Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching
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...
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2022-05-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000100316&tlng=en |
| _version_ | 1818008754730303488 |
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| author | Jeferson L. Klug Samuel L. S. Medeiros Hilder Caldas Miguel Bentes Helena Becker |
| author_facet | Jeferson L. Klug Samuel L. S. Medeiros Hilder Caldas Miguel Bentes Helena Becker |
| author_sort | Jeferson L. Klug |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-14T05:34:14Z |
| format | Article |
| id | doaj.art-ed7d0749de9b4aa191796542f0e4c008 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-14T05:34:14Z |
| publishDate | 2022-05-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-ed7d0749de9b4aa191796542f0e4c0082022-12-22T02:09:43ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392022-05-012510.1590/1980-5373-mr-2021-0571Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid LeachingJeferson L. Klughttps://orcid.org/0000-0003-0992-9708Samuel L. S. MedeirosHilder CaldasMiguel BentesHelena BeckerAbstract 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000100316&tlng=enSteelmakingBSSFBOF slagLD slagleachingslag valorization |
| spellingShingle | Jeferson L. Klug Samuel L. S. Medeiros Hilder Caldas Miguel Bentes Helena Becker Separation of Iron and Calcium from a BSSF Steelmaking Slag Through Acid Leaching Materials Research Steelmaking BSSF BOF slag LD slag leaching slag valorization |
| title | 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_short | 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 |
| topic | Steelmaking BSSF BOF slag LD slag leaching slag valorization |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000100316&tlng=en |
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