Research on improving manganese ore yield in converter based on the less-slag smelting process.
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| Title: | Research on improving manganese ore yield in converter based on the less-slag smelting process. |
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| Authors: | Wang, Chengyi1,2 (AUTHOR) wangcy0615@163.com, Wu, Wei2 (AUTHOR), Jiang, Zhouhua1 (AUTHOR), Yang, Libin2 (AUTHOR) wangcy0615@163.com, Lin, Lu2 (AUTHOR), Zeng, Jiaqing2 (AUTHOR) |
| Source: | Metallurgical Research & Technology. 2025, Vol. 122 Issue 4, p1-9. 9p. |
| Subjects: | Manganese ores, Oxidation-reduction reaction, Manganese alloys, Chemical yield, Smelting |
| Abstract: | To further explore the reaction mechanisms of direct alloying using manganese ore and the factors influencing manganese ore yield in converter, this study re-established a thermodynamic reaction model for direct alloying with manganese ore by coupling the oxidation and reduction reactions of [Mn]. The model investigated the equilibrium relationships between (MnO) content in slag, (FeO) content, temperature, and manganese content under different carbon levels. Through thermodynamic calculations, it is concluded that: endpoint [C] content greater than 0.13%, (MnO) content in slag greater than 20%, (FeO) content between 9% and 15%, and endpoint temperature above 1620 °C, which can achieve [Mn] content in molten steel over 0.5%. Through hot-state experiments in a 500 kg medium-frequency induction furnace, achieving a manganese ore yield of 38.7–48.4% under laboratory experimental conditions. By using the double-slag process to improve the dephosphorization rate in the primary stage, less-slag control in the later stage and high-carbon tapping are achieved. By adding 5.5–10.5 kg/t of manganese ore during the decarburization period, a higher manganese ore yield of exceeding 50% is achieved, with carbon content at the endpoint reaching 0.16–0.22% and slag volume controlled between 40 and 60 kg/t. [ABSTRACT FROM AUTHOR] |
| Copyright of Metallurgical Research & Technology is the property of EDP Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 186646773 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Research on improving manganese ore yield in converter based on the less-slag smelting process. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wang%2C+Chengyi%22">Wang, Chengyi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wangcy0615@163.com</i><br /><searchLink fieldCode="AR" term="%22Wu%2C+Wei%22">Wu, Wei</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiang%2C+Zhouhua%22">Jiang, Zhouhua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Libin%22">Yang, Libin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> wangcy0615@163.com</i><br /><searchLink fieldCode="AR" term="%22Lin%2C+Lu%22">Lin, Lu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zeng%2C+Jiaqing%22">Zeng, Jiaqing</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Metallurgical+Research+%26+Technology%22">Metallurgical Research & Technology</searchLink>. 2025, Vol. 122 Issue 4, p1-9. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Manganese+ores%22">Manganese ores</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidation-reduction+reaction%22">Oxidation-reduction reaction</searchLink><br /><searchLink fieldCode="DE" term="%22Manganese+alloys%22">Manganese alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+yield%22">Chemical yield</searchLink><br /><searchLink fieldCode="DE" term="%22Smelting%22">Smelting</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: To further explore the reaction mechanisms of direct alloying using manganese ore and the factors influencing manganese ore yield in converter, this study re-established a thermodynamic reaction model for direct alloying with manganese ore by coupling the oxidation and reduction reactions of [Mn]. The model investigated the equilibrium relationships between (MnO) content in slag, (FeO) content, temperature, and manganese content under different carbon levels. Through thermodynamic calculations, it is concluded that: endpoint [C] content greater than 0.13%, (MnO) content in slag greater than 20%, (FeO) content between 9% and 15%, and endpoint temperature above 1620 °C, which can achieve [Mn] content in molten steel over 0.5%. Through hot-state experiments in a 500 kg medium-frequency induction furnace, achieving a manganese ore yield of 38.7–48.4% under laboratory experimental conditions. By using the double-slag process to improve the dephosphorization rate in the primary stage, less-slag control in the later stage and high-carbon tapping are achieved. By adding 5.5–10.5 kg/t of manganese ore during the decarburization period, a higher manganese ore yield of exceeding 50% is achieved, with carbon content at the endpoint reaching 0.16–0.22% and slag volume controlled between 40 and 60 kg/t. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Metallurgical Research & Technology is the property of EDP Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1051/metal/2025034 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 1 Subjects: – SubjectFull: Manganese ores Type: general – SubjectFull: Oxidation-reduction reaction Type: general – SubjectFull: Manganese alloys Type: general – SubjectFull: Chemical yield Type: general – SubjectFull: Smelting Type: general Titles: – TitleFull: Research on improving manganese ore yield in converter based on the less-slag smelting process. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wang, Chengyi – PersonEntity: Name: NameFull: Wu, Wei – PersonEntity: Name: NameFull: Jiang, Zhouhua – PersonEntity: Name: NameFull: Yang, Libin – PersonEntity: Name: NameFull: Lin, Lu – PersonEntity: Name: NameFull: Zeng, Jiaqing IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 22713646 Numbering: – Type: volume Value: 122 – Type: issue Value: 4 Titles: – TitleFull: Metallurgical Research & Technology Type: main |
| ResultId | 1 |
