XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 1569
to October 2022) and the subsequent period (December
2022), respectively.
Each point on the curve represents a feed pile from
the Vargem Grande 2 plant. For both evaluated periods,
a moderate to high correlation was observed between the
data predicted by the geometallurgical model and the
actual values obtained at the plant for mass and metal-
lurgical recovery. Specifically, the correlation coefficients
were 0.71 and 0.63 for mass recovery and 0.86 and 0.70
for metallurgical recovery for the first and second periods,
respectively. These results are highly satisfactory, consider-
ing the inherent operational variations in the industrial set-
ting. However, it is worth noting that the validation for
SiO2 in the industrial tests was not satisfactory, indicating
the need for future optimization of the model. Additionally,
reconciliation for the energy requirement is challenging to
Figure 11. Horizontes spatial geometallurgical models for energy requirement and SiO
2 content in the concentrate, respectively
Figure 12. Comparative analysis of predicted mass and metallurgical recoveries vs. industrial outcomes for the initial
assessment period (August to October 2022)
to October 2022) and the subsequent period (December
2022), respectively.
Each point on the curve represents a feed pile from
the Vargem Grande 2 plant. For both evaluated periods,
a moderate to high correlation was observed between the
data predicted by the geometallurgical model and the
actual values obtained at the plant for mass and metal-
lurgical recovery. Specifically, the correlation coefficients
were 0.71 and 0.63 for mass recovery and 0.86 and 0.70
for metallurgical recovery for the first and second periods,
respectively. These results are highly satisfactory, consider-
ing the inherent operational variations in the industrial set-
ting. However, it is worth noting that the validation for
SiO2 in the industrial tests was not satisfactory, indicating
the need for future optimization of the model. Additionally,
reconciliation for the energy requirement is challenging to
Figure 11. Horizontes spatial geometallurgical models for energy requirement and SiO
2 content in the concentrate, respectively
Figure 12. Comparative analysis of predicted mass and metallurgical recoveries vs. industrial outcomes for the initial
assessment period (August to October 2022)