XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 1473
larger and more impact cracks, as shown in Figure 5 (right
column).
The 14 mm particles (mean size of the 15.9 × 12.7 mm
particles) may be a size class that allows the formation of
impact cracks even at a lower pressure force of 5 N/mm2 for
HPGR crushing. Higher specific pressures are required to
create impact cracks for the particles below 10 mm (like the
9.5 × 6.4 mm size fraction). Higher pressure would have
increased the compaction and impaction of packed particle
beds in HPGR.
Figure 5. 3D rendered view of the selected 9.5 × 6.4 mm particles crushed by HPGR at the specific
pressures of 5 N/mm2 (left column) and 10 N/mm2 (right column). Color codes for 3D view: green,
contour of particle grey, internal fractures
Figure 6. 3D rendered view of the selected 15.9 × 12.7 mm particles crushed by HPGR at the specific
pressures of 5 N/mm2 (left column) and 10 N/mm2 (right column). Color codes for 3D view: green,
contour of particle grey, internal fractures
larger and more impact cracks, as shown in Figure 5 (right
column).
The 14 mm particles (mean size of the 15.9 × 12.7 mm
particles) may be a size class that allows the formation of
impact cracks even at a lower pressure force of 5 N/mm2 for
HPGR crushing. Higher specific pressures are required to
create impact cracks for the particles below 10 mm (like the
9.5 × 6.4 mm size fraction). Higher pressure would have
increased the compaction and impaction of packed particle
beds in HPGR.
Figure 5. 3D rendered view of the selected 9.5 × 6.4 mm particles crushed by HPGR at the specific
pressures of 5 N/mm2 (left column) and 10 N/mm2 (right column). Color codes for 3D view: green,
contour of particle grey, internal fractures
Figure 6. 3D rendered view of the selected 15.9 × 12.7 mm particles crushed by HPGR at the specific
pressures of 5 N/mm2 (left column) and 10 N/mm2 (right column). Color codes for 3D view: green,
contour of particle grey, internal fractures