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Mineralization Behavior and Strengthening Mechanism of Limonitic Laterite Ore Sintering Process Enhanced by Calcined Lime Coating.

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Title: Mineralization Behavior and Strengthening Mechanism of Limonitic Laterite Ore Sintering Process Enhanced by Calcined Lime Coating.
Authors: Chen, Tiejun1,2 (AUTHOR), Wan, Junying1,2 (AUTHOR) jywan92@163.com, Hu, Mengjie3 (AUTHOR), Zhou, Xianlin1,2 (AUTHOR) xlzhou@wust.edu.cn, Luo, Yanhong1,2 (AUTHOR), Liu, Jiawen1,2 (AUTHOR)
Source: JOM: The Journal of The Minerals, Metals & Materials Society (TMS). Feb2024, Vol. 76 Issue 2, p875-884. 10p.
Subjects: Laterite, Sintering, Mineralization, Ores, Travertine, Gold ores
Abstract: The dehydration process of limonitic laterite ore consumes a lot of heat, which seriously affects the sintering performance and increases the solid fuel consumption of sintering. In this paper, the sintering performance and mechanism of limonitic laterite ore strengthened by a coating with calcined lime was studied. The results show that, when the coating proportion of calcined lime increased from 0% to 100%, the yield, tumble strength, and utilization coefficient of the sinter increased by 14.55%, 24.17%, and 20.43%, respectively, and the solid fuel consumption decreased by 13.47%, which means that CO2 emissions were significantly down. Mineralogical analysis shows that the microstructure of the sinter was significantly improved by the calcined lime coating. The structure of the sinter changed from large-pore thin-walled to small-pore thick-walled and the porosity decreased from 43.47% to 30.12%, which means that the sinter structure was more densified. The grain size of hercynite grew markedly and the content of silico-ferrite of calcium and aluminum (SFCA) in the liquid phase increased significantly, with the SFCA expanding from the outside to the inside, forming an interwoven structure with the spinel phase, the strength of the sinter was significantly improved. This study provides an effective technology for a high-quality sintering process of limonitic laterite ore. [ABSTRACT FROM AUTHOR]
Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) is the property of Springer Nature 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.)
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  Data: Mineralization Behavior and Strengthening Mechanism of Limonitic Laterite Ore Sintering Process Enhanced by Calcined Lime Coating.
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  Data: <searchLink fieldCode="AR" term="%22Chen%2C+Tiejun%22">Chen, Tiejun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wan%2C+Junying%22">Wan, Junying</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> jywan92@163.com</i><br /><searchLink fieldCode="AR" term="%22Hu%2C+Mengjie%22">Hu, Mengjie</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Xianlin%22">Zhou, Xianlin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> xlzhou@wust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Luo%2C+Yanhong%22">Luo, Yanhong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Jiawen%22">Liu, Jiawen</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22JOM%3A+The+Journal+of+The+Minerals%2C+Metals+%26+Materials+Society+%28TMS%29%22">JOM: The Journal of The Minerals, Metals & Materials Society (TMS)</searchLink>. Feb2024, Vol. 76 Issue 2, p875-884. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Laterite%22">Laterite</searchLink><br /><searchLink fieldCode="DE" term="%22Sintering%22">Sintering</searchLink><br /><searchLink fieldCode="DE" term="%22Mineralization%22">Mineralization</searchLink><br /><searchLink fieldCode="DE" term="%22Ores%22">Ores</searchLink><br /><searchLink fieldCode="DE" term="%22Travertine%22">Travertine</searchLink><br /><searchLink fieldCode="DE" term="%22Gold+ores%22">Gold ores</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The dehydration process of limonitic laterite ore consumes a lot of heat, which seriously affects the sintering performance and increases the solid fuel consumption of sintering. In this paper, the sintering performance and mechanism of limonitic laterite ore strengthened by a coating with calcined lime was studied. The results show that, when the coating proportion of calcined lime increased from 0% to 100%, the yield, tumble strength, and utilization coefficient of the sinter increased by 14.55%, 24.17%, and 20.43%, respectively, and the solid fuel consumption decreased by 13.47%, which means that CO2 emissions were significantly down. Mineralogical analysis shows that the microstructure of the sinter was significantly improved by the calcined lime coating. The structure of the sinter changed from large-pore thin-walled to small-pore thick-walled and the porosity decreased from 43.47% to 30.12%, which means that the sinter structure was more densified. The grain size of hercynite grew markedly and the content of silico-ferrite of calcium and aluminum (SFCA) in the liquid phase increased significantly, with the SFCA expanding from the outside to the inside, forming an interwoven structure with the spinel phase, the strength of the sinter was significantly improved. This study provides an effective technology for a high-quality sintering process of limonitic laterite ore. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) is the property of Springer Nature 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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      – SubjectFull: Laterite
        Type: general
      – SubjectFull: Sintering
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      – SubjectFull: Mineralization
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      – SubjectFull: Ores
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      – SubjectFull: Travertine
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      – SubjectFull: Gold ores
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      – TitleFull: Mineralization Behavior and Strengthening Mechanism of Limonitic Laterite Ore Sintering Process Enhanced by Calcined Lime Coating.
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            NameFull: Chen, Tiejun
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            NameFull: Wan, Junying
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              Text: Feb2024
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              Y: 2024
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