3736 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
Mill slurry discharge rate was calculated and plotted
(Figure 7) against number of mill revolutions (ie proxy for
time). This shows that around 4–5 revolutions start stabi-
lising and using stable results an average discharge rate was
calculated, which was around 198 ton/hr whereas the mea-
sured was 203.5 ton/hr.
Similarly, power draw was calculated and plotted as
in Figure 8. Using stable results an average SPH-DEM
power was calculated to be 1170 kW whereas the measured
electrical power was 1384 kW. Given that in simulations
mechanical and other loess are not calculated, therefor this
calculated value of power is comparable.
Figure 6. Flow through discharge grates and pulp lifters (a) flow through grates, (b) flow inside pulp chambers
Figure 7. Mill discharge against number of mill revolutions
Mill slurry discharge rate was calculated and plotted
(Figure 7) against number of mill revolutions (ie proxy for
time). This shows that around 4–5 revolutions start stabi-
lising and using stable results an average discharge rate was
calculated, which was around 198 ton/hr whereas the mea-
sured was 203.5 ton/hr.
Similarly, power draw was calculated and plotted as
in Figure 8. Using stable results an average SPH-DEM
power was calculated to be 1170 kW whereas the measured
electrical power was 1384 kW. Given that in simulations
mechanical and other loess are not calculated, therefor this
calculated value of power is comparable.
Figure 6. Flow through discharge grates and pulp lifters (a) flow through grates, (b) flow inside pulp chambers
Figure 7. Mill discharge against number of mill revolutions