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Leaching Niobium from Bayan Obo Ore with Hydrofluoric Acid and Its Kinetics
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Panshi SUN1, 3, 4, Zengwu ZHAO2, Yan JIA1, 3, 4, Yulong HE1, 3, 4, Jiulong CUI1, 3, 4, Wendi ZHANG1, 3, 4, Wenqing WANG1, 3, 4
Hydrometallurgy of China | 2024, 43(3) : 236 - 241
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Hydrometallurgy of China | 2024, 43(3): 236-241
• Experiment Research •
Leaching Niobium from Bayan Obo Ore with Hydrofluoric Acid and Its Kinetics
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Panshi SUN1, 3, 4, Zengwu ZHAO2, Yan JIA1, 3, 4, Yulong HE1, 3, 4, Jiulong CUI1, 3, 4, Wendi ZHANG1, 3, 4, Wenqing WANG1, 3, 4
Affiliations
  • 1 School of Mining and Coal College, Inner Mongolia University of Science &Technology, BaoTou 014000, China
  • 2 School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
  • 3 Inner Mongolia Autonomous Region Carbon Neutrality Collaborative Innovation Center, Inner Mongolia University of Science & Technology, BaoTou 014000, China
  • 4 National and Local Joint Engineering Research Center of Integrated Exploitation of Bayan Obo Associated Mineral Waste Resources, Inner Mongolia University of Science & Technology, BaoTou 014000, China
Published: 2024-06-20 doi: 10.13355/j.cnki.sfyj.2024.03.004
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Aiming at the comprehensive utilization of niobium minerals in Bayan Obo tailings, the optimum parameters of niobium leaching process were determined by using HF as leaching agent, and the leaching kinetics was studied. The results show that the leaching rate of niobium-containing minerals can reach 90.91% under the conditions of reaction temperature of 90 ℃, liquid volume to solid mass ratio of 7/1, HF concentration of 20 mol/L, reaction time of 2 h and stirring rate of 300 r/min. The leaching process of niobium is consistent with the nuclear shrinkage model, and the leaching process is controlled by chemical reaction and diffusion mixture, and the apparent activation energy of the leaching reaction is 35.459 kJ/mol. This method can effectively extract niobium from tailings and is beneficial to subsequent separation and purification.

Bayan Obo tailings  /  niobium minerals  /  niobium  /  hydrofluoric acid  /  leaching  /  kinetics
Panshi SUN, Zengwu ZHAO, Yan JIA, Yulong HE, Jiulong CUI, Wendi ZHANG, Wenqing WANG. Leaching Niobium from Bayan Obo Ore with Hydrofluoric Acid and Its Kinetics[J]. Hydrometallurgy of China, 2024 , 43 (3) : 236 -241 . DOI: 10.13355/j.cnki.sfyj.2024.03.004
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Year 2024 volume 43 Issue 3
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doi: 10.13355/j.cnki.sfyj.2024.03.004
  • Receive Date：2024-03-18
  • Online Date：2025-09-10
  • Published：2024-06-20
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  • Received：2024-03-18
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Affiliations
    1 School of Mining and Coal College, Inner Mongolia University of Science &Technology, BaoTou 014000, China
    2 School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
    3 Inner Mongolia Autonomous Region Carbon Neutrality Collaborative Innovation Center, Inner Mongolia University of Science & Technology, BaoTou 014000, China
    4 National and Local Joint Engineering Research Center of Integrated Exploitation of Bayan Obo Associated Mineral Waste Resources, Inner Mongolia University of Science & Technology, BaoTou 014000, 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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