XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2199
1. Based on the gas holdup measurement with differ-
ent frother concentrations under different air flow-
rates, the selected frother concentration is 30 ppm,
and the air flowrate are 350 mL/L.
2. According to the microflotation performance
under the experimental conditions of different
pHs, it indicates it is preferable that the pentland-
ite flotation is operated under acidic experimental
condition, the preferred pH is 5 when the high-
est pentlandite recovery is generated, meanwhile
the microflotation performance of lizardite is
supressed.
3. In terms of the effects of electrolytes which are
divalent cations providers on the microflotation
performance, cumulative recoveries of microflota-
tion of pentlandite samples are higher in the pres-
ence of Ca2+ and Mg2+ cations than that of Fe2+
and Ni2+ cations, indicating the Fe2+ and Ni2+
cations are detrimental ions that have significant
influence on the pentlandite flotation perfor-
mance and the concentrations of which need to
minimized to a certain level to maintain a good
flotation performance of pentlandite, specially
Fe cations need to be eliminated. In terms of the
selectivity index, the pH plays a more important
200 300 400 500 600 700
0
2
4
6
8
10
Wavelength (nm)
Influence of FeCl2 (mol/L)
0.001
0.01
0.1
1
(a) Pentlandite
200 300 400 500 600 700
0
2
4
6
8
10
Wavelength (nm)
Influence of FeCl2 (mol/L)
0.001
0.01
0.1
1
(b) Lizardite
Figure 18. Influence of FeCl
2 solutions with different molar concentrations on the adsorption of SEX in the presence of
pentlandite (a) and lizardite (b) mineral particles
200 300 400 500 600 700
0
1
2
3
4
Wavelength (nm)
Influence of NiCl2 (mol/L)
0.001
0.01
0.1
1
(a) Pentlandite
200 300 400 500 600 700
0
1
2
3
4
Wavelength (nm)
Influence of NiCl2 (mol/L)
0.001
0.01
0.1
1
(b) Lizardite
Figure 19. Influence of the NiCl
2 with different molar concentrations on the adsorption of SEX in the presence of mineral
samples, (a) pentlandite, and (b) lizardite
Absorbance
(A) Absorbance(A)
Absorbance
(A
Absor
nce
(A)
1. Based on the gas holdup measurement with differ-
ent frother concentrations under different air flow-
rates, the selected frother concentration is 30 ppm,
and the air flowrate are 350 mL/L.
2. According to the microflotation performance
under the experimental conditions of different
pHs, it indicates it is preferable that the pentland-
ite flotation is operated under acidic experimental
condition, the preferred pH is 5 when the high-
est pentlandite recovery is generated, meanwhile
the microflotation performance of lizardite is
supressed.
3. In terms of the effects of electrolytes which are
divalent cations providers on the microflotation
performance, cumulative recoveries of microflota-
tion of pentlandite samples are higher in the pres-
ence of Ca2+ and Mg2+ cations than that of Fe2+
and Ni2+ cations, indicating the Fe2+ and Ni2+
cations are detrimental ions that have significant
influence on the pentlandite flotation perfor-
mance and the concentrations of which need to
minimized to a certain level to maintain a good
flotation performance of pentlandite, specially
Fe cations need to be eliminated. In terms of the
selectivity index, the pH plays a more important
200 300 400 500 600 700
0
2
4
6
8
10
Wavelength (nm)
Influence of FeCl2 (mol/L)
0.001
0.01
0.1
1
(a) Pentlandite
200 300 400 500 600 700
0
2
4
6
8
10
Wavelength (nm)
Influence of FeCl2 (mol/L)
0.001
0.01
0.1
1
(b) Lizardite
Figure 18. Influence of FeCl
2 solutions with different molar concentrations on the adsorption of SEX in the presence of
pentlandite (a) and lizardite (b) mineral particles
200 300 400 500 600 700
0
1
2
3
4
Wavelength (nm)
Influence of NiCl2 (mol/L)
0.001
0.01
0.1
1
(a) Pentlandite
200 300 400 500 600 700
0
1
2
3
4
Wavelength (nm)
Influence of NiCl2 (mol/L)
0.001
0.01
0.1
1
(b) Lizardite
Figure 19. Influence of the NiCl
2 with different molar concentrations on the adsorption of SEX in the presence of mineral
samples, (a) pentlandite, and (b) lizardite
Absorbance
(A) Absorbance(A)
Absorbance
(A
Absor
nce
(A)