Handling of Bulk Solids in a Marine Environment from Seabed to Shore

D.L. Schott*, E. de Hoog, J.M. van Wijk, R.L.J. Helmons

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeChapterProfessional

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Abstract

In this chapter, the work that is being done in relation to machine-cargo interactions relevant to deep-sea mining is elaborated. To ensure safe and efficient operations across the entire mining value chain, it is important to be aware of the implications of certain design and process decisions. An overview of mechanisms influencing the mechanical response of the bulk materials and the main effects leading to (mechanical) degradation of the ore, e.g., fragmentation, abrasion, is presented. Although the concepts are applicable to each of the deep-sea deposits, our focus is on polymetallic nodules in a riser-based concept. Results are discussed of experiments in which nodules are fragmented due to particle-particle collisions and collisions with different handling equipment, such as the seabed harvester, riser pipe, pump impeller, pipe bends, etc. Next to fragmentation, degradation due to abrasion occurs due to particles rolling, sliding, and colliding with each other, resulting in the generation of nodule fines. Based on the same set of nodules, mechanical bulk properties of dry and wet nodules are studied. The obtained results provide relevant insights for the design of the nodules handling equipment. Furthermore, modelling approaches applied to other fragile bulk materials where the breakage and generation of fines play an important role are outlined. It is described how these modelling approaches can assist in the design of handling equipment, and recommendations are given for next steps to further optimize their design.
Original languageEnglish
Title of host publicationDeep-Sea Mining and the Water Column
Subtitle of host publicationAdvances, Monitoring and Related Issues
EditorsRahul Sharma
PublisherSpringer
Chapter4
Pages91-127
Number of pages37
ISBN (Electronic)978-3-031-59060-3
ISBN (Print)978-3-031-59059-7, 978-3-031-59062-7
DOIs
Publication statusPublished - 2024

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Polymetallic nodules
  • Degradation
  • Fragmentation
  • Friction

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