3120 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
effect of collector 2-OA compared with the conventional
collector PAX under various flotation conditions such as
collector dosage, pulp pH, pulp density, mineral particle
size, and flotation time was investigated through the one-
stage flotation. Flotation kinetics was conducted to inves-
tigate the behavior of the collector during the flotation
process. Additionally, a two-stage flotation was performed
to test the persistence of the novel collector 2-OA.
EXPERIMENTAL
Materials
A copper sulfide ore obtained from the mine in Chile was
utilized in the flotation experiments. The main chemical
composition analysis was performed by Microwave Plasma-
Atomic Emission Spectrometry (MP-AES, Agilent 4200)
and X-ray fluorescence Spectrometer (XRF, Rigaku ZSX
Primus II) as shown in Table 1. The mineralogical analy-
sis of the copper sulfide ore was determined by X-ray dif-
fraction (XRD, Rigaku RINT–2200V) as presented in
Figure 1. Size reduction of the copper sulfide ore was con-
ducted using a jaw crusher (P-1, Fritsch Japan Co, Ltd) and
a disc mill (P13, Fritsch Co, Ltd). The resulting ore sample
was then classified to a certain range of size as the flotation
feed using a sieving machine (AS 200 digit, Retsch Japan
Co, Ltd).
The novel collector 2-OA of high purity was synthe-
sized and analyzed in the laboratory, and its properties are
shown in Table 2. Potassium amylxanthate (PAX, purity
over 97%, Tokyo Chemistry Industry Co, Ltd.) was used
to make a comparison of the flotation effect with 2-OA.
Flotation Experiments
The various flotation conditions were investigated using
one-stage flotation on the copper sulfide ore. The flotation
was conducted on a flotation machine with a cell volume of
1 L. Calcium hydroxide (Ca(OH)2) was used to adjust the
pH of the pulp, and the pulp was conditioned for 5 min.
Figure 1. XRD pattern of the copper sulfide ore
Table 1. Main chemical composition analysis of the copper
sulfide ore
Element Cu Fe S Si
Copper sulfide ore 4.2 8.5 11.4 16.0
Table 2. Properties of the collector used in the study
Name Short Name Structural Formula Form Usage in Flotation
2-(octylthio)aniline 2-OA Brown oil Direct addition
Potassium
Amylxanthate
PAX Yellow solid Dissolved in water
effect of collector 2-OA compared with the conventional
collector PAX under various flotation conditions such as
collector dosage, pulp pH, pulp density, mineral particle
size, and flotation time was investigated through the one-
stage flotation. Flotation kinetics was conducted to inves-
tigate the behavior of the collector during the flotation
process. Additionally, a two-stage flotation was performed
to test the persistence of the novel collector 2-OA.
EXPERIMENTAL
Materials
A copper sulfide ore obtained from the mine in Chile was
utilized in the flotation experiments. The main chemical
composition analysis was performed by Microwave Plasma-
Atomic Emission Spectrometry (MP-AES, Agilent 4200)
and X-ray fluorescence Spectrometer (XRF, Rigaku ZSX
Primus II) as shown in Table 1. The mineralogical analy-
sis of the copper sulfide ore was determined by X-ray dif-
fraction (XRD, Rigaku RINT–2200V) as presented in
Figure 1. Size reduction of the copper sulfide ore was con-
ducted using a jaw crusher (P-1, Fritsch Japan Co, Ltd) and
a disc mill (P13, Fritsch Co, Ltd). The resulting ore sample
was then classified to a certain range of size as the flotation
feed using a sieving machine (AS 200 digit, Retsch Japan
Co, Ltd).
The novel collector 2-OA of high purity was synthe-
sized and analyzed in the laboratory, and its properties are
shown in Table 2. Potassium amylxanthate (PAX, purity
over 97%, Tokyo Chemistry Industry Co, Ltd.) was used
to make a comparison of the flotation effect with 2-OA.
Flotation Experiments
The various flotation conditions were investigated using
one-stage flotation on the copper sulfide ore. The flotation
was conducted on a flotation machine with a cell volume of
1 L. Calcium hydroxide (Ca(OH)2) was used to adjust the
pH of the pulp, and the pulp was conditioned for 5 min.
Figure 1. XRD pattern of the copper sulfide ore
Table 1. Main chemical composition analysis of the copper
sulfide ore
Element Cu Fe S Si
Copper sulfide ore 4.2 8.5 11.4 16.0
Table 2. Properties of the collector used in the study
Name Short Name Structural Formula Form Usage in Flotation
2-(octylthio)aniline 2-OA Brown oil Direct addition
Potassium
Amylxanthate
PAX Yellow solid Dissolved in water