2954 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
be recovered through an internal or external launder. The
froth is washed by down-flowing water to remove entrained
hydrophilic particles.
A rotor and stator are located inside the canister, so
mechanical energy is introduced into the system, as in a
conventional cell. However, in comparison to conven-
tional mechanical cells, the amount of mechanical energy
introduced per volume into the canister is much higher,
while the amount of mechanical energy introduced per
volume into the overall system is much lower. This allows
the StackCell ® to target and isolate the part of the system
that benefits from mechanical energy. The size and design
of the StackCell ® also allow the installation of a bank of
several cells in a vertical configuration. Such an installation
increases retention time and minimizes the effects of short
circuiting, while the vertical configuration requires less floor
space and decreases pumping costs by using gravity flow.
Hydrofloat™ Cell
The HydroFloat ™ (HF) cell, shown in Figure 12, has an
aerated, conical-shaped, fluidized-bed that combines flota-
tion with gravity and elutriation techniques, enhancing the
recoverability of middling, coarse, and poorly liberated par-
ticles (Kohmuench et al. 2018).
Figure 10. SkimAir® Cell, (Mackinnon et al. 2003 and Metso 2024c)
Figure 11. Eriez StackCell® (Eriez 2024b)
be recovered through an internal or external launder. The
froth is washed by down-flowing water to remove entrained
hydrophilic particles.
A rotor and stator are located inside the canister, so
mechanical energy is introduced into the system, as in a
conventional cell. However, in comparison to conven-
tional mechanical cells, the amount of mechanical energy
introduced per volume into the canister is much higher,
while the amount of mechanical energy introduced per
volume into the overall system is much lower. This allows
the StackCell ® to target and isolate the part of the system
that benefits from mechanical energy. The size and design
of the StackCell ® also allow the installation of a bank of
several cells in a vertical configuration. Such an installation
increases retention time and minimizes the effects of short
circuiting, while the vertical configuration requires less floor
space and decreases pumping costs by using gravity flow.
Hydrofloat™ Cell
The HydroFloat ™ (HF) cell, shown in Figure 12, has an
aerated, conical-shaped, fluidized-bed that combines flota-
tion with gravity and elutriation techniques, enhancing the
recoverability of middling, coarse, and poorly liberated par-
ticles (Kohmuench et al. 2018).
Figure 10. SkimAir® Cell, (Mackinnon et al. 2003 and Metso 2024c)
Figure 11. Eriez StackCell® (Eriez 2024b)