1886 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
leaching recoveries increased with increasing catalyst dos-
age, temperature, and time (as presented in Figure 7). This
could be due to the increased in mass transfer of the metal
species between the liquid and solid phases as temperature
increases, which leads to enhanced recoveries (Crundwell et
al., 2011 Kumari et al., 2024 McDonald &Muir, 2007
Park et al., 2006 Reddy et al., 2023). Equally, the mass
transfer and solute diffusion rates of reaction through solids
into the liquid are influenced by time and thus, increasing
time enhances recoveries (Kumari et al., 2024). The effect
of the addition of ferric chloride has been described in pre-
ceding sections.
In order to better understand the combined interac-
tions, the two-dimensional contour plots are presented in
Figure 8. Uniquely, each illustration depicts the interplay
between two process parameters while holding the other
Figure 8. The contour plot of Ni recovery (%)representing combine interactions of (a) leaching temperature and grind
time (b) leaching temperature and catalyst dosage (c) leaching temperatures and H2SO4 (d) leaching temperature and
leaching time
leaching recoveries increased with increasing catalyst dos-
age, temperature, and time (as presented in Figure 7). This
could be due to the increased in mass transfer of the metal
species between the liquid and solid phases as temperature
increases, which leads to enhanced recoveries (Crundwell et
al., 2011 Kumari et al., 2024 McDonald &Muir, 2007
Park et al., 2006 Reddy et al., 2023). Equally, the mass
transfer and solute diffusion rates of reaction through solids
into the liquid are influenced by time and thus, increasing
time enhances recoveries (Kumari et al., 2024). The effect
of the addition of ferric chloride has been described in pre-
ceding sections.
In order to better understand the combined interac-
tions, the two-dimensional contour plots are presented in
Figure 8. Uniquely, each illustration depicts the interplay
between two process parameters while holding the other
Figure 8. The contour plot of Ni recovery (%)representing combine interactions of (a) leaching temperature and grind
time (b) leaching temperature and catalyst dosage (c) leaching temperatures and H2SO4 (d) leaching temperature and
leaching time