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Performance of Rare Earth Extraction Mixing Tanks with Different Impeller Configurations
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Zhicai YE1, 2, Minghui XIE2, Jiawei XIANG1, Liang WU2, Xiaoyun SANG3, Zhiguo LI3, Qinghua ZHANG4, Chao YANG4
Hydrometallurgy of China | 2025, 44(3) : 412 - 423
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Hydrometallurgy of China | 2025, 44(3): 412-423
• Experiment Research •
Performance of Rare Earth Extraction Mixing Tanks with Different Impeller Configurations
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Zhicai YE1, 2, Minghui XIE2, Jiawei XIANG1, Liang WU2, Xiaoyun SANG3, Zhiguo LI3, Qinghua ZHANG4, Chao YANG4
Affiliations
  • 1 College of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, China
  • 2 Zhejiang Greatwall Mixers Co., Ltd., Wenzhou 325019, China
  • 3 China Northern Rare Earth (Group) High-Tech Co., Ltd., Baotou 014060, China
  • 4 CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences,Beijing 100190, China
Published: 2025-06-20 doi: 10.13355/j.cnki.sfyj.2025.03.016
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The design and optimization of extraction mixing tank is one of the key factors affecting the extraction efficiency of rare earth. The mixing performance of semi-open curved-blade disc-type stirring impeller(semi-open BWY), semi-open straight-blade disc-type stirring impeller(semi-open BPY), closed curved-blade disc-type stirring impeller (closed BWY) and closed straight-blade disc-type stirring impeller(closed BPY) paddle in the mixing tank was studied by experiment and numerical simulation. The negative pressure, power, discharge flow rate and flow field distribution generated by the four types of impellers at different rotational speeds were investigated. Taking closed BPY as an example, the six parameters of blade diameter, blade width, blade arc length, inner ring diameter, suction port diameter of the mixing tank, and the height between the blade and the suction port were analyzed in detail. The correlation equations of negative pressure, power number, turbulent kinetic energy dissipation rate and displacement number were established. The results show that under the same power conditions, reducing the blade diameter, inner ring diameter, suction port diameter, height between the blade and the suction port and blade width, as well as increasing the blade arc length, can enhance the mixing suction capacity, but it can reduce the blade displacement.

rare earth  /  extraction  /  mixing tank  /  impeller  /  negative pressure  /  numerical simulation  /  correlation
Zhicai YE, Minghui XIE, Jiawei XIANG, Liang WU, Xiaoyun SANG, Zhiguo LI, Qinghua ZHANG, Chao YANG. Performance of Rare Earth Extraction Mixing Tanks with Different Impeller Configurations[J]. Hydrometallurgy of China, 2025 , 44 (3) : 412 -423 . DOI: 10.13355/j.cnki.sfyj.2025.03.016
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Year 2025 volume 44 Issue 3
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Article Info
doi: 10.13355/j.cnki.sfyj.2025.03.016
  • Receive Date：2024-10-08
  • Online Date：2025-09-01
  • Published：2025-06-20
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  • Received：2024-10-08
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Affiliations
    1 College of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, China
    2 Zhejiang Greatwall Mixers Co., Ltd., Wenzhou 325019, China
    3 China Northern Rare Earth (Group) High-Tech Co., Ltd., Baotou 014060, China
    4 CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences,Beijing 100190, 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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