XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2245
potential of lepidolite after adding NBs. This phenomenon
may be due to the easy adsorption of OH- on the surface
of the bubbles, and a low pulp pH represents a low OH-
concentration. As the pH increases, the concentration of
OH- ions also increases. This leads to an increase in the
adsorption of OH- ions on the surface of NBs, resulting
in a negatively charged surface and a reduction in the zeta
potential of the slurry. The presence of NBs can lead to a
decrease in the electrostatic repulsion of the lepidolite par-
ticles, which promotes particle agglomeration and increases
the flotation effect, consistent with Figures 7 and 9.
CONCLUSIONS
In this study, the role of surface nanobubbles on the fine
lepidolite flotation with mixed cationic/anionic collector
was investigated. The results showed that NBs had a pro-
moting effect on the flotation of fine lepidolite by the mixed
cationic/anionic collectors. The size of NBs was larger
near the isoelectric point and NBs were more stable by
co-interaction with the mixed cationic/anionic collectors.
NBs adsorbed on the lepidolite surface further improved its
hydrophobicity on the basis of the mixed cationic/anionic
collectors. The presence of NBs can lead to a decrease in
electrostatic repulsion of the lepidolite particles, which
promotes particle agglomeration, increase the settling effi-
ciency of the samples, and enhances the flotation effect.
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] Liu, Y., Ma, B., Lü Y., Wang C., Chen Y., 2023. A
review of lithium extraction from natural resources[J].
Int. J. Min. Met. Mater. 30(2), 209–224.
[2] Dmytro, Y., Anatoliy M., 2021. Processing of lith-
ium ores: Industrial technologies and case studies – A
review[J]. Hydrometallurgy 201, 105578.
[3] Zhang, Z., Sanchidrián, J., Luukkanen, F., 2022.
Reduction of Fragment Size from Mining to Mineral
Processing: A Review[J]. Rock Mech. Rock Eng. 56,
1–32.
[4] Ren, L., Zhang, Z., Zeng, W., Zhang, Y., 2023.
Adhesion between nanobubbles and fine cassiterite
particles[J]. Int. J. Min. Sci. Technol. 2095–2686.
[5] Wang, D., Liu, Q., 2021. Hydrodynamics of froth
flotation and its effects on fine and ultrafine mineral
particle flotation: A literature review[J]. Miner. Eng.
173, 0892–6875.
[6] Saeed, F., Lev, F., Daniel, F., 2020. Flotation of Fine
Particles: A Review[J]. Miner. Process. Extr. M. 42(7),
473–483.
[7] Tao, D., 2022. Recent advances in fundamentals and
applications of nanobubble enhanced froth flotation:
A review[J]. Miner. Eng. 183, 0892–6875.
[8] Li, C., Zhang, H., 2022. Surface nanobubbles and
their roles in flotation of fine particles. A review[J]. J.
Ind. Eng. Chem. 106, 37–51.
[9] Ma, F., Zhang, P., Tao D., 2022. Surface nanobubble
characterization and its enhancement mechanisms for
fine-particle flotation: A review[J]. Int. J. Min. Met.
Mater. 29 (4), 727–738.
[10] Sun, L., Zhang, F., Guo, X., Qiao,Z., Zhu, Y., Jina,
n., Cui, y., Yang W., 2022. Research progress on bulk
nanobubbles[J]. Particuology 2022(1), 99–106.
[11] Chen, G., Ren, L., Zhang, Y., Bao, S., 2022.
Improvement of fine muscovite flotation through
nanobubble pretreatment and its mechanism[J].
Miner. Eng. 189, 107868.
[12] Wang, Y., Pan, Z., Luo, X., Qin, W., Jiao, F., 2019.
Effect of nanobubbles on adsorption of sodium oleate
on calcite surface[J]. Miner. Eng. 133, 127–137.
[13] Tao, D., Wu, Z., Sobhy, A., 2021. Investigation of
nanobubble enhanced reverse anionic flotation of
hematite and associated mechanisms[J]. Powder
Technol. 379, 12–25.
[14] Xu, L., Tian J., Wu, H., Lu Z., 2017.The flotation
and adsorption of mixed collectors on oxide and sili-
cate minerals[J]. Adv. Colloid Interface 250, 1–14.
[15] Xu, Y., Xu, L., Wu, H., Wang, Z., Shu, K., Fang,
S., Zhang, Z., 2020. Flotation and co–adsorp-
tion of mixed collectors octanohydroxamic acid/
sodium oleate on bastnaesite[J]. J. Alloy. Comp. 819,
0925–8388.
[16] Wang, L., Xu, R., Liu, R., Ge, P., Sun, W., Tian, M.,
2021. Self-assembly of naol-dda mixtures in aqueous
solution: A molecular dynamics’ simulation study[J].
Molecules 26(23), 7117.
[17] Wei Q., Feng L.Q., Dong L.Y., Jiao F., Qin W.Q.,
2021. Selective co-adsorption mechanism of a new
mixed collector on the flotation separation of lepido-
lite from quartz [J]. Colloids Surf. A: Physicochem.
Eng. Aspects. 612: 125973.
potential of lepidolite after adding NBs. This phenomenon
may be due to the easy adsorption of OH- on the surface
of the bubbles, and a low pulp pH represents a low OH-
concentration. As the pH increases, the concentration of
OH- ions also increases. This leads to an increase in the
adsorption of OH- ions on the surface of NBs, resulting
in a negatively charged surface and a reduction in the zeta
potential of the slurry. The presence of NBs can lead to a
decrease in the electrostatic repulsion of the lepidolite par-
ticles, which promotes particle agglomeration and increases
the flotation effect, consistent with Figures 7 and 9.
CONCLUSIONS
In this study, the role of surface nanobubbles on the fine
lepidolite flotation with mixed cationic/anionic collector
was investigated. The results showed that NBs had a pro-
moting effect on the flotation of fine lepidolite by the mixed
cationic/anionic collectors. The size of NBs was larger
near the isoelectric point and NBs were more stable by
co-interaction with the mixed cationic/anionic collectors.
NBs adsorbed on the lepidolite surface further improved its
hydrophobicity on the basis of the mixed cationic/anionic
collectors. The presence of NBs can lead to a decrease in
electrostatic repulsion of the lepidolite particles, which
promotes particle agglomeration, increase the settling effi-
ciency of the samples, and enhances the flotation effect.
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] Liu, Y., Ma, B., Lü Y., Wang C., Chen Y., 2023. A
review of lithium extraction from natural resources[J].
Int. J. Min. Met. Mater. 30(2), 209–224.
[2] Dmytro, Y., Anatoliy M., 2021. Processing of lith-
ium ores: Industrial technologies and case studies – A
review[J]. Hydrometallurgy 201, 105578.
[3] Zhang, Z., Sanchidrián, J., Luukkanen, F., 2022.
Reduction of Fragment Size from Mining to Mineral
Processing: A Review[J]. Rock Mech. Rock Eng. 56,
1–32.
[4] Ren, L., Zhang, Z., Zeng, W., Zhang, Y., 2023.
Adhesion between nanobubbles and fine cassiterite
particles[J]. Int. J. Min. Sci. Technol. 2095–2686.
[5] Wang, D., Liu, Q., 2021. Hydrodynamics of froth
flotation and its effects on fine and ultrafine mineral
particle flotation: A literature review[J]. Miner. Eng.
173, 0892–6875.
[6] Saeed, F., Lev, F., Daniel, F., 2020. Flotation of Fine
Particles: A Review[J]. Miner. Process. Extr. M. 42(7),
473–483.
[7] Tao, D., 2022. Recent advances in fundamentals and
applications of nanobubble enhanced froth flotation:
A review[J]. Miner. Eng. 183, 0892–6875.
[8] Li, C., Zhang, H., 2022. Surface nanobubbles and
their roles in flotation of fine particles. A review[J]. J.
Ind. Eng. Chem. 106, 37–51.
[9] Ma, F., Zhang, P., Tao D., 2022. Surface nanobubble
characterization and its enhancement mechanisms for
fine-particle flotation: A review[J]. Int. J. Min. Met.
Mater. 29 (4), 727–738.
[10] Sun, L., Zhang, F., Guo, X., Qiao,Z., Zhu, Y., Jina,
n., Cui, y., Yang W., 2022. Research progress on bulk
nanobubbles[J]. Particuology 2022(1), 99–106.
[11] Chen, G., Ren, L., Zhang, Y., Bao, S., 2022.
Improvement of fine muscovite flotation through
nanobubble pretreatment and its mechanism[J].
Miner. Eng. 189, 107868.
[12] Wang, Y., Pan, Z., Luo, X., Qin, W., Jiao, F., 2019.
Effect of nanobubbles on adsorption of sodium oleate
on calcite surface[J]. Miner. Eng. 133, 127–137.
[13] Tao, D., Wu, Z., Sobhy, A., 2021. Investigation of
nanobubble enhanced reverse anionic flotation of
hematite and associated mechanisms[J]. Powder
Technol. 379, 12–25.
[14] Xu, L., Tian J., Wu, H., Lu Z., 2017.The flotation
and adsorption of mixed collectors on oxide and sili-
cate minerals[J]. Adv. Colloid Interface 250, 1–14.
[15] Xu, Y., Xu, L., Wu, H., Wang, Z., Shu, K., Fang,
S., Zhang, Z., 2020. Flotation and co–adsorp-
tion of mixed collectors octanohydroxamic acid/
sodium oleate on bastnaesite[J]. J. Alloy. Comp. 819,
0925–8388.
[16] Wang, L., Xu, R., Liu, R., Ge, P., Sun, W., Tian, M.,
2021. Self-assembly of naol-dda mixtures in aqueous
solution: A molecular dynamics’ simulation study[J].
Molecules 26(23), 7117.
[17] Wei Q., Feng L.Q., Dong L.Y., Jiao F., Qin W.Q.,
2021. Selective co-adsorption mechanism of a new
mixed collector on the flotation separation of lepido-
lite from quartz [J]. Colloids Surf. A: Physicochem.
Eng. Aspects. 612: 125973.