XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2411
Au-Ag alloy (50:50), as seen in Figure 11. The same peaks
at 355 and 357 (Ag-BCBDTC complexes) observed on
pure Ag were present, as well as a peak at 445 correlating
with a complex of 197Au-BCBDTC. These support the
strong interaction of BCBDTC with Au, Ag, and their
alloys under OCP conditions. This is in contrast with other
ligands such as the monothiophosphates, which seem to
only adsorb on pure Au under strongly oxidizing condi-
tions (Nagaraj et al., 1992). These findings also corroborate
with the results from CV and wettability and substantiate
the use of Pearson’s HSAB principle to describe the selectiv-
ity of BCBDTC for soft acids.
Figure 10. Positive ion SIMS spectra for Pyrite B: a) in the absence of ligand and b) conditioned with 5 ×
10–4 M BCBDTC
Au-Ag alloy (50:50), as seen in Figure 11. The same peaks
at 355 and 357 (Ag-BCBDTC complexes) observed on
pure Ag were present, as well as a peak at 445 correlating
with a complex of 197Au-BCBDTC. These support the
strong interaction of BCBDTC with Au, Ag, and their
alloys under OCP conditions. This is in contrast with other
ligands such as the monothiophosphates, which seem to
only adsorb on pure Au under strongly oxidizing condi-
tions (Nagaraj et al., 1992). These findings also corroborate
with the results from CV and wettability and substantiate
the use of Pearson’s HSAB principle to describe the selectiv-
ity of BCBDTC for soft acids.
Figure 10. Positive ion SIMS spectra for Pyrite B: a) in the absence of ligand and b) conditioned with 5 ×
10–4 M BCBDTC