XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2627
Adsorption Mechanism of NaOL and Kerosene
The possible adsorption mechanism of NaOL and kerosene
on cassiterite surface can be presented as Figure 5. When
NaOL was first added, it was adsorbed on the cassiterite
surface to make it hydrophobic, and then after kerosene
was added, kerosene was preferentially co-adsorbed on the
hydrophobic site, that was the hydrophobic carbon chain of
NaOL. When kerosene was first added, it was adsorbed on
the cassiterite surface with small adsorption capacity, and
then after NaOL was added, the NaOL was co-adsorbed at
the kerosene site, and it was also co-adsorbed with kerosene
at other sites on cassiterite surface.
CONCLUSIONS
When kerosene was used alone, its adsorption amount on
the cassiterite surface was very small and it cannot effec-
tively induce fine cassiterite agglomeration, so it cannot
effectively promote the flotation of fine cassiterite. Using
NaOL alone, using NaOL first followed by kerosene, using
kerosene first followed by NaOL can effectively induce fine
cassiterite agglomeration, and the apparent particle size,
surface hydrophobicity and flotation recovery of the aggre-
gates increased successively. Therefore, the method of add-
ing kerosene before NaOL can effectively strengthen the
hydrophobic agglomeration flotation of fine cassiterite.
ACKNOWLEDGMENTS
The authors gratefully acknowledge the financial support of
this research by the National Natural Science Foundation
of China (No. 52074355) and Outstanding Youth Scientist
Foundation of Hunan Province (No. 2023JJ10070).
REFERENCES
[1] Li H, Qin W, Li J, et al. Tracing the global tin flow
network: highly concentrated production and con-
sumption [J]. Resources, Conservation and Recycling,
2021, 169: 105495.
7.23 10.79
53.67
66.54
81.23
0
20
40
60
80
100
Without
reagent
Kerosene NaOL Kerosene
+NaOL
NaOL+
Kerosene
Figure 4. Flotation recovery of cassiterite under different
reagent
Figure 5. Schematic of the adsorption mechanism of NaOL and kerosene on cassiterite surface
Flotationr
overy
(%)
Adsorption Mechanism of NaOL and Kerosene
The possible adsorption mechanism of NaOL and kerosene
on cassiterite surface can be presented as Figure 5. When
NaOL was first added, it was adsorbed on the cassiterite
surface to make it hydrophobic, and then after kerosene
was added, kerosene was preferentially co-adsorbed on the
hydrophobic site, that was the hydrophobic carbon chain of
NaOL. When kerosene was first added, it was adsorbed on
the cassiterite surface with small adsorption capacity, and
then after NaOL was added, the NaOL was co-adsorbed at
the kerosene site, and it was also co-adsorbed with kerosene
at other sites on cassiterite surface.
CONCLUSIONS
When kerosene was used alone, its adsorption amount on
the cassiterite surface was very small and it cannot effec-
tively induce fine cassiterite agglomeration, so it cannot
effectively promote the flotation of fine cassiterite. Using
NaOL alone, using NaOL first followed by kerosene, using
kerosene first followed by NaOL can effectively induce fine
cassiterite agglomeration, and the apparent particle size,
surface hydrophobicity and flotation recovery of the aggre-
gates increased successively. Therefore, the method of add-
ing kerosene before NaOL can effectively strengthen the
hydrophobic agglomeration flotation of fine cassiterite.
ACKNOWLEDGMENTS
The authors gratefully acknowledge the financial support of
this research by the National Natural Science Foundation
of China (No. 52074355) and Outstanding Youth Scientist
Foundation of Hunan Province (No. 2023JJ10070).
REFERENCES
[1] Li H, Qin W, Li J, et al. Tracing the global tin flow
network: highly concentrated production and con-
sumption [J]. Resources, Conservation and Recycling,
2021, 169: 105495.
7.23 10.79
53.67
66.54
81.23
0
20
40
60
80
100
Without
reagent
Kerosene NaOL Kerosene
+NaOL
NaOL+
Kerosene
Figure 4. Flotation recovery of cassiterite under different
reagent
Figure 5. Schematic of the adsorption mechanism of NaOL and kerosene on cassiterite surface
Flotationr
overy
(%)