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Investigation of Component Migration Behavior During a Combined Flotation, LIMS and HIMS Process for Recycling Blast Furnace Dust
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Honghu TANG1, 2, Qi XIONG1, Yong ZENG1, Zhaocheng JIN1, Feng JIANG1, 2, Li WANG1, 2, Wei SUN1, 2
Mining and Metallurgical Engineering | 2025, 45(3) : 88 - 93
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Mining and Metallurgical Engineering | 2025, 45(3): 88-93
• MINERAL PROCESSING •
Investigation of Component Migration Behavior During a Combined Flotation, LIMS and HIMS Process for Recycling Blast Furnace Dust
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Honghu TANG1, 2, Qi XIONG1, Yong ZENG1, Zhaocheng JIN1, Feng JIANG1, 2, Li WANG1, 2, Wei SUN1, 2
Affiliations
  • 1.School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
  • 2.Engineering Research Center of Carbon Emission Reduction in Development and Utilization of Metal Resources, Ministry of Education, Central South University, Changsha 410083, Hunan, China
Published: 2025-06-01 doi: 10.3969/j.issn.0253-6099.2025.03.014
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A processing technique consisting of flotation, low-intensity magnetic separation (LIMS) and high-intensity magnetic separation (HIMS) was proposed for recycling blast furnace dust. With kerosene as a collector and zinc sulfate as a depressant, a flotation process consisting of one roughing and two cleaning was adopted firstly for decarbonization. Then, the obtained tailings were processed by LIMS followed by HIMS to obtain an iron concentrate, and the zinc concentrate was produced as the magnetic separation tailings. The full flowsheet test produced a carbon concentrate grading 86.16% C at 88.74% recovery, an iron concentrate (LIMS concentrate) grading 55.75% Fe at 67.01% recovery, and a zinc concentrate grading 16.79% Zn at 75.74% recovery. The migration patterns of main elements during the whole separation process were analyzed by using XRD and SEM-EDS. It is found that iron concentrate is mainly magnetite, and zinc concentrate is mainly zinc oxide. The lost zinc minerals left in the iron concentrate are mostly ZnFe2O4 in dispersed distribution. Besides, some processing technique and product schemes are also proposed for the obtained difficult-to-treat HIMS concentrate.

blast furnace dust  /  flotation  /  magnetic separation  /  decarbonization  /  element migration  /  zinc concentrate  /  carbon concentrate  /  iron concentrate
Honghu TANG, Qi XIONG, Yong ZENG, Zhaocheng JIN, Feng JIANG, Li WANG, Wei SUN. Investigation of Component Migration Behavior During a Combined Flotation, LIMS and HIMS Process for Recycling Blast Furnace Dust[J]. Mining and Metallurgical Engineering, 2025 , 45 (3) : 88 -93 . DOI: 10.3969/j.issn.0253-6099.2025.03.014
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Year 2025 volume 45 Issue 3
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doi: 10.3969/j.issn.0253-6099.2025.03.014
  • Receive Date：2024-12-10
  • Online Date：2026-03-19
  • Published：2025-06-01
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  • Received：2024-12-10
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Affiliations
    1.School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
    2.Engineering Research Center of Carbon Emission Reduction in Development and Utilization of Metal Resources, Ministry of Education, Central South University, Changsha 410083, Hunan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2025.03.014
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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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