Clean Utilization of Limonite Ore by Suspension Magnetization Roasting Technology
As a typical refractory iron ore, the utilization of limonite ore with conventional mineral processing methods has great limitations. In this study, suspension magnetization roasting technology was developed and utilized to recover limonite ore. The influences of roasting temperature, roasting time,...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/2/260 |
| _version_ | 1797477702068862976 |
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| author | Jianping Jin Xinran Zhu Pengchao Li Yanjun Li Yuexin Han |
| author_facet | Jianping Jin Xinran Zhu Pengchao Li Yanjun Li Yuexin Han |
| author_sort | Jianping Jin |
| collection | DOAJ |
| description | As a typical refractory iron ore, the utilization of limonite ore with conventional mineral processing methods has great limitations. In this study, suspension magnetization roasting technology was developed and utilized to recover limonite ore. The influences of roasting temperature, roasting time, and reducing gas concentration on the magnetization roasting process were investigated. The optimal roasting conditions were determined to be a roasting temperature of 480 °C, a roasting time of 12.5 min, and a reducing gas concentration of 20%. Under optimal conditions, an iron concentrate grade of 60.12% and iron recovery of 91.96% was obtained. The phase transformation, magnetism variation, and microstructure evolution behavior were systematically analyzed by X-ray diffraction, vibrating sample magnetometer, and scanning electron microscope. The results indicated that hematite and goethite were eventually transformed into magnetite during the magnetization roasting process. Moreover, the magnetism of roasted products significantly improved due to the formation of ferrimagnetic magnetite in magnetization roasting. This study has implications for the utilization of limonite ore using suspension magnetization roasting technology. |
| first_indexed | 2024-03-09T21:21:26Z |
| format | Article |
| id | doaj.art-16ede94c2c58408788faca258a9f2203 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T21:21:26Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-16ede94c2c58408788faca258a9f22032023-11-23T21:19:20ZengMDPI AGMinerals2075-163X2022-02-0112226010.3390/min12020260Clean Utilization of Limonite Ore by Suspension Magnetization Roasting TechnologyJianping Jin0Xinran Zhu1Pengchao Li2Yanjun Li3Yuexin Han4School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaSchool of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaSchool of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaSchool of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaSchool of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaAs a typical refractory iron ore, the utilization of limonite ore with conventional mineral processing methods has great limitations. In this study, suspension magnetization roasting technology was developed and utilized to recover limonite ore. The influences of roasting temperature, roasting time, and reducing gas concentration on the magnetization roasting process were investigated. The optimal roasting conditions were determined to be a roasting temperature of 480 °C, a roasting time of 12.5 min, and a reducing gas concentration of 20%. Under optimal conditions, an iron concentrate grade of 60.12% and iron recovery of 91.96% was obtained. The phase transformation, magnetism variation, and microstructure evolution behavior were systematically analyzed by X-ray diffraction, vibrating sample magnetometer, and scanning electron microscope. The results indicated that hematite and goethite were eventually transformed into magnetite during the magnetization roasting process. Moreover, the magnetism of roasted products significantly improved due to the formation of ferrimagnetic magnetite in magnetization roasting. This study has implications for the utilization of limonite ore using suspension magnetization roasting technology.https://www.mdpi.com/2075-163X/12/2/260clean utilizationsuspension magnetization roastinglimonite orephase transformationmagnetism |
| spellingShingle | Jianping Jin Xinran Zhu Pengchao Li Yanjun Li Yuexin Han Clean Utilization of Limonite Ore by Suspension Magnetization Roasting Technology Minerals clean utilization suspension magnetization roasting limonite ore phase transformation magnetism |
| title | Clean Utilization of Limonite Ore by Suspension Magnetization Roasting Technology |
| title_full | Clean Utilization of Limonite Ore by Suspension Magnetization Roasting Technology |
| title_fullStr | Clean Utilization of Limonite Ore by Suspension Magnetization Roasting Technology |
| title_full_unstemmed | Clean Utilization of Limonite Ore by Suspension Magnetization Roasting Technology |
| title_short | Clean Utilization of Limonite Ore by Suspension Magnetization Roasting Technology |
| title_sort | clean utilization of limonite ore by suspension magnetization roasting technology |
| topic | clean utilization suspension magnetization roasting limonite ore phase transformation magnetism |
| url | https://www.mdpi.com/2075-163X/12/2/260 |
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