Preparation of Metallic Iron Powder from Pyrite Cinder by Carbothermic Reduction and Magnetic Separation
The reduction and magnetic separation procedure of pyrite cinder in the presence of a borax additive was performed for the preparation of reduced powder. The effects of borax dosage, reduction temperature, reduction time and grinding fineness were investigated. The results show that when pyrite cind...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-04-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/6/4/88 |
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| author | Hongming Long Tiejun Chun Zhanxia Di Ping Wang Qingmin Meng Jiaxin Li |
| author_facet | Hongming Long Tiejun Chun Zhanxia Di Ping Wang Qingmin Meng Jiaxin Li |
| author_sort | Hongming Long |
| collection | DOAJ |
| description | The reduction and magnetic separation procedure of pyrite cinder in the presence of a borax additive was performed for the preparation of reduced powder. The effects of borax dosage, reduction temperature, reduction time and grinding fineness were investigated. The results show that when pyrite cinder briquettes with 5% borax were pre-oxidized at 1050 °C for 10 min, and reduced at 1050 °C for 80 min, with the grinding fineness (<0.44 mm) passing 81%, the iron recovery was 91.71% and the iron grade of the magnetic concentrate was 92.98%. In addition, the microstructures of the products were analyzed by optical microscope, scanning electron microscope (SEM), and mineralography, and the products were also studied by the X-ray powder diffraction technique (XRD) to investigate the mechanism; the results show that the borax additive was approved as a good additive to improve the separation of iron and gangue. |
| first_indexed | 2024-12-17T01:20:17Z |
| format | Article |
| id | doaj.art-629913108c1b4f7db91331e1606285f1 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-17T01:20:17Z |
| publishDate | 2016-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-629913108c1b4f7db91331e1606285f12022-12-21T22:08:51ZengMDPI AGMetals2075-47012016-04-01648810.3390/met6040088met6040088Preparation of Metallic Iron Powder from Pyrite Cinder by Carbothermic Reduction and Magnetic SeparationHongming Long0Tiejun Chun1Zhanxia Di2Ping Wang3Qingmin Meng4Jiaxin Li5School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, ChinaSchool of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, ChinaSchool of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, ChinaSchool of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, ChinaSchool of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, ChinaSchool of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, ChinaThe reduction and magnetic separation procedure of pyrite cinder in the presence of a borax additive was performed for the preparation of reduced powder. The effects of borax dosage, reduction temperature, reduction time and grinding fineness were investigated. The results show that when pyrite cinder briquettes with 5% borax were pre-oxidized at 1050 °C for 10 min, and reduced at 1050 °C for 80 min, with the grinding fineness (<0.44 mm) passing 81%, the iron recovery was 91.71% and the iron grade of the magnetic concentrate was 92.98%. In addition, the microstructures of the products were analyzed by optical microscope, scanning electron microscope (SEM), and mineralography, and the products were also studied by the X-ray powder diffraction technique (XRD) to investigate the mechanism; the results show that the borax additive was approved as a good additive to improve the separation of iron and gangue.http://www.mdpi.com/2075-4701/6/4/88pyrite cindercarbothermic reductionmagnetic separationmetallic iron powder |
| spellingShingle | Hongming Long Tiejun Chun Zhanxia Di Ping Wang Qingmin Meng Jiaxin Li Preparation of Metallic Iron Powder from Pyrite Cinder by Carbothermic Reduction and Magnetic Separation Metals pyrite cinder carbothermic reduction magnetic separation metallic iron powder |
| title | Preparation of Metallic Iron Powder from Pyrite Cinder by Carbothermic Reduction and Magnetic Separation |
| title_full | Preparation of Metallic Iron Powder from Pyrite Cinder by Carbothermic Reduction and Magnetic Separation |
| title_fullStr | Preparation of Metallic Iron Powder from Pyrite Cinder by Carbothermic Reduction and Magnetic Separation |
| title_full_unstemmed | Preparation of Metallic Iron Powder from Pyrite Cinder by Carbothermic Reduction and Magnetic Separation |
| title_short | Preparation of Metallic Iron Powder from Pyrite Cinder by Carbothermic Reduction and Magnetic Separation |
| title_sort | preparation of metallic iron powder from pyrite cinder by carbothermic reduction and magnetic separation |
| topic | pyrite cinder carbothermic reduction magnetic separation metallic iron powder |
| url | http://www.mdpi.com/2075-4701/6/4/88 |
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