Comminution of Polymetallic Nodules with a High-Pressure Water Jet

Przemysław J Borkowski; Tomasz Abramowski; Monika Szada-Borzyszkowska; Wiesław Szada-Borzyszkowski

doi:10.3390/ma15228228

Comminution of Polymetallic Nodules with a High-Pressure Water Jet

Materials (Basel). 2022 Nov 19;15(22):8228. doi: 10.3390/ma15228228.

Authors

Przemysław J Borkowski¹, Tomasz Abramowski², Monika Szada-Borzyszkowska³, Wiesław Szada-Borzyszkowski⁴

Affiliations

¹ Faculty of Mechanical Engineering, Wroclaw University of Technology, 50-370 Wroclaw, Poland.
² Faculty of Navigation, Maritime University of Szczecin, 70-500 Szczecin, Poland.
³ Faculty of Mechanical Engineering, Koszalin University of Technology, 75-620 Koszalin, Poland.
⁴ Branch of the KUT in Szczecinek, Koszalin University of Technology, 78-400 Szczecinek, Poland.

Abstract

This paper presents an original method for the comminution of polymetallic nodules in a hydro-jet mill of our own design, having the water jet pressure in the range of 70-200 MPa. The best comminution results are ensured by equipping the mill with a water jet having a diameter d_w = 0.7 mm and a comminution-homogenization tube having a diameter d_h = 2.4 mm, and by setting a distance s = 10 mm from the outlet of the homogenization tube to the comminuting disc. Particles of concretions comminuted under such conditions are characterized by a fairly regular isometric shape and favorable morphology represented by intense development of the specific surface.

Keywords: high-pressure water jet; hydro-jet mill; nodules comminution; polymetallic nodules.

Grants and funding

This research received no external funding.