2880 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
Mechanical Cell Benchmark
Bench-scale flotation tests with a conventional laboratory
flotation machine were conducted during the test work
program. It is carried out with Metso’s -GTK LabCell ™
flotation machine in a 4-liter cell. The parameters of the
mechanical cell batch tests are found in Table 3.
Mineralogical Studies
Polished resin sections were prepared out of selected test
work samples for mineralogical studies. The samples were
initially examined using a Zeiss reflective optical micro-
scope. Subsequently, they were coated with a layer of
approximately 10 nm carbon and further analysed with a
JEOL JSM-7000F field emission scanning electron micro-
scope (FE-SEM) equipped with an Oxford Instruments
energy dispersive spectrometer (EDS). The imaging and
EDS analyses were performed under routine conditions
using 20 kV acceleration voltage and 1 nA beam current.
IMPACT OF OPERATING AND DESIGN
PARAMETERS
Froth Crowding
Launders and crowders are the main froth management
tool (Coleman, 2009 Contreras et al., 2013 Grau et al.,
2019 Jalili et al., 2023). Scoping tests on the Concorde
Cell showed very low mass pull and a somewhat unstable
Figure 2. Concorde Cell Lab Unit at the Metso Research Center (Pori, Finland)
Table 2. Operating and design parameters of the LGT tests
Test Code APR
Wash
Water Crowder
Flotation
Time, min SIBX, g/t
Aero 3477,
g/t
Senfroth,
g/t
1 0,8 No No 20 170 170 30,6
2 0,6 No No 20 170 170 30,6
3 0,6 No Yes 20 170 170 30,6
4 0,6 Yes Yes 20 170 170 30,6
Table 3. Parameters of the Outotec-GTK flotation cell
Stream Test Code
Air Flowrate,
L/min
Flotation
Time, min SIBX, g/t
Aero 3477,
g/t Senfroth, g/t
HGT Mech_1 3 24,5 80 80 20
HGT Mech_2 3 24,5 80 40 20
LGT Mech_1 3 24,5 80 80 20
LGT Mech_2 3 24,5 80 40 20
Mechanical Cell Benchmark
Bench-scale flotation tests with a conventional laboratory
flotation machine were conducted during the test work
program. It is carried out with Metso’s -GTK LabCell ™
flotation machine in a 4-liter cell. The parameters of the
mechanical cell batch tests are found in Table 3.
Mineralogical Studies
Polished resin sections were prepared out of selected test
work samples for mineralogical studies. The samples were
initially examined using a Zeiss reflective optical micro-
scope. Subsequently, they were coated with a layer of
approximately 10 nm carbon and further analysed with a
JEOL JSM-7000F field emission scanning electron micro-
scope (FE-SEM) equipped with an Oxford Instruments
energy dispersive spectrometer (EDS). The imaging and
EDS analyses were performed under routine conditions
using 20 kV acceleration voltage and 1 nA beam current.
IMPACT OF OPERATING AND DESIGN
PARAMETERS
Froth Crowding
Launders and crowders are the main froth management
tool (Coleman, 2009 Contreras et al., 2013 Grau et al.,
2019 Jalili et al., 2023). Scoping tests on the Concorde
Cell showed very low mass pull and a somewhat unstable
Figure 2. Concorde Cell Lab Unit at the Metso Research Center (Pori, Finland)
Table 2. Operating and design parameters of the LGT tests
Test Code APR
Wash
Water Crowder
Flotation
Time, min SIBX, g/t
Aero 3477,
g/t
Senfroth,
g/t
1 0,8 No No 20 170 170 30,6
2 0,6 No No 20 170 170 30,6
3 0,6 No Yes 20 170 170 30,6
4 0,6 Yes Yes 20 170 170 30,6
Table 3. Parameters of the Outotec-GTK flotation cell
Stream Test Code
Air Flowrate,
L/min
Flotation
Time, min SIBX, g/t
Aero 3477,
g/t Senfroth, g/t
HGT Mech_1 3 24,5 80 80 20
HGT Mech_2 3 24,5 80 40 20
LGT Mech_1 3 24,5 80 80 20
LGT Mech_2 3 24,5 80 40 20