2678 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
Figure 2. Particle size distribution of ASR-char (-1 mm)
Figure 3. Particle size distribution of three different size fractions of ASR-char sample
Upgrading of Carbon by Froth Flotation
The primary aim of the froth flotation was to separate the
hydrophilic ash (especially calcite and silicate) constituents
from the hydrophobic carbon-containing particles in the
char (Table 2) and to confirm the suitability of the new
kinetic model (Eq. 4). Figure 4 shows the experimental
results in terms of the recovery of carbon as a function
of flotation time, which are compared with the results of
calculation obtained by using the modified first-order rate
equation (Eq. 1). The recovery of carbon in the concentrate
was found to reach its maximum after a flotation time of 5
minutes (Figure 4). It was also found that the recovery of
carbon from the size fraction with the smallest particle size
(i.e., SR-Wind) converges faster than that of the other two
Figure 2. Particle size distribution of ASR-char (-1 mm)
Figure 3. Particle size distribution of three different size fractions of ASR-char sample
Upgrading of Carbon by Froth Flotation
The primary aim of the froth flotation was to separate the
hydrophilic ash (especially calcite and silicate) constituents
from the hydrophobic carbon-containing particles in the
char (Table 2) and to confirm the suitability of the new
kinetic model (Eq. 4). Figure 4 shows the experimental
results in terms of the recovery of carbon as a function
of flotation time, which are compared with the results of
calculation obtained by using the modified first-order rate
equation (Eq. 1). The recovery of carbon in the concentrate
was found to reach its maximum after a flotation time of 5
minutes (Figure 4). It was also found that the recovery of
carbon from the size fraction with the smallest particle size
(i.e., SR-Wind) converges faster than that of the other two