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A New Type of Discontinuous Mining System for Deep-Sea Polymetallic Nodules
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Ming ZHANG1, 2, Hao ZHENG1, 2, Zhi SHUANG1, 2, Wei WANG1, 2, Xiaoyan LI1, 2
Mining and Metallurgical Engineering | 2025, 45(2) : 6 - 12
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Mining and Metallurgical Engineering | 2025, 45(2): 6-12
• MINING •
A New Type of Discontinuous Mining System for Deep-Sea Polymetallic Nodules
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Ming ZHANG1, 2, Hao ZHENG1, 2, Zhi SHUANG1, 2, Wei WANG1, 2, Xiaoyan LI1, 2
Affiliations
  • 1.Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
  • 2.State Key Laboratory of Exploitation and Utilization of Deep-Sea Mineral Resources, Changsha 410012, Hunan, China
Published: 2025-04-01 doi: 10.3969/j.issn.0253-6099.2025.02.002
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A new type of discontinuous mining system for deep-sea polymetallic nodules was proposed, consisting of collecting seafloor ore, conveying to buffer by flexible hose, and high-speed lifting of buffer. Then, the design and key equipment selection were carried out for the collecting system, flexible hose conveyance system and buffer lifting system for comprehensively lifting 100 t/h of ores at water depth of 5 200 m in the Minmetals' Contract Area. Furthermore, flexible hose configuration and load characteristics, as well as cable load dynamics during buffer lifting were all analyzed by hydrodynamic simulation. It is shown that with the flexible hose equipped with 18 buoyancy blocks, minimum bending radius of 1.6 m and a maximum tension of 4.98 kN, the whole mining system can satisfy requirements for the minimum bending radius and safe load capacity. During high-speed lifting of buffer, the cable can have the safety factor of comprehensive stress up to 5.22-6.03, exceeding the safety factor stated in national standard. These findings validate the reliability of this new type of deep-sea discontinuous mining system.

deep-sea mining  /  discontinuous mining  /  polymetallic nodules  /  collecting system  /  flexible hose conveyance  /  deep-sea collector vehicle  /  buffer lifting  /  hydrodynamics  /  flexible hose configuration  /  cable
Ming ZHANG, Hao ZHENG, Zhi SHUANG, Wei WANG, Xiaoyan LI. A New Type of Discontinuous Mining System for Deep-Sea Polymetallic Nodules[J]. Mining and Metallurgical Engineering, 2025 , 45 (2) : 6 -12 . DOI: 10.3969/j.issn.0253-6099.2025.02.002
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Year 2025 volume 45 Issue 2
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Article Info
doi: 10.3969/j.issn.0253-6099.2025.02.002
  • Receive Date：2024-11-02
  • Online Date：2026-03-19
  • Published：2025-04-01
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  • Received：2024-11-02
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Affiliations
    1.Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
    2.State Key Laboratory of Exploitation and Utilization of Deep-Sea Mineral Resources, Changsha 410012, Hunan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2025.02.002
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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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