An efficient process to upgrade siderite ore by pre oxidation-magnetization roasting-magnetic separation-acid leaching
In this paper, a process of pre-oxidation and magnetization roasting followed by low-intensity magnetic separation and acid leaching (OMLA) was developed to separate and recover iron from siderite ore with high-magnesium and high-manganese. The pre-oxidation of siderite ore was performed in a tube f...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542201047X |
| _version_ | 1817999823752658944 |
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| author | Dingzheng Wang Jian Pan Deqing Zhu Zhengqi Guo Congcong Yang Zhuang Yuan |
| author_facet | Dingzheng Wang Jian Pan Deqing Zhu Zhengqi Guo Congcong Yang Zhuang Yuan |
| author_sort | Dingzheng Wang |
| collection | DOAJ |
| description | In this paper, a process of pre-oxidation and magnetization roasting followed by low-intensity magnetic separation and acid leaching (OMLA) was developed to separate and recover iron from siderite ore with high-magnesium and high-manganese. The pre-oxidation of siderite ore was performed in a tube furnace at 800 °C for 45 min, improving the iron recovery by 6%. The effects of conditions of magnetization roasting, magnetic separation and acid leaching on the separation indices were studied. Under the optimum parameters, the iron concentrate, assaying 62.01% Fe, 8.74% MgO, 2.41% MnO with comprehensive recovery of 96.9%, were obtained through the OMLA process. Phase and microstructure transformation of the samples in OMLA process were investigated by SEM-EDS. The results indicated that pre-oxidation of siderite ore can cause porous structure of raw sample, improving reduction efficiency in magnetization roasting process. Most of gangue minerals (dolomite, ankerite, quartz and muscovite) could be removed in the process while Mn and part of Mg which existed in the iron oxides in the form of isomorphous substitution throughout the OMLA process would remain in the final concentrate. |
| first_indexed | 2024-04-14T03:14:14Z |
| format | Article |
| id | doaj.art-e839c0f72a6549a48c8e05be339f7600 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-14T03:14:14Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-e839c0f72a6549a48c8e05be339f76002022-12-22T02:15:31ZengElsevierJournal of Materials Research and Technology2238-78542022-07-011942964307An efficient process to upgrade siderite ore by pre oxidation-magnetization roasting-magnetic separation-acid leachingDingzheng Wang0Jian Pan1Deqing Zhu2Zhengqi Guo3Congcong Yang4Zhuang Yuan5School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, Hunan, PR ChinaCorresponding author.; School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, Hunan, PR ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, Hunan, PR ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, Hunan, PR ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, Hunan, PR ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, Hunan, PR ChinaIn this paper, a process of pre-oxidation and magnetization roasting followed by low-intensity magnetic separation and acid leaching (OMLA) was developed to separate and recover iron from siderite ore with high-magnesium and high-manganese. The pre-oxidation of siderite ore was performed in a tube furnace at 800 °C for 45 min, improving the iron recovery by 6%. The effects of conditions of magnetization roasting, magnetic separation and acid leaching on the separation indices were studied. Under the optimum parameters, the iron concentrate, assaying 62.01% Fe, 8.74% MgO, 2.41% MnO with comprehensive recovery of 96.9%, were obtained through the OMLA process. Phase and microstructure transformation of the samples in OMLA process were investigated by SEM-EDS. The results indicated that pre-oxidation of siderite ore can cause porous structure of raw sample, improving reduction efficiency in magnetization roasting process. Most of gangue minerals (dolomite, ankerite, quartz and muscovite) could be removed in the process while Mn and part of Mg which existed in the iron oxides in the form of isomorphous substitution throughout the OMLA process would remain in the final concentrate.http://www.sciencedirect.com/science/article/pii/S223878542201047XSiderite oreMagnetization roastingMagnetic separationAcid leachingPre-oxidationManganese |
| spellingShingle | Dingzheng Wang Jian Pan Deqing Zhu Zhengqi Guo Congcong Yang Zhuang Yuan An efficient process to upgrade siderite ore by pre oxidation-magnetization roasting-magnetic separation-acid leaching Journal of Materials Research and Technology Siderite ore Magnetization roasting Magnetic separation Acid leaching Pre-oxidation Manganese |
| title | An efficient process to upgrade siderite ore by pre oxidation-magnetization roasting-magnetic separation-acid leaching |
| title_full | An efficient process to upgrade siderite ore by pre oxidation-magnetization roasting-magnetic separation-acid leaching |
| title_fullStr | An efficient process to upgrade siderite ore by pre oxidation-magnetization roasting-magnetic separation-acid leaching |
| title_full_unstemmed | An efficient process to upgrade siderite ore by pre oxidation-magnetization roasting-magnetic separation-acid leaching |
| title_short | An efficient process to upgrade siderite ore by pre oxidation-magnetization roasting-magnetic separation-acid leaching |
| title_sort | efficient process to upgrade siderite ore by pre oxidation magnetization roasting magnetic separation acid leaching |
| topic | Siderite ore Magnetization roasting Magnetic separation Acid leaching Pre-oxidation Manganese |
| url | http://www.sciencedirect.com/science/article/pii/S223878542201047X |
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