ISSN 2594-5300
52º Seminário de Aciaria, Fundição e Metalurgia de Não-Ferrosos — vol. 52, num.52 (2023)
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During the application of mold flux to the top of the mold at Continuous Casting process, wastes or leftovers are generated over time. They accumulate in places as the casting finishing, on the top of the mold, on the floor close to strands, and inside Flux Feeder silos. Their final disposition under the Brazilian legislation is the sanitary landfills. Thinking in a sustainable way for the wastes mentioned, a methodology has been created to collect, process, and give a final disposition to them, returning the recycled material to the Continuous Casting process as mold flux. This paper shows the development of a new mold flux with recycled material. Some laboratory analyzes was performed to compare standard and new flux, such as box test, boat test and viscosity. The Test Flux was produced with up to 15% of raw material from recycled mold flux and industrial tests have been performed with 53 ton of Test Flux with suitable operational and quality results in accordance with operational needs for the casting of low carbon steel grade at Usiminas. Finally, Test Flux has shown competitive advantages and improvements related to environmental issues at Usiminas.
During the application of mold flux to the top of the mold at Continuous Casting process, wastes or leftovers are generated over time. They accumulate in places as the casting finishing, on the top of the mold, on the floor close to strands, and inside Flux Feeder silos. Their final disposition under the Brazilian legislation is the sanitary landfills. Thinking in a sustainable way for the wastes mentioned, a methodology has been created to collect, process, and give a final disposition to them, returning the recycled material to the Continuous Casting process as mold flux. This paper shows the development of a new mold flux with recycled material. Some laboratory analyzes was performed to compare standard and new flux, such as box test, boat test and viscosity. The Test Flux was produced with up to 15% of raw material from recycled mold flux and industrial tests have been performed with 53 ton of Test Flux with suitable operational and quality results in accordance with operational needs for the casting of low carbon steel grade at Usiminas. Finally, Test Flux has shown competitive advantages and improvements related to environmental issues at Usiminas.
Palavras-chave
Mold Flux; Recycling; Continuous Casting
Mold Flux; Recycling; Continuous Casting
Como citar
Martins, Rodrigo Seara;
Rodrigues, Alberto César Soares;
Carvalho, Thiago Cesar Oliveira;
Moreira, Fabiano Abrahão;
Diego, Alexandra de Almeida;
Quinelato, Fernando.
REUSE OF MOLD FLUXES WASTE AS RAW MATERIAL FOR LOW CARBON STEEL FLUX AT USIMINAS
,
p. 815-827.
In: 52º Seminário de Aciaria, Fundição e Metalurgia de Não-Ferrosos,
São Paulo,
2023.
ISSN: 2594-5300
, DOI 10.5151/2594-5300-39404
