ORALS

SESSION: IronWedAM-R3	Poveromo International Symposium (8th Intl. Symp. on Advanced Sustainable Iron & Steel Making)
Wed. 30 Nov. 2022 / Room: Arcadia 1
Session Chairs: Mery-Cecilia Gomez Marroquin; Paulo Assis; Session Monitor: TBA

11:55: [IronWedAM02] OS Keynote
THE FUTURE OF THE STEEL INDUSTRY WITH LESS GREENHOUSE GASES EMISSIONS
Alex Campos¹ ; Ana Laura Nascimento² ; Paulo Assis³ ; Jorge Murta² ; ¹Federal University of Ouro Preto, Ouro Branco, Brazil; ²Federal University of Ouro Preto, Ouro Preto, Brazil; ³UFOP, Ouro Preto, Brazil;
Paper Id: 155 [Abstract]

The steel industry is known for the large amount of greenhouse gases emitted in the atmosphere in its processes, mainly for the burning of fossil fuels. The sector is responsible for about 10% of all CO2 emitted in the world, which 70% comes from the burning of coal and coke in the blast furnace. In the short term, we have as reality the use of electric steelworks, it means, the production of steel from scrap and other inputs. Electric steelworks are already commonly known and have the advantage that is not necessary burning fossil fuels. However, a high demand for electricity is necessary, which in some countries has a high cost, making the business unfeasible. The use of hydrogen in the production of primary iron has been studied and is pointed as an interesting alternative, although the cost of obtaining it and the forms of use need to be better defined making it a long-term possibility. Another possibility is the use of biomass in the processes, that has been studied and in some small blast furnaces it is used, mainly in Brazil. This is an alternative that can be envisioned in some countries once there is availability of these materials, requiring only some adaptations of processes for implementation. Therefore, this work comes with the purpose of showing some alternatives for the future of steel companies with the increase of emission restrictions, focusing mainly on a short to medium term solution that are biomasses.

SESSION: NanotechnologyWedAM-R7	International Symposium on Nanotechnology for Sustainable Development
Wed. 30 Nov. 2022 / Room: Andaman 2
Session Chairs: Paulo Assis; ATANU NASKAR; Session Monitor: TBA

11:30: [NanotechnologyWedAM01] OL
EVALUATION OF THE USE OF DRY DOORS IN PLATE REHEATING OVENS FOR HOT STRIP STEEL LAMINATION
Lays Augusta Leal Carvalho¹ ; Alex Campos² ; Paulo Assis³ ; ¹UFOP, Vitória, Brazil; ²Federal University of Ouro Preto, Ouro Branco, Brazil; ³UFOP, Ouro Preto, Brazil;
Paper Id: 173 [Abstract]

The use of refractory materials is fundamental in steel mills due to the equipment used in the process of working under high temperatures [1]. For this equipment to perform well and mitigate damage, it is necessary to be coated with appropriate refractory materials so that they are thermally insulated. When rolling hot strips, plate reheating ovens generally use refractories (walls, ceilings, sills, doors, stringers, poles, etc.) [2]. The detonating doors of these ovens require special attention because they are in an aggressive, high-temperature environment [3]. The dry door is an alternative to replace refrigerated doors, to eliminate the recurrent problems of these, with leaks and frequent maintenance, and increase the life of the deformation doors. The use of dry door in reheating ovens of Arcelor Mittal has been advantageous, a study on its application and lifetime shows the efficiency of this port concerning others used.

References:
[1]ABCERAM. Associação Brasileira de Cerâmica. Disponível em: <https://abceram.org.br/definicao-e-classificacao/>. Acesso em: 07 de abril de 2020.
[2]ALVES, G.S.; DUARTE, A.K.; LINS, V. de F.C.; SILVA, D.G. de M. Metodologia para previsão da vida útil de âncoras refratárias aplicadas em fornos de reaquecimento. Matéria (Rio J.). v.21, n.4, pp.906-920, 2016. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762016000400906&lng=en&nrm=iso>.
[3]NETO, E.F.M. Análise da Confiabilidade do Laminador de Tiras a Quente da Arcelor Mittal Tubarão. 2017. 43f. Monografia de Especialização (Especialização em Engenharia da Confiabilidade) – Departamento Acadêmico de Eletrotécnica, Universidade Tecnológica Federal do Paraná. Curitiba, 2017.