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Magnetizing Roasting with Additive Activation and Low Intensity Magnetic Separation for Iron Recovery from Red Mud
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Jiao HAO1, Run MAO1, Chaojie HU1, Hanquan ZHANG1, 2, Mingxia LIU1, 2
Mining and Metallurgical Engineering | 2023, 43(2) : 91 - 96
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Mining and Metallurgical Engineering | 2023, 43(2): 91-96
• METALLURGY •
Magnetizing Roasting with Additive Activation and Low Intensity Magnetic Separation for Iron Recovery from Red Mud
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Jiao HAO1, Run MAO1, Chaojie HU1, Hanquan ZHANG1, 2, Mingxia LIU1, 2
Affiliations
  • 1.School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, China
  • 2.Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, Hubei, China
Published: 2023-04-01 doi: 10.3969/j.issn.0253-6099.2023.02.021
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In order to investigate the influence of additive on iron recovery from red mud by using a process consisting of magnetizing roasting and low intensity magnetic separation, a kind of red mud containing high content of iron and aluminum was taken for experiments. It is found that addition of dolomite and phosphogypsum won't bring any effect to iron recovery, but sodium sulfate can bring an obvious activation effect. In the experiment, the roasting process ran at 650 ℃ for 90 min, with the addition of sodium sulfate at an amount of 10%, with total gas flow at a rate of 500 mL/min and CO at a volume fraction of 30%. And then, the obtained calcine, after being ground to a fineness of -0.045 mm 65%, was subjected to a magnetic separation with magnetic intensity of 68.8 kA/m, yielding an iron concentrate with 60.65% TFe grade at 94.01% recovery. The subsequent thermodynamic analysis showed that at the temperature within the tested range, both dolomite and phosphogypsum were conducive to the decomposition of iron olivine rather than iron spinel, while sodium sulfate could work for both.

red mud  /  additive  /  activation  /  magnetizing roasting  /  low intensity magnetic separation  /  iron recovery from red mud
Jiao HAO, Run MAO, Chaojie HU, Hanquan ZHANG, Mingxia LIU. Magnetizing Roasting with Additive Activation and Low Intensity Magnetic Separation for Iron Recovery from Red Mud[J]. Mining and Metallurgical Engineering, 2023 , 43 (2) : 91 -96 . DOI: 10.3969/j.issn.0253-6099.2023.02.021
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Year 2023 volume 43 Issue 2
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doi: 10.3969/j.issn.0253-6099.2023.02.021
  • Receive Date：2022-11-04
  • Online Date：2026-03-05
  • Published：2023-04-01
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  • Received：2022-11-04
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Affiliations
    1.School of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, China
    2.Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, Hubei, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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