2198 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
pentlandite and lizardite particles is displayed in Figure 19.
In the first glance, both diagrams (a) and (b) in Figure 19
look similar, just there are small differences in terms of the
peak height and shape. In general, when the NiCl2 con-
centration is low (0.001 mol/L), there is a peak appear-
ing at 300 nm indicating the existence of left SEX after
the adsorption on mineral particles. With the increase of
NiCl2 concentration from 0.001 to 1 mol/L, the peak at
300 nm becomes lower and lower, meanwhile there are
peaks appearing at the wavelength of 400 nm, and the peak
height increases.
CONCLUSIONS AND OUTLOOKS
In this study, mineral characterizations are conducted, the
activation mechanisms of serpentine and nickel sulfide
minerals, primarily pentlandite, are investigated, and alter-
native methodologies and chemical reagents are explored to
enhance separation selectivity and efficiency, aiming to see
the effects of divalent cations on the flotation separation of
pentlandite and lizardite and the selectivity of the process.
Main conclusions are listed as follows:
200 300 400 500 600 700
0
2
4
6
8
10
Wavelength (nm)
Influence of CaCl2 (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 CaCl2 (mol/L)
0.001
0.01
0.1
1
(b) Lizardite
Figure 16. Influence of CaCl
2 solutions with different molar concentrations on the adsorption of SEX in the presence of
mineral particles, (a) pentlandite, and (b) lizardite
200 300 400 500 600 700
0
2
4
6
8
10
Wavelength (nm)
Influence of MgCl2 (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 MgCl
2
(mol/L)
0.001
0.01
0.1
1
(b) Lizardite
Figure 17. Influence of MgCl
2 solutions 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)
Absorbance
(A)
pentlandite and lizardite particles is displayed in Figure 19.
In the first glance, both diagrams (a) and (b) in Figure 19
look similar, just there are small differences in terms of the
peak height and shape. In general, when the NiCl2 con-
centration is low (0.001 mol/L), there is a peak appear-
ing at 300 nm indicating the existence of left SEX after
the adsorption on mineral particles. With the increase of
NiCl2 concentration from 0.001 to 1 mol/L, the peak at
300 nm becomes lower and lower, meanwhile there are
peaks appearing at the wavelength of 400 nm, and the peak
height increases.
CONCLUSIONS AND OUTLOOKS
In this study, mineral characterizations are conducted, the
activation mechanisms of serpentine and nickel sulfide
minerals, primarily pentlandite, are investigated, and alter-
native methodologies and chemical reagents are explored to
enhance separation selectivity and efficiency, aiming to see
the effects of divalent cations on the flotation separation of
pentlandite and lizardite and the selectivity of the process.
Main conclusions are listed as follows:
200 300 400 500 600 700
0
2
4
6
8
10
Wavelength (nm)
Influence of CaCl2 (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 CaCl2 (mol/L)
0.001
0.01
0.1
1
(b) Lizardite
Figure 16. Influence of CaCl
2 solutions with different molar concentrations on the adsorption of SEX in the presence of
mineral particles, (a) pentlandite, and (b) lizardite
200 300 400 500 600 700
0
2
4
6
8
10
Wavelength (nm)
Influence of MgCl2 (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 MgCl
2
(mol/L)
0.001
0.01
0.1
1
(b) Lizardite
Figure 17. Influence of MgCl
2 solutions 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)
Absorbance
(A)