HPGRs has been applied in mineral processing plants,largely in iron ore and diamond treatment. In these industries, the application of HPGR ranges fromcoarse grinding, e.g. the grinding of 65mm (2.5”)size excess pebbles in AG circulation loops, to finalgrinding of <100μm material to high Blaine values inthe preparation of pellet feed.
HPGR grinding significantly enhances over all through put. This results in the creation of a largeproportion of finished product and the reduced BondWork Index of the pressed material. This generally allows for a reduction in the projected number ofequipment units in tertiary crushing, quaternary crushing and grinding.