Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Felipe Fardin Grillo"'
Autor:
Flaviani M. Marchesi, Estéfano Aparecido Vieira, Jean C. D. de Paola, Eduardo Junca, Felipe Fardin Grillo, José Roberto Oliveira
Publikováno v:
REM: International Engineering Journal, Vol 76, Iss 4, Pp 335-343 (2023)
Abstract Fluorspar (CaF2) is the most used flux in hot metal desulfurizing mixtures. However, its use can cause refractory wear and environmental contamination, prompting research efforts to develop alternative desulfurizing mixtures. This study aims
Externí odkaz:
https://doaj.org/article/e6ae11099f444c14b3a502e483e0acad
Autor:
Lucio Rosso Neto, Carlos Henrique Borgert, José Roberto de Oliveira, Felipe Fardin Grillo, Gabriel Valério Pereira Manfredi, Jorge Luis Coleti, Denise Crocce Romano Espinosa, Jorge Alberto Soares Tenório, David Batista Gesuino, Tiago Elias Allievi Frizon, Eduardo Junca
Publikováno v:
Materials Research, Vol 26 (2023)
The use of alternative raw materials is essential for establishing a circular economy in the mineral and ironmaking sectors. Therefore, this study investigates the potential of lime sludge as fluxing material during pelletization and proposes an alte
Externí odkaz:
https://doaj.org/article/d5e56020e1314f1cb40eb3cac71396b8
Autor:
Raphael Mariano de Souza, Vinícios Andreatta, Inamara Amanda Souza Santos, Eduardo Junca, Felipe Fardin Grillo, José Roberto de Oliveira
Publikováno v:
Journal of Materials Research and Technology, Vol 15, Iss , Pp 5307-5315 (2021)
During the process of dephosphorization, the main solid phases formed in slag are dicalcium silicate (2CaO.SiO2), tricalcium silicate (3CaO.SiO2) and tricalcium phosphate (3CaO.P2O5). The last one is the main responsible for phosphorous removal. The
Externí odkaz:
https://doaj.org/article/7b596693c1e245caa44b23374f5080d9
Autor:
Raphael Mariano de Souza, Márcia Spelta de Oliveira, José Roberto de Oliveira, Eduardo Junca, Victor Bridi Telles, Felipe Fardin Grillo
Publikováno v:
Journal of Materials Research and Technology, Vol 14, Iss , Pp 2257-2266 (2021)
Currently in steelmaking, “inclusions engineering” has occupied a relevant space in terms of improvements in processes and products. This is because these compounds, depending on the chemical nature, morphology, physical state, size and distribut
Externí odkaz:
https://doaj.org/article/28e290bbae104485b692d736d73fb18a
Autor:
Elton Volkers do Espírito Santo, Sábata Marla Reis Durães Oliveira, Caio Vaccari Silva, Felipe Fardin Grillo, José Roberto de Oliveira
Publikováno v:
REM: International Engineering Journal, Vol 74, Iss 4, Pp 443-450 (2021)
Abstract Over the last decades, the capability of a desulfurizing mixture to remove sulfur has been widely studied. The hot metal desulfurization efficiency represents the percentage of sulfur removed from the bath and the development of parameters t
Externí odkaz:
https://doaj.org/article/ad1d9c94084f41f3af8935190f3b1652
Autor:
Caio Vaccari Silva, Felipe Costa Broseghini, Eduardo Junca, Felipe Fardin Grillo, José Roberto de Oliveira
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 5, Pp 10529-10536 (2020)
The properties of the mixtures used in hot metal dephosphorization, such as solid and liquid fraction phases, CaO and FeO activity and viscosity, are determinant for the process efficiency. The influence of these properties on hot metal dephosphoriza
Externí odkaz:
https://doaj.org/article/c091c8fd33354bfaa4ce6d32a5232fb1
Autor:
Rodrigo de Oliveira Pezzin, Anna Paula Littig Berger, Felipe Fardin Grillo, Eduardo Junca, Henrique Silva Furtado, José Roberto de Oliveira
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 1, Pp 838-846 (2020)
Normally, CaO is used in steel desulfurization in slags from the systems: CaO–CaF2, CaO–Al2O3, and CaO–SiO2. Among these, the CaO–CaF2 slags are more efficient. This paper uses computational thermodynamics to study the influence of solid and
Externí odkaz:
https://doaj.org/article/633612d5c960432f8448730ebd0205ba
Autor:
Anna Paula Littig Berger, Rodrigo de Oliveira Pezzin, Felipe Fardin Grillo, Eduardo Junca, Henrique Silva Furtado, José Roberto de Oliveira
Publikováno v:
Journal of Materials Research and Technology, Vol 8, Iss 5, Pp 4651-4658 (2019)
Steel desulfurization mixtures of the CaO-Al2O3 system are the most industrially used. These mixtures require an amount of solid CaO to keep them always saturated in CaO. The aim of this paper is to study the influence of adding CaF2 and Na2O on the
Externí odkaz:
https://doaj.org/article/0865d7f8738047849aab881a414ca657
Autor:
Felipe Fardin Grillo, Jorge Luís Coleti, José Roberto de Oliveira, Eduardo Junca, Rüdiger Deike, Denise Crocce Romano Espinosa
Publikováno v:
Materials Research, Vol 20, Iss 5, Pp 1230-1237 (2017)
The aim of this work was to study the use of slags to desulfurize cast iron. It was proposed to use alumina instead of fluorspar. In addition, marble waste was used instead of lime. Simulations applying Thermo-Calc® software were carried out in orde
Externí odkaz:
https://doaj.org/article/5bb3a4afbdd94b74a6400d1e1fb3bb0e
Autor:
Dryelle Nazaré Oliveira do Nascimento, Adriano Reis Lucheta, Maurício César Palmieri, Andre Luiz Vilaça do Carmo, Patricia Magalhães Pereira Silva, Rafael Vicente de Pádua Ferreira, Eduardo Junca, Felipe Fardin Grillo, Joner Oliveira Alves
Publikováno v:
Metals, Vol 9, Iss 1, p 81 (2019)
The use of biotechnology to explore low-grade ore deposits and mining tailings is one of the most promising alternatives to reduce environmental impacts and costs of copper extraction. However, such technology still depends on improvements to be full
Externí odkaz:
https://doaj.org/article/004c00d0b24a43e7863d2e396b702490