
In this work, a model of the degradation of the Mg–Zn–Mn–Ca alloy system in SBF (Simulated Body Fluid) is proposed by applying the isoconversion method. Alloy ingots with nominal compositions of Mg–2Zn–0.2Mn–0.2Ca (wt.%) designed A.2 allo
Externí odkaz:
https://doaj.org/article/02ec29c630fc4eedb3f3e0be14800e9b
Autor:
Letyssia Niara De Godoi Pereira, Ronaldo Gomes de Castro Medeiros, Patrícia Guimarães Monteiro de Freitas, Camila Ferreira da Silva, Leonardo Martins da Silva, Ricardo Henriques Leal
Publikováno v:
Materials Research, Vol 25 (2022)
Abstract ADI are the result of graphite nodules and ausferrite microstructure (acicular ferrite + retained austenite). Over the past few years, ADI has become an important material for engineering due to its excellent mechanical properties (outstandi
Externí odkaz:
https://doaj.org/article/f503afd3ab274407a27fd9e3c0548b74
Autor:
Leonardo Martins da Silva, Ellen Cristine Giese, Giulio Antunes de Medeiros, Marcio Teodoro Fernandes, José Adilson de Castro
Publikováno v:
Materials Research, Vol 25 (2022)
Abstract With the growing industrialization, there is a constant increase in the world demand for iron ore, thus implying an increase in the volume of mining, resulting in the extraction of ores with higher levels of silicon, phosphorus and sulfur im
Externí odkaz:
https://doaj.org/article/7e770df5186949258a517b80db20928a
Autor:
Leonardo Martins da Silva, Tamara Fernandes Eugênio, Giulio Antunes de Medeiros, Ronaldo Gomes de Castro Medeiros, Patrícia Guimarães Monteiro de Freitas, José Adilson de Castro
Publikováno v:
Materials Research, Vol 25 (2022)
With the growing industrialization, there is a constant increase in the world demand for steel, causing an increase on extraction of low-grade iron ores, which bear high levels of impurities. A feasible alternative is the use of residues from steel r
Externí odkaz:
https://doaj.org/article/cf91755f7f5d488490841e2b76b606c9
Autor:
Jose Adilson de Castro, Leonardo Martins da Silva, Giulio Antunes de Medeiros, Elizabeth Mendes de Oliveira, Hiroshi Nogami
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 3, Pp 6001-6013 (2020)
One of the most challenging issues of the actual steelmaking industry is the mitigation of CO2 emissions. To cope with this target, the massive use of granulated biomass and fuel gas in the iron ore sintering process are a promising technological sol
Externí odkaz:
https://doaj.org/article/47a1213d66344e01813a887d0b4a49dd
Autor:
Giulio Antunes de Medeiros, Leonardo Martins da Silva, Márcio Teodoro Fernandes, Daniel Gomes de Souza dos Santos, José Adilson de Castro
Publikováno v:
Materials Research, Vol 24, Iss 6 (2021)
Abstract In recent decades, microwave energy has been successfully experimented for mining and metallurgy processes and is considered a promising new method for ironmaking. In this context, in the present work, self-reducing mixtures composed of fine
Externí odkaz:
https://doaj.org/article/4df36b81d9de468bb7c1240ff6eed892
Autor:
Leonardo Martins da Silva, Marisa Nascimento, Elizabeth Mendes de Oliveira, Anderson Vergilio de Queiroz, Marcio Teodoro Fernandes, Jose Adilson de Castro
Publikováno v:
Materials Research, Vol 23, Iss 6 (2020)
Abstract Demand for iron ore worldwide has been steadily increasing, thus implying an increase in the volume of mining resulting in the extraction of ores with higher levels of silicon, phosphorus and sulfur impurities. An extensively used alternativ
Externí odkaz:
https://doaj.org/article/259d43002da7447fa0750ca8b66d71a9
Autor:
Leonardo Martins da Silva, Marisa Nascimento, Elizabeth Mendes de Oliveira, Anderson Vergilio de Queiroz, Márcio Teodoro Fernandes, Jose Adilson de Castro
Publikováno v:
Materials Research, Vol 22, Iss 4 (2019)
Unlike the available mineral resources, the steelmaking processes have demanded raw material with lower phosphorus content to decrease the costs, energy use, and the residue generated within the steel plant. One alternative is to develop pretreatment
Externí odkaz:
https://doaj.org/article/383a8d022d68449e9ca52dcd00561c86
Autor:
Leonardo Martins da Silva, Marisa Nascimento, José Adlson de Castro, izabel de oliveira da mota
Publikováno v:
Holos, Vol 3, Iss 0, Pp 245-255 (2014)
O elemento fósforo quando encontrado nos aços em teores acima de 0,04% torna-se nocivo à qualidade do aço. No processo tradicional de remoção elemento fósforo contido no gusa, baixos teores somente são obtidos com uso massivo de oxigênio e a
Externí odkaz:
https://doaj.org/article/1c9540f2f46e4c939bb996a283099749