5
was implemented in the seventh cell of on a rougher line
during the first quarter of 2023. The process assessment for
this development included single sampling campaign for
the period before and the period after, it also comprised
operational parameters evaluation during the trial period.
The Spider Crowder Upgrade resulted in:
1. Crowding increase in the froth zone from 34.5%
to 56.6%.
2. Increase in mass pull from 13.9 tph to 17.5 tph.
This relates to an increase in froth carrying rate
from 0.49 t/m2h to 0.86 t/m2h.
3. Decrease in airflow rate from 2731 m3/h to
2353 m3/h, resulting in 16% reduction.
4. Increase in froth depth from 266.3 mm to
311.7 mm, resulting in 17% rise.
Although this Spider Crowder upgrade was developed and
tested in 630 m3 cell, but it can also be used in 300 m3
or smaller cells that already have Center Launder but still
require more crowding.
REFERENCES
[1] Bermudez, G. (2021). Enhancing flotation cells for
increased sustainable production—MINING.COM.
Retrieved December 19, 2021, from www.mining
.com/sponsored-content/enhancing-flotation-cells
-for-increased-sustainable-production/.
[2] Bermudez, G., Amelunxen, P., Medina, M., Taylor,
M., Dube, R. (2021). Copper and molybdenum
recovery increased by upgrading flotation cells with
center launders at Hudbay Constancia. SME Annual
Meeting (pp. 1–5). Denver: SME.
[3] Bermudez, G., Perkins, T., Sorensen, R., Smith, C.,
Lanch, B., Moyo, J., Dube, R., Brandstrom, M.
(2022) Froth launder modification in 300 m3 flota-
tion cells at Kennecott Copperton Concentrator.
SME Annual Meeting (pp. 22–092). Salt Lake City:
SME.
[4] Coleman, R., 2009. Flotation Cells: Selecting the
Correct Concentrate Launder Design. Filtration and
Separation, 46 p. 36–37.
[5] Corona, M., Bermudez, G., Dube, R., Jalili, A.
(2021). Recent advances in flotation cell froth
management. CIM Virtual Convention and Expo.
Westmount: CIM Journal.
[6] Liu, W., Bolookhuu, O., Bermudez, G., Dube, R.,
Copper, G., Hill, K., Kashuba, D. (2022). Flotation
launder upgrade effect on coarse particle recovery
at Bagdad Copper and Molybdenum Concentrator.
CIM BC 2022 Convention and Expo. Retrieved
from September 1, 2023, from CIM Academy.
[7] Mesa, D. and Brito-Parada, P.R., 2019. Scale-up in
Froth Flotation: A State-of-the-Art Review. Separation
and Purification Technology, 210 p. 950–962.
[8] Morgan, S. (2018). Flotation launder design, does
it matter? OUTOTEC SEAP Customer eNewsletter
3/2018, p. 5–7.
[9] Seaman, D. R., Li, k., Lamson, G., Seaman, B. A.,
Adams M. H. (2021). Overcoming rougher residence
time limitation in the rougher flotation bank at Red
Chris Mine. Proceedings of 15th Mill Operators
Conference, p.193–207.
was implemented in the seventh cell of on a rougher line
during the first quarter of 2023. The process assessment for
this development included single sampling campaign for
the period before and the period after, it also comprised
operational parameters evaluation during the trial period.
The Spider Crowder Upgrade resulted in:
1. Crowding increase in the froth zone from 34.5%
to 56.6%.
2. Increase in mass pull from 13.9 tph to 17.5 tph.
This relates to an increase in froth carrying rate
from 0.49 t/m2h to 0.86 t/m2h.
3. Decrease in airflow rate from 2731 m3/h to
2353 m3/h, resulting in 16% reduction.
4. Increase in froth depth from 266.3 mm to
311.7 mm, resulting in 17% rise.
Although this Spider Crowder upgrade was developed and
tested in 630 m3 cell, but it can also be used in 300 m3
or smaller cells that already have Center Launder but still
require more crowding.
REFERENCES
[1] Bermudez, G. (2021). Enhancing flotation cells for
increased sustainable production—MINING.COM.
Retrieved December 19, 2021, from www.mining
.com/sponsored-content/enhancing-flotation-cells
-for-increased-sustainable-production/.
[2] Bermudez, G., Amelunxen, P., Medina, M., Taylor,
M., Dube, R. (2021). Copper and molybdenum
recovery increased by upgrading flotation cells with
center launders at Hudbay Constancia. SME Annual
Meeting (pp. 1–5). Denver: SME.
[3] Bermudez, G., Perkins, T., Sorensen, R., Smith, C.,
Lanch, B., Moyo, J., Dube, R., Brandstrom, M.
(2022) Froth launder modification in 300 m3 flota-
tion cells at Kennecott Copperton Concentrator.
SME Annual Meeting (pp. 22–092). Salt Lake City:
SME.
[4] Coleman, R., 2009. Flotation Cells: Selecting the
Correct Concentrate Launder Design. Filtration and
Separation, 46 p. 36–37.
[5] Corona, M., Bermudez, G., Dube, R., Jalili, A.
(2021). Recent advances in flotation cell froth
management. CIM Virtual Convention and Expo.
Westmount: CIM Journal.
[6] Liu, W., Bolookhuu, O., Bermudez, G., Dube, R.,
Copper, G., Hill, K., Kashuba, D. (2022). Flotation
launder upgrade effect on coarse particle recovery
at Bagdad Copper and Molybdenum Concentrator.
CIM BC 2022 Convention and Expo. Retrieved
from September 1, 2023, from CIM Academy.
[7] Mesa, D. and Brito-Parada, P.R., 2019. Scale-up in
Froth Flotation: A State-of-the-Art Review. Separation
and Purification Technology, 210 p. 950–962.
[8] Morgan, S. (2018). Flotation launder design, does
it matter? OUTOTEC SEAP Customer eNewsletter
3/2018, p. 5–7.
[9] Seaman, D. R., Li, k., Lamson, G., Seaman, B. A.,
Adams M. H. (2021). Overcoming rougher residence
time limitation in the rougher flotation bank at Red
Chris Mine. Proceedings of 15th Mill Operators
Conference, p.193–207.