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Settling Characteristics of Colluvial Deposits from the MSESA Orebody in Congo (DRC) and its Leaching Slurries
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Siyuan LIU1, Hui LI1, Jun ZHANG2, 3, Bin ZHENG1, Wei XU1, Bin HAN2, Liucan LI1, Changda ZHANG1, Longlong XU1
Hydrometallurgy of China | 2026, 45(4) : 547 - 555
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Hydrometallurgy of China | 2026, 45(4): 547-555
• Experiment Research •
Settling Characteristics of Colluvial Deposits from the MSESA Orebody in Congo (DRC) and its Leaching Slurries
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Siyuan LIU1, Hui LI1, Jun ZHANG2, 3, Bin ZHENG1, Wei XU1, Bin HAN2, Liucan LI1, Changda ZHANG1, Longlong XU1
Affiliations
  • 1.China Nonferrous Metal Innovation Research Institute (Tianjin) Co., Ltd., Tianjin　300380, China
  • 2.Kambove Mining SAS Co., Ltd., Katanga Likasi, Congo (DRC)
  • 3.School of Metallurgy, Northeastern University, Shenyang　110819, China
Published: 2026-08-20 doi: 10.13355/j.cnki.sfyj.2026.04.011
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Addressing the technical challenges of poor settling performance and low solid-liquid separation efficiency of the collapse deposits in the MSESA orebody of the Democratic Republic of the Congo, the process mineralogy and settling characteristics of these deposits was systematically analyzed. Furthermore, it investigates the mineralogical features and settling behaviors of both the collapse deposits and their mixed systems with the MSESA run-of-mine ore. The results indicate that the collapse deposits are low-grade copper-cobalt oxide materials, with copper mainly existing as free copper oxide and cobalt primarily hosted in gangue minerals. Settling tests determined the optimal parameters for different systems:the optimal flocculant dosage for both raw collapse deposits and the mixed ore is 20 g/t, with final settling times of 40 and 25 min, respectively. For the leaching slurries of the collapse deposits and the mixed ore, the optimal flocculant dosage is 120 g/t, with final settling times of 20 and 40 min, respectively. These findings provide a reliable basis for the resource utilization and process design of collapse deposits in the MSESA orebody.

collapse deposits  /  copper  /  cobalt  /  flocculation settling  /  solid-liquid separation  /  fine slimes slurry  /  copper-cobalt oxide ore
Siyuan LIU, Hui LI, Jun ZHANG, Bin ZHENG, Wei XU, Bin HAN, Liucan LI, Changda ZHANG, Longlong XU. Settling Characteristics of Colluvial Deposits from the MSESA Orebody in Congo (DRC) and its Leaching Slurries[J]. Hydrometallurgy of China, 2026 , 45 (4) : 547 -555 . DOI: 10.13355/j.cnki.sfyj.2026.04.011
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Year 2026 volume 45 Issue 4
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Article Info
doi: 10.13355/j.cnki.sfyj.2026.04.011
  • Receive Date：2026-03-25
  • Online Date：2026-09-11
  • Published：2026-08-20
Article Data
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History
  • Received：2026-03-25
  • Revised：2026-05-19
Funding
Affiliations
    1.China Nonferrous Metal Innovation Research Institute (Tianjin) Co., Ltd., Tianjin　300380, China
    2.Kambove Mining SAS Co., Ltd., Katanga Likasi, Congo (DRC)
    3.School of Metallurgy, Northeastern University, Shenyang　110819, 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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