XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 3761
Figure 5. Snapshots from the simulation for the Radial1, Radial4 and Radial7 cases
The plots show that the discharge rates are decreas-
ing as the holes are moved radially towards the center of
the mill. The slurry discharge rate becomes almost zero for
the Radial6 and Radial 7 positions of the grates. As the
holes are moved upwards in the pans there is less ore and
slurry passed through the grates from inside the mill into
the pans. At the same time, the amount of slurry and sol-
ids recirculated in the pans becomes lower as the holes are
moved towards the mill center, since less ore and slurry flow
into the pans.
It can be also noticed that the mass balance holds as
well for all cases (as shown in Table 4), namely the net flow
through the grates (mass outwards – mass inwards) is very
close to the mass discharged. There is an exception for the
Radial7 case where the differences are larger, but this is
because in that case the discharge amounts are very low.
The mass balance ensures that the simulations have reached
the steady state in all cases.
Figure 5. Snapshots from the simulation for the Radial1, Radial4 and Radial7 cases
The plots show that the discharge rates are decreas-
ing as the holes are moved radially towards the center of
the mill. The slurry discharge rate becomes almost zero for
the Radial6 and Radial 7 positions of the grates. As the
holes are moved upwards in the pans there is less ore and
slurry passed through the grates from inside the mill into
the pans. At the same time, the amount of slurry and sol-
ids recirculated in the pans becomes lower as the holes are
moved towards the mill center, since less ore and slurry flow
into the pans.
It can be also noticed that the mass balance holds as
well for all cases (as shown in Table 4), namely the net flow
through the grates (mass outwards – mass inwards) is very
close to the mass discharged. There is an exception for the
Radial7 case where the differences are larger, but this is
because in that case the discharge amounts are very low.
The mass balance ensures that the simulations have reached
the steady state in all cases.