2256 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
During tests execution it has been challenging to main-
tain constant pulp volume in the cell due to the presence
of cooling blocks necessary to sustain lower temperatures.
This methodological issue might have provoked slight fluc-
tuations in the obtained results. However, the observed
trends in Cu-grade and recovery with temperatures varia-
tion remain valid and hence do shed light on the role of
temperature on slag floatability. These observations high-
light the need to careful consider temperature effects when
optimizing flotation. The recovery of Cu-bearing phases in
the slag could be enhanced on that basis while minimizing
the entrainment of undesirable gangue minerals.
The selection of collectors should be carefully evalu-
ated, taking into account their solubility and dispersibility
properties at the different temperature ranges. For the cop-
per associated with the sulfides which demonstrates poor
metallurgical performance under ‘cold’ conditions, choos-
ing different collector with enhanced performance at low
temperature could be proposed. Current study observa-
tions suggest faster dispersion and rapid intrinsic adsorp-
tion of the reagents at higher temperatures.
ACKNOWLEDGMENTS
The authors wish to express their gratitude to Aurubis
Bulgaria AD for the entire support and collaboration dur-
ing work execution and for the permission to communicate
the results.
REFERENCES
Adam, K., Natarajan, K. A., &Iwasaki, I. (1984). Grinding
media wear and its effect on the flotation of sulfide
minerals. International journal of mineral processing,
12(1–3), 39–54.
Bruckard, W. J., Sparrow, G. J., &Woodcock, J. T. (2011).
A review of the effects of the grinding environment on
the flotation of copper sulphides. International Journal
of Mineral Processing, 100(1‑2), 1–13.
Gonçalves, K. L. C., Andrade, V. L., &Peres, A. E. C.
(2003). The effect of grinding conditions on the flota-
tion of a sulphide copper ore. Minerals engineering,
16(11), 1213–1216.
Grano, S. (2009). The critical importance of the grind-
ing environment on fine particle recovery in flotation.
Minerals engineering, 22(4), 386–394.
Greet, C. J., Small, G. L., Steinier, P., &Grano, S. R.
(2004). The Magotteaux Mill ®: investigating the effect
of grinding media on pulp chemistry and flotation per-
formance. Minerals Engineering, 17(7–8), 891–896.
Huang, G., &Grano, S. (2005). Galvanic interaction of
grinding media with pyrite and its effect on floatation.
Minerals engineering, 18(12), 1152–1163.
Ekmekçi, Z., Buswell, M. A., Bradshaw, D. J., Harris, P.
J. (2005). The value and limitations of electrochemi-
cal measurements in flotation of precious metal ores.
Minerals Engineering, 825–831, doi: 10.1016/j.mineng
.2005.01.026.
O’Connor, C. T., Dunne, R. C., &De Sousa, A. M. R. B.
(1984). The effect of temperature on the flotation of
pyrite. J. S. Afr. Inst. Min. Metall., 84(12), 389–394.
O’Connor, C. T., &Mills, P. J. T. (1990). The effect of tem-
perature on the pulp and froth phases in the flotation
of pyrite. Minerals Engineering, 3(6), 615–624.
Pashkevich, D., Li, R., &Waters, K. (2022). Temperature
and climate-induced fluctuations in froth flota-
tion: an overview of different ore types. In Canadian
Metallurgical Quarterly. Taylor and Francis Ltd. doi:
10.1080/00084433.2022.2127788.
Shamsuddin, M. (2021). Metallurgical Slag. Minerals,
Metals and Materials Series, 107–148. doi: 10.1007
/978-3-030-58069-8_4/FIGURES/12.
Sibanda, V., Sipunga, E., Danha, G., &Mamvura, T. A.
(2020). Enhancing the flotation recovery of copper
minerals in smelter slags from Namibia prior to dis-
posal. Heliyon, 6(1).
During tests execution it has been challenging to main-
tain constant pulp volume in the cell due to the presence
of cooling blocks necessary to sustain lower temperatures.
This methodological issue might have provoked slight fluc-
tuations in the obtained results. However, the observed
trends in Cu-grade and recovery with temperatures varia-
tion remain valid and hence do shed light on the role of
temperature on slag floatability. These observations high-
light the need to careful consider temperature effects when
optimizing flotation. The recovery of Cu-bearing phases in
the slag could be enhanced on that basis while minimizing
the entrainment of undesirable gangue minerals.
The selection of collectors should be carefully evalu-
ated, taking into account their solubility and dispersibility
properties at the different temperature ranges. For the cop-
per associated with the sulfides which demonstrates poor
metallurgical performance under ‘cold’ conditions, choos-
ing different collector with enhanced performance at low
temperature could be proposed. Current study observa-
tions suggest faster dispersion and rapid intrinsic adsorp-
tion of the reagents at higher temperatures.
ACKNOWLEDGMENTS
The authors wish to express their gratitude to Aurubis
Bulgaria AD for the entire support and collaboration dur-
ing work execution and for the permission to communicate
the results.
REFERENCES
Adam, K., Natarajan, K. A., &Iwasaki, I. (1984). Grinding
media wear and its effect on the flotation of sulfide
minerals. International journal of mineral processing,
12(1–3), 39–54.
Bruckard, W. J., Sparrow, G. J., &Woodcock, J. T. (2011).
A review of the effects of the grinding environment on
the flotation of copper sulphides. International Journal
of Mineral Processing, 100(1‑2), 1–13.
Gonçalves, K. L. C., Andrade, V. L., &Peres, A. E. C.
(2003). The effect of grinding conditions on the flota-
tion of a sulphide copper ore. Minerals engineering,
16(11), 1213–1216.
Grano, S. (2009). The critical importance of the grind-
ing environment on fine particle recovery in flotation.
Minerals engineering, 22(4), 386–394.
Greet, C. J., Small, G. L., Steinier, P., &Grano, S. R.
(2004). The Magotteaux Mill ®: investigating the effect
of grinding media on pulp chemistry and flotation per-
formance. Minerals Engineering, 17(7–8), 891–896.
Huang, G., &Grano, S. (2005). Galvanic interaction of
grinding media with pyrite and its effect on floatation.
Minerals engineering, 18(12), 1152–1163.
Ekmekçi, Z., Buswell, M. A., Bradshaw, D. J., Harris, P.
J. (2005). The value and limitations of electrochemi-
cal measurements in flotation of precious metal ores.
Minerals Engineering, 825–831, doi: 10.1016/j.mineng
.2005.01.026.
O’Connor, C. T., Dunne, R. C., &De Sousa, A. M. R. B.
(1984). The effect of temperature on the flotation of
pyrite. J. S. Afr. Inst. Min. Metall., 84(12), 389–394.
O’Connor, C. T., &Mills, P. J. T. (1990). The effect of tem-
perature on the pulp and froth phases in the flotation
of pyrite. Minerals Engineering, 3(6), 615–624.
Pashkevich, D., Li, R., &Waters, K. (2022). Temperature
and climate-induced fluctuations in froth flota-
tion: an overview of different ore types. In Canadian
Metallurgical Quarterly. Taylor and Francis Ltd. doi:
10.1080/00084433.2022.2127788.
Shamsuddin, M. (2021). Metallurgical Slag. Minerals,
Metals and Materials Series, 107–148. doi: 10.1007
/978-3-030-58069-8_4/FIGURES/12.
Sibanda, V., Sipunga, E., Danha, G., &Mamvura, T. A.
(2020). Enhancing the flotation recovery of copper
minerals in smelter slags from Namibia prior to dis-
posal. Heliyon, 6(1).