XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2239
of 18.25 MΩ × cm, filled with UP water (various reagents
or samples were added under different test conditions),
depressurized to 0.01 MPa in a DZF-6050 vacuum dry-
ing oven for 20 minutes, and then returned to atmospheric
pressure. The presence of NB was confirmed by measuring
the particle size of NB in the UP water before and after
decompression using a Mal ZEN3690/nano zs90 nanopar-
ticle size analyser. For the flotation test, the reagents, lepid-
olite particles, and UP water were mixed and depressurized.
The depressurization process was accompanied by stirring
with a magnetic stirrer. After depressurization, the mixture
was transferred to the flotation cell, where it continued to
pass through the micro-nano bubble generator (Figure 3)
during the flotation process.
The particle size of NBs was analysed using a Mal
ZEN3690/nano zs90 nanoparticle size analyser to test the
water of NBs produced by decompression at different pH
values and different reagent conditions The settling phe-
nomenon of fine lepidolite particles in different environ-
mental solutions was observed by EoSens cube7 Mikrotron
high-speed camera with the magnification of 832×740,
frame rate of 494fps The 20 g fine lepidolite sample was
mixed thoroughly with 500ml of water, and the solution
was decompressed in a reduced pressure vessel for 0min,
5min, 10min, 20min and 40min, respectively, then settled
in a 500ml measuring cylinder for 4min, the settling dis-
tance is recorded A Nano-ZS90 Zeta Potentiometer was
used to measure the electrophoretic mobility of lepidolite
to examine the effect of different reagents and NBs on the
electric surface potential of the minerals.
Results and Discussion
Effect of NBs on Fine Lepidolites Flotation
Figures 4 and 5 demonstrate the effect of NBs on the flo-
tation of fine-grained lepidolite when DDA-HQ330 was
used as a collector. The recovery of lepidolite under both
conditions is shown in Figure 4, where it increases and then
Figure 3. Schematic diagram of NBs flotation
2 4 6 8 10 12
20
30
40
50
60
70
80
pH
UP water
NBs water
(The reagent concentration =60 mg/L)
Figure 4. Effect of pH on the flotation of fine lepidolite with NBs
Recovery%
,
of 18.25 MΩ × cm, filled with UP water (various reagents
or samples were added under different test conditions),
depressurized to 0.01 MPa in a DZF-6050 vacuum dry-
ing oven for 20 minutes, and then returned to atmospheric
pressure. The presence of NB was confirmed by measuring
the particle size of NB in the UP water before and after
decompression using a Mal ZEN3690/nano zs90 nanopar-
ticle size analyser. For the flotation test, the reagents, lepid-
olite particles, and UP water were mixed and depressurized.
The depressurization process was accompanied by stirring
with a magnetic stirrer. After depressurization, the mixture
was transferred to the flotation cell, where it continued to
pass through the micro-nano bubble generator (Figure 3)
during the flotation process.
The particle size of NBs was analysed using a Mal
ZEN3690/nano zs90 nanoparticle size analyser to test the
water of NBs produced by decompression at different pH
values and different reagent conditions The settling phe-
nomenon of fine lepidolite particles in different environ-
mental solutions was observed by EoSens cube7 Mikrotron
high-speed camera with the magnification of 832×740,
frame rate of 494fps The 20 g fine lepidolite sample was
mixed thoroughly with 500ml of water, and the solution
was decompressed in a reduced pressure vessel for 0min,
5min, 10min, 20min and 40min, respectively, then settled
in a 500ml measuring cylinder for 4min, the settling dis-
tance is recorded A Nano-ZS90 Zeta Potentiometer was
used to measure the electrophoretic mobility of lepidolite
to examine the effect of different reagents and NBs on the
electric surface potential of the minerals.
Results and Discussion
Effect of NBs on Fine Lepidolites Flotation
Figures 4 and 5 demonstrate the effect of NBs on the flo-
tation of fine-grained lepidolite when DDA-HQ330 was
used as a collector. The recovery of lepidolite under both
conditions is shown in Figure 4, where it increases and then
Figure 3. Schematic diagram of NBs flotation
2 4 6 8 10 12
20
30
40
50
60
70
80
pH
UP water
NBs water
(The reagent concentration =60 mg/L)
Figure 4. Effect of pH on the flotation of fine lepidolite with NBs
Recovery%
,