XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 3163
and process conditions, recovery is significantly larger in
concentrate one. Yet, in the case of CAM phases, recov-
ery approaches zero at concentrate 2 for low solids content
and at concentrate 3 for higher solids content. The higher
recovery at concentrate 3 in comparison to concentrate 4
can probably be attributed to its significantly larger time
interval (cf. Froth flotation). Graphite recovery increases
linearly with particle size in the case of concentrate one
and follows the elephant curve for the other concentrates.
Recovery of CAM phases follows the typical entrainment
trend where it is quasi-linearly negatively correlated with
particle size.
Figure 6 depicts the flotation kinetics of graphite parti-
cles in terms of Rmax (A) and k (B). The maximum recovery
of graphite particles is quite similar for both pulp density
conditions, reaching a maximum of ca. 97% for particles
bigger than 30 µm and between 95% and 85% for par-
ticles smaller than 30 µm. The main difference between the
tested operating conditions is the spread in Rmax for par-
ticles smaller than 30 µm, which is larger at a high solids
Figure 4. Comparison between predicted and observed enrichment factor and recovery relations for the distinct phases
according to the process conditions
Figure 5. Recovery probabilities of the distinct phases in the different flotation concentrates as a function of particle size
according to the process conditions. Each point represents a particle
and process conditions, recovery is significantly larger in
concentrate one. Yet, in the case of CAM phases, recov-
ery approaches zero at concentrate 2 for low solids content
and at concentrate 3 for higher solids content. The higher
recovery at concentrate 3 in comparison to concentrate 4
can probably be attributed to its significantly larger time
interval (cf. Froth flotation). Graphite recovery increases
linearly with particle size in the case of concentrate one
and follows the elephant curve for the other concentrates.
Recovery of CAM phases follows the typical entrainment
trend where it is quasi-linearly negatively correlated with
particle size.
Figure 6 depicts the flotation kinetics of graphite parti-
cles in terms of Rmax (A) and k (B). The maximum recovery
of graphite particles is quite similar for both pulp density
conditions, reaching a maximum of ca. 97% for particles
bigger than 30 µm and between 95% and 85% for par-
ticles smaller than 30 µm. The main difference between the
tested operating conditions is the spread in Rmax for par-
ticles smaller than 30 µm, which is larger at a high solids
Figure 4. Comparison between predicted and observed enrichment factor and recovery relations for the distinct phases
according to the process conditions
Figure 5. Recovery probabilities of the distinct phases in the different flotation concentrates as a function of particle size
according to the process conditions. Each point represents a particle