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Intensified Leaching of Chalcopyrite by Pulsed Microbubbles and Its Mechanism
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Mengheng LUO1, 2, Siyuan YANG1, Xinghai CHEN1, 3, Lingyun HUANG2, Cheng LIU1, 2
Hydrometallurgy of China | 2026, 45(3) : 291 - 298
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Hydrometallurgy of China | 2026, 45(3): 291-298
• Experiment Research •
Intensified Leaching of Chalcopyrite by Pulsed Microbubbles and Its Mechanism
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Mengheng LUO1, 2, Siyuan YANG1, Xinghai CHEN1, 3, Lingyun HUANG2, Cheng LIU1, 2
Affiliations
  • 1.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan　430070, China
  • 2.Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming　650093, China
  • 3.SICOMINES S.A., Beijing　100039, China
Published: 2026-06-20 doi: 10.13355/j.cnki.sfyj.2026.03.003
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In order to improve the leaching efficiency of chalcopyrite, on the basis of the conventional heating leaching system, the pulse microbubble method is introduced to reduce the influence of the sulfide layer by improving the mass transfer efficiency in the leaching process. The kinetics is discussed, the morphology of the leaching residue is analyzed, and the mechanism of pulse microbubble-enhanced leaching is revealed. The results show that the pulsed microbubbles can significantly improve the leaching rate of chalcopyrite, and the increase rate rises with the decrease in microbubble size. Under the optimum conditions of conventional leaching, the copper leaching rate is only 53.6%, while under the same conditions, the copper leaching rate can increase to 62.48% and 80.40% when the pore size of the orifice plate is 94 and 75 μm, respectively. The SEM test results show that the pulsed microbubbles can effectively improve the aggregation degree and coverage area of the sulfide layer on the surface of chalcopyrite. The mechanism may be that the pulsed microbubbles have higher mass transfer efficiency and can accelerate the reaction rate. At the same time, the local high temperature and high pressure released during the burst can weaken the passivation of the sulfide layer during the leaching process, thereby improving the leaching effect of chalcopyrite.

chalcopyrite  /  pulse microbubbles  /  enhanced leaching  /  dynamics  /  mechanism
Mengheng LUO, Siyuan YANG, Xinghai CHEN, Lingyun HUANG, Cheng LIU. Intensified Leaching of Chalcopyrite by Pulsed Microbubbles and Its Mechanism[J]. Hydrometallurgy of China, 2026 , 45 (3) : 291 -298 . DOI: 10.13355/j.cnki.sfyj.2026.03.003
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Year 2026 volume 45 Issue 3
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Article Info
doi: 10.13355/j.cnki.sfyj.2026.03.003
  • Receive Date：2025-11-27
  • Online Date：2026-09-11
  • Published：2026-06-20
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History
  • Received：2025-11-27
  • Revised：2026-01-19
Funding
Affiliations
    1.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan　430070, China
    2.Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming　650093, China
    3.SICOMINES S.A., Beijing　100039, 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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