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Role and Mechanism of Fe3+ in Removal of Biotite by Reverse Flotation of Magnetite
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Jiale HAO1, Jiayan TANG1, 2, 3, 4, Fang ZHAO1, Yurui ZHAO1, Jieliang WANG1, 2, 3, 4, Zhao CAO1, 2, 3, 4
Mining and Metallurgical Engineering | 2026, 46(1) : 80 - 84
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Mining and Metallurgical Engineering | 2026, 46(1): 80-84
• MINERAL PROCESSING •
Role and Mechanism of Fe3+ in Removal of Biotite by Reverse Flotation of Magnetite
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Jiale HAO1, Jiayan TANG1, 2, 3, 4, Fang ZHAO1, Yurui ZHAO1, Jieliang WANG1, 2, 3, 4, Zhao CAO1, 2, 3, 4
Affiliations
  • 1.School of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
  • 2.Inner Mongolia Key Laboratory of Mining Engineering, Baotou 014010, Inner Mongolia, China
  • 3.Inner Mongolia Engineering Research Center for Safe Mining and Utilization of Coal, Baotou 014010, Inner Mongolia, China
  • 4.Inner Mongolia Collaborative Innovation Center for Green Mining and Green Utilization of Coal, Baotou 014010, Inner Mongolia, China
doi: 10.3969/j.issn.0253-6099.2026.01.013
Outline
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In consideration of biotite content in iron concentrate from magnetic separation, it was proposed that a reverse flotation process with sodium oleate was adopted, in which soluble starch was used to depress magnetite and ferric ions (Fe3+) to activate biotite. And then, the flotation results and the mechanism of reagent interaction in flotation process were verified by performing a pure mineral test, zeta potential measurement, adsorption capacity detection and infrared spectra analysis. It is found that Fe3+ can slightly enhance adsorption of sodium oleate and soluble starch onto magnetite surfaces, but significantly enhance their adsorption onto biotite. With Fe3+ at concentration of 1 × 10-3 mol/L, a reverse flotation test of the artificially mixed ore of magnetite and biotite (with magnetite accounting for 70% by mass) can produce biotite at a recovery of 62.76% and magnetite at a recovery of 16.09%, indicating a good separation effect.

biotite  /  magnetite  /  ferric ion  /  flotation  /  depressant  /  sodium oleate  /  reverse flotation
郝佳乐, 汤家焰, 赵芳, 赵宇睿, 王介良, 曹钊. Fe3+对磁铁矿反浮选脱除黑云母的作用及机理. 矿冶工程杂志, 2026 , 46 (1) : 80 -84 . DOI: 10.3969/j.issn.0253-6099.2026.01.013
Jiale HAO, Jiayan TANG, Fang ZHAO, Yurui ZHAO, Jieliang WANG, Zhao CAO. Role and Mechanism of Fe3+ in Removal of Biotite by Reverse Flotation of Magnetite[J]. Mining and Metallurgical Engineering, 2026 , 46 (1) : 80 -84 . DOI: 10.3969/j.issn.0253-6099.2026.01.013
Year 2026 volume 46 Issue 1
118
33
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doi: 10.3969/j.issn.0253-6099.2026.01.013
  • Receive Date:2025-09-02
  • Online Date:2026-10-08
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  • Received:2025-09-02
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Affiliations
    1.School of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
    2.Inner Mongolia Key Laboratory of Mining Engineering, Baotou 014010, Inner Mongolia, China
    3.Inner Mongolia Engineering Research Center for Safe Mining and Utilization of Coal, Baotou 014010, Inner Mongolia, China
    4.Inner Mongolia Collaborative Innovation Center for Green Mining and Green Utilization of Coal, Baotou 014010, Inner Mongolia, 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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