Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching

Detalhes bibliográficos
Autor(a) principal: Klug,Jeferson L.
Data de Publicação: 2022
Outros Autores: Medeiros,Samuel L. S., Caldas,Hilder, Bentes,Miguel, Becker,Helena
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000100316
Resumo: Abstract Considering the BSSF steelmaking slag generated in a Brazilian steelwork, it would be worth to separate iron and calcium from it, with the objective of increasing its iron content, or producing Fe2O3 and CaO by selective precipitation from cations in aqueous solution. In this way, materials could be produced and used in-house, e.g., sintering plant. This possibility was explored through acid leaching for an industrial sample. A possibility to increase concentration of iron of the slag is to leach it with a 2 mol.L-1 HCl solution; in this condition, 63.6% of the CaO is extracted from the slag to the aqueous solution, and Fe content of the slag increases from 27.4 to 37.1 wt%. Another possibility is to use HCl 5 mol.L-1; in this condition, 86.8% of the Fe and 90.7% of the CaO are transferred to the liquid solution. Then separation of iron and calcium can be achieved by selective precipitation: firstly, adding ammonia to precipitate Fe(OH)3, and then calcinating it to produce Fe2O3 (~ 200 °C); in the following, adding sodium carbonate to precipitate CaCO3, which in turn can be calcinated to produce CaO (~ 900 °C). In this way, Fe2O3 and CaO could be produced.
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spelling Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid LeachingSteelmakingBSSFBOF slagLD slagleachingslag valorizationAbstract Considering the BSSF steelmaking slag generated in a Brazilian steelwork, it would be worth to separate iron and calcium from it, with the objective of increasing its iron content, or producing Fe2O3 and CaO by selective precipitation from cations in aqueous solution. In this way, materials could be produced and used in-house, e.g., sintering plant. This possibility was explored through acid leaching for an industrial sample. A possibility to increase concentration of iron of the slag is to leach it with a 2 mol.L-1 HCl solution; in this condition, 63.6% of the CaO is extracted from the slag to the aqueous solution, and Fe content of the slag increases from 27.4 to 37.1 wt%. Another possibility is to use HCl 5 mol.L-1; in this condition, 86.8% of the Fe and 90.7% of the CaO are transferred to the liquid solution. Then separation of iron and calcium can be achieved by selective precipitation: firstly, adding ammonia to precipitate Fe(OH)3, and then calcinating it to produce Fe2O3 (~ 200 °C); in the following, adding sodium carbonate to precipitate CaCO3, which in turn can be calcinated to produce CaO (~ 900 °C). In this way, Fe2O3 and CaO could be produced.ABM, ABC, ABPol2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000100316Materials Research v.25 2022reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2021-0571info:eu-repo/semantics/openAccessKlug,Jeferson L.Medeiros,Samuel L. S.Caldas,HilderBentes,MiguelBecker,Helenaeng2022-05-11T00:00:00Zoai:scielo:S1516-14392022000100316Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2022-05-11T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching
title Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching
spellingShingle Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching
Klug,Jeferson L.
Steelmaking
BSSF
BOF slag
LD slag
leaching
slag valorization
title_short Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching
title_full Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching
title_fullStr Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching
title_full_unstemmed Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching
title_sort Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching
author Klug,Jeferson L.
author_facet Klug,Jeferson L.
Medeiros,Samuel L. S.
Caldas,Hilder
Bentes,Miguel
Becker,Helena
author_role author
author2 Medeiros,Samuel L. S.
Caldas,Hilder
Bentes,Miguel
Becker,Helena
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Klug,Jeferson L.
Medeiros,Samuel L. S.
Caldas,Hilder
Bentes,Miguel
Becker,Helena
dc.subject.por.fl_str_mv Steelmaking
BSSF
BOF slag
LD slag
leaching
slag valorization
topic Steelmaking
BSSF
BOF slag
LD slag
leaching
slag valorization
description Abstract Considering the BSSF steelmaking slag generated in a Brazilian steelwork, it would be worth to separate iron and calcium from it, with the objective of increasing its iron content, or producing Fe2O3 and CaO by selective precipitation from cations in aqueous solution. In this way, materials could be produced and used in-house, e.g., sintering plant. This possibility was explored through acid leaching for an industrial sample. A possibility to increase concentration of iron of the slag is to leach it with a 2 mol.L-1 HCl solution; in this condition, 63.6% of the CaO is extracted from the slag to the aqueous solution, and Fe content of the slag increases from 27.4 to 37.1 wt%. Another possibility is to use HCl 5 mol.L-1; in this condition, 86.8% of the Fe and 90.7% of the CaO are transferred to the liquid solution. Then separation of iron and calcium can be achieved by selective precipitation: firstly, adding ammonia to precipitate Fe(OH)3, and then calcinating it to produce Fe2O3 (~ 200 °C); in the following, adding sodium carbonate to precipitate CaCO3, which in turn can be calcinated to produce CaO (~ 900 °C). In this way, Fe2O3 and CaO could be produced.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000100316
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000100316
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2021-0571
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.25 2022
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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