XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2089
spigot diameter results in a corresponding enlargement of
the air core diameter, confirming the influence of spigot
size on the hydrodynamics of the hydrocyclone.
Three Phase Studies
The Effect of Pressure on Air-Core Diameter
Figure 5 illustrates the RBO and GN one-step reconstruc-
tions for a 20 wt% feed solids case, utilizing the 12.5 mm
spigot diameter across operating pressures ranging from 10
to 25 psi. As seen in Figure 5, a reduction in air core size is
observed in the GN-one step compared to the two-phase
flow reconstructions in Figure 3. This reduction may be
attributed to the increased slurry viscosity with the per-
centage of solids, impacting the tangential velocity and
subsequently influencing the air core size. The RBO recon-
struction, binary optimization assimilates the slurry phase
into the air-phase region.
The Effect of Spigot Diameter on Air-core Size
Figure 6 illustrates the effect of spigot size variation on air-
core size in three-phase flow conditions in terms of mean
pixel magnitude data. The plot is presented for the 25psi
Figure 5. Reconstructions of three phase experimental data profiles 10,15,20,25 psi for 20% solids. First row: RBO
reconstructions Second row: GN-one step reconstructions
Figure 6. The Effect of Spigot Variation on Air-core Size at 25psi pressure a)RBO b)GN-one step
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