High Pressure Grinding Rolls
(HPGRs）have been
applied in mineral processing plants, largely in iron ore and
diamond treatment. In these industries, the application of HPGR
ranges from coarse grinding, e.g. the grinding of *5mm (2.5”)size
excess pebbles in circulation loops, to final grinding of <**0μm
material to high Blaine values in the preparation of pellet
feed.</span>
HPGR grinding significantly enhances over all
through put. This results in the creation of a large proportion of
finished product and the reduced Bond Work Index of the pressed
material. This generally allows for a reduction in the projected
number of equipment units in tertiary crushing, quaternary crushing
and grinding.
