Studies on the effects of vessel nozzle parameters on the ore transportation efficiency in deep-sea mining

As it is difficult to control the ore volume concentration of pump-vessel combined ore transporting equipment for deep-sea mining during the ore pulp conveying process and it can’t remain continuous, stable and reliable in the process, the SIMPLE algorithm is adopted to calculate and analyze the rules of the vessel nozzle parameters effects on the ore transportation concentration and conveying efficiency based on the Euler-Euler model of the Fluent software and standard turbulence model, and the conclusion is experimentally verified that ore transportation volume concentrations can be controlled and adjusted by controlling vessel nozzle parameters. Simulation results are drawn as follows: with the vessel nozzle diameter bigger, the ore transportation volume concentration becomes bigger and the water jet impacting force on ores becomes weaker so that the transporting process gets more stable. With the nozzle outlet height from the vessel bottom greater, the ore transportation volume concentration also becomes bigger, but the transporting process gets less stable. When the nozzle outlet height from the vessel bottom equals to 800 millimeters or 900 millimeters, it can ensure that the ore transportation volume concentration get bigger and the transporting process gets stable simultaneously.

Anahtar Kelimeler:

Deep-sea mining, ore transportation, vessel nozzle, volume concentration, solid-liquid two-phase flow

Vessel nozzle parameter effects analysis on the ore transportation concentration for deep-sea mining

Keywords:

Deep-sea mining, ore transportation, vessel nozzle, volume concentration, solid-liquid two-phase flow,

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Cao, Y., Du, X.G., Song, H.F., Lin, Q., Yang, B. 2020. Overall strength analysis and assessment of underwater buffer station in deep sea mining .Ship & Ocean Engineering, 49(3), 136-139.

Dai, Y., Li, X.Y., Yin, W.W., Huang, Z.H., Xie, Y. 2021. Dynamics analysis of deep-sea mining pipeline system considering both internal and external flow. Marine Georesources & Geotechnology, 39(4), 408-418. https://doi.org/10.1080/1064119X.2019.1708517

Eshghinejadfard, A., Hosseini, S.A., Thévenin, D. 2019. Effect of particle density in turbulent channel flows with resolved oblate spheroids. Computers and Fluids, 184, 29-39. https://doi.org/10.1016/j.compfluid.2019.01.027

Hu, Q., Zou, L., Lv, T., Guan, Y.J., Sun, T.Z. 2020. Experimental and Numerical Investigation on the Transport Characteristics of Particle-Fluid Mixture in Y-Shaped Elbow. Journal of Marine Science and Engineering, 8(9), 675. https://doi.org/10.3390/jmse8090675

Jebakumar, A.S., Magi, V., Abraham, J. 2018. Lattice-Boltzmann simulations of particle transport in a turbulent channel flow. International Journal of Heat and Mass Transfer, 127, 339-348. https://doi.org/10.1016/j.ijheatmasstransfer.2018.06.107

Kotoky, S., Dalal, A., Natarajan, G. 2018. Effects of specularity and particle-particle restitution coefficients on the hydrodynamic behavior of dispersed gas-particle flows through horizontal channels. Advanced Powder Technology, 29(4), 874-889. https://doi.org/10.1016/j.apt.2018.01.004

Kotoky, S., Dalal, A., Natarajan, G. 2018. A parametric study of dispersed laminar gas-particle flows through vertical and horizontal channels. Advanced Powder Technology, 29(5), 1072-1084. https://doi.org/10.1016/j.apt.2018.01.024

Leal Filho, W., Abubakar, I.R., Nunes, C., Platje, J.J., Ozuyar, P.G., Will, M., Nagy, G.J., Al-Amin, A.Q., Hunt, J.D., Li, C.L. 2021. Deep Seabed Mining: A Note on Some Potentials and Risks to the Sustainable Mineral Extraction from the Oceans. Journal of Marine Science and Engineering, 9(5), 521. https://doi.org/10.3390/jmse9050521

Li, J.H., Song, J.C., Luo, Y. 2016. Research progress and prospect of deep sea polymetallic sulfide mining. Ocean Development and Management, 36(11), 29-37.

McLoone, M., Quinlan, N.J. 2020. Particle transport velocity correction for the finite volume particle method for multi-resolution particle distributions and exact geometric boundaries. Engineering Analysis with Boundary Elements, 114, 114-126. https://doi.org/10.1016/j.enganabound.2020.02.003

Pang, J.P. (2020): Development of research on deep-sea polymetallic nodule mining vehicle in China. Mining & Processing Equipment, 48(3), 8-11. DOI: 10.16816/j.cnki.ksjx.2020.03.002

Slade, W.H., Peacock, T., Alford, M. 2020. Monitoring Deep-Sea Mining's Effects. Sea Technology, 61(9), 13-16.

Takano, S., ONO, M., Masanobu, S. 2020. Evaluation method of pipe wear for development of seafloor massive sulfides. Journal of JSCE, 8(1), 288-302. DOI: 10.2208/JOURNALOFJSCE.8.1_288

Xu, H.L., Peng, N., Yang, F.Q. 2020. Effect of slurry flow rate on cavitation characteristics of deep-sea mining pump. Journal of Drainage and Irrigation Machinery Engineering, 38(3), 217-223.

Yang, J.M., Liu L., Lyu, H.N., Lin, Z.Q. 2020. Deep-Sea Mining Equipment in China: Current Status and Prospect. Strategic Study of CAE, 22(6), 1-9.