Work

Numerical simulations and large-scale experimental research into air-lifting system for deep-sea mining

Year: 2025

Type: article

Abstract: The deep seabed harbors abundant mineral resources. To achieve the economic viability of deep-sea mining, the efficiency of polymetallic nodule lifting is critical. In this study, we investigate the performance of air-lifting systems, which is a key component of deep-sea mining operations. Through two-phase flow simulations, we establish the relationship between the air-injection velocity and water-lifting velocity and validate the experimental data. We constructed a large-scale air-lifting system in a 20-m-deep water tank to explore the feasibility and energy efficiency of lifting water and nodules under varying air-injection velocities and depths. In detailed energy efficiency calculations, we determined the optimal operational parameters which provide novel insights into the design and optimization of deep-sea mining lifting systems. The experimental data and findings offer valuable references for future system designs that can enhance operational stability and economic feasibility.

Source: International Journal of Naval Architecture and Ocean Engineering

DOI: 10.1016/j.ijnaoe.2025.100656

Authors: JianYu Xiao, Zhuang Kang, Jing Leng, Ming Chen, Jun Liu

Institutions: Harbin Engineering University, Chinese Academy of Sciences, Institute of Deep-Sea Science and Engineering

Language: English

Topic: Offshore Engineering and Technologies

Subfield: Ocean Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,200