Effects of operating parameters and particle friction on water usage of deep-sea manganese nodules hydraulic conveying equipment

Abstract

One of the primary concerns for commercialising deep-sea mining is the environmental impact associated with the pumping seawater. Therefore, this study developed an unresolved coupled model of Computational Fluid Dynamics - Discrete Element Method (CFD-DEM) to explore water usage under various operating conditions. The model was validated by experimental results from previous research. The study specifically focused on examining the effects of particle friction on the particle output rate and water usage. The results indicated that to minimise the usage of seawater, the injecting speed should be set at a relatively high value to achieve a high discharge rate, such as 3 m/s in this work. The injecting speed for large particles can be set lower than that for small particles. It is recommended to set the pumping flow rate at a relatively low value, as long as it can generate enough lift force to transport the particles.

RAS ID

71354

Document Type

Journal Article

Date of Publication

6-1-2024

Volume

442

Funding Information

National Natural Science Foundation of China/Open Foundation of the State Key Laboratory of Fluid Power and Mechatronic Systems/Natural Science Foundation for Youths of Hunan Province

School

Centre for Sustainable Energy and Resources

Grant Number

52305080, GZKF-20228, 2023JJ40720

Copyright

subscription content

Publisher

Elsevier

Comments

Chen, J., Tian, T., Li, J., & You, Z. (2024). Effects of operating parameters and particle friction on water usage of deep-sea manganese nodules hydraulic conveying equipment. Powder Technology, 442, 119850. https://doi.org/10.1016/j.powtec.2024.119850

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Link to publisher version (DOI)

10.1016/j.powtec.2024.119850