High pressure dewatering rolls Mark-II: A novel dewatering technology for mineral tailings

Abstract

High Pressure Dewatering Rolls (HPDR) is a continuous, high pressure, cloth-less filter designed to improve solid–liquid separation. The Mark-I prototype demonstrated cake solid concentrations comparable to those of conventional filter presses during trials with various industrial suspensions. A further development (HPDR Mk-II) is described here. It is designed for mineral tailings, features a larger filtration area, improved handling of fine particles using 30 µm wedge wires as the filter surface, and the potential for cost reductions in achieving low moisture content. This study overviews the design, proof of concept (phase 1) and safe and continuous steady state operation (phase 2) of the..