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Optimization of High Intensity Magnetic Separation Process for Fine Ore in JISCO
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Tao ZHANG1, 2, Tiejun CHEN1, 2, Renli ZHAN3, Xing CHEN1, 2
Mining and Metallurgical Engineering | 2023, 43(6) : 83 - 87
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Mining and Metallurgical Engineering | 2023, 43(6): 83-87
• MINERAL PROCESSING •
Optimization of High Intensity Magnetic Separation Process for Fine Ore in JISCO
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Tao ZHANG1, 2, Tiejun CHEN1, 2, Renli ZHAN3, Xing CHEN1, 2
Affiliations
  • 1.School of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
  • 2.Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan 430081, Hubei, China
  • 3.Iron and Steel Institute of Resource Utilization, JISCO, Jiayuguan 735100, Gansu, China
Published: 2023-12-01 doi: 10.3969/j.issn.0253-6099.2023.06.018
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In view of problems such as low grade of iron concentrate and low metal recovery for 0-15 mm fine ore in JISCO by adopting high-intensity magnetic separation process, experimental researches were conducted, including pre-concentration for tailings discarding, optimization of grinding-separation process and enhancing recovery of tailings by selective flocculation and magnetic seed magnetization. The results show that, the pre-concentration can effectively discard the surrounding rock and gangues that affect the separation indices, thus improving the grade of feed to grinding and separation. Tower grinding of rough concentrate can avoid overgrinding, and the recovery of magnetic concentrate can be increased by 5.32%, while concentrates have similar grade. Selective flocculation and magnetic seed magnetization can further improve metal recovery and reduce iron grade of tailings. An iron concentrate with TFe grade of 48.29% and recovery of 82.90% can be collected over the whole process. The scanning electron microscopy and infrared spectroscopy analyses show that caustic starch can establish bridges between target minerals and magnetic seeds, and it can be adsorbed onto target minerals mainly in the forms of chemisorption and hydrogen bonding, which can reduce the inclusion of gangue minerals in magnetic flocs and improve significantly the iron recovery while ensuring the iron grade of concentrate.

specularite  /  JISCO  /  pre-concentration for tailings discarding  /  overgrinding  /  selective flocculation  /  magnetic seed  /  magnetic separation  /  iron concentrate
Tao ZHANG, Tiejun CHEN, Renli ZHAN, Xing CHEN. Optimization of High Intensity Magnetic Separation Process for Fine Ore in JISCO[J]. Mining and Metallurgical Engineering, 2023 , 43 (6) : 83 -87 . DOI: 10.3969/j.issn.0253-6099.2023.06.018
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Year 2023 volume 43 Issue 6
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doi: 10.3969/j.issn.0253-6099.2023.06.018
  • Receive Date：2023-06-18
  • Online Date：2026-03-05
  • Published：2023-12-01
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  • Received：2023-06-18
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Affiliations
    1.School of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
    2.Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan 430081, Hubei, China
    3.Iron and Steel Institute of Resource Utilization, JISCO, Jiayuguan 735100, Gansu, 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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