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Comminution of Polymetallic Nodules with a High-Pressure Water Jet
Przemysław J Borkowski1, Tomasz Abramowski2, Monika Szada-Borzyszkowska3
1Faculty of Mechanical Engineering, Wroclaw University of Technology, 50-370 Wroclaw, 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 dw = 0.7 mm and a comminution-homogenization tube having a diameter dh = 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.
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