XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 2751
bubbles on mineral flotation recovery. The difference lies in
whether the flotation water contains micro-nano bubbles.
Deionized water was used for experimenting, and prepar-
ing reagents and aqueous solutions containing micro-nano
bubbles. The aqueous solution containing micro-nano
bubbles was prepared based on the principle of hydraulic
cavitation. The preparation conditions were a cavitation gas
volume of 100 ml/min, cavitation time of 5 min, cavitation
intensity (peristaltic pump speed) of 250 rpm, and MIBC
concentration of 60 mg/L. Figure 2 shows the cavitation
equipment and the Pixact online in-situ bubble detection
system to obtain bubble photos at different stages.
It should be noted that the calculation equation for
separation efficiency in mixed ores is as follows:
(
(Separation efficiency
1 #c a d a)
d b a) =-
-(1)
In the equation, γ1 is the flotation tailings yield, %α and β
are the SiO2 grades in the raw ore and tailings, respectively,
%δ is the SiO2 grade in the chlorite, %.
Infrared spectrum detection requires 2g of mineral sample
with a particle size of –5 μm were placed in a beaker, and
50 ml of deionized water was added. The mixture was
stirred using a magnetic stirrer, and the slurry pH was
adjusted. When the pH of the slurry reached 11, calcium
chloride, and α-BLA were sequentially added with stirring
for 3 minutes each and an additional 10 minutes of stirring.
After the minerals and reagents have fully reacted, the mix-
ture was filtered and dried. It should be noted that the filter
cake needs to be rinsed multiple times during the filtration
process to prevent the deposition of reagents on the mineral
surface. X-ray photoelectron spectroscopy (XPS) uses the
Al Kα target as the laser source and detects under emission
power 150 w. The sample preparation method is similar
15 30 45 60 75 90
(a)
Hematite PDF# 96-901-5965
2Theta (Degree)
10 20 30 40 50 60 70
(b)
Chlorite PDF# 96-900-9234
2Theta (Degree)
Figure 1. Phase analysis results of samples (a-hematite, b-chlorite)
Figure 2. Micro-nano bubble flotation system and photos of bubbles at different stages
Intensity
(a.u.)
intensity
(a.u.)
bubbles on mineral flotation recovery. The difference lies in
whether the flotation water contains micro-nano bubbles.
Deionized water was used for experimenting, and prepar-
ing reagents and aqueous solutions containing micro-nano
bubbles. The aqueous solution containing micro-nano
bubbles was prepared based on the principle of hydraulic
cavitation. The preparation conditions were a cavitation gas
volume of 100 ml/min, cavitation time of 5 min, cavitation
intensity (peristaltic pump speed) of 250 rpm, and MIBC
concentration of 60 mg/L. Figure 2 shows the cavitation
equipment and the Pixact online in-situ bubble detection
system to obtain bubble photos at different stages.
It should be noted that the calculation equation for
separation efficiency in mixed ores is as follows:
(
(Separation efficiency
1 #c a d a)
d b a) =-
-(1)
In the equation, γ1 is the flotation tailings yield, %α and β
are the SiO2 grades in the raw ore and tailings, respectively,
%δ is the SiO2 grade in the chlorite, %.
Infrared spectrum detection requires 2g of mineral sample
with a particle size of –5 μm were placed in a beaker, and
50 ml of deionized water was added. The mixture was
stirred using a magnetic stirrer, and the slurry pH was
adjusted. When the pH of the slurry reached 11, calcium
chloride, and α-BLA were sequentially added with stirring
for 3 minutes each and an additional 10 minutes of stirring.
After the minerals and reagents have fully reacted, the mix-
ture was filtered and dried. It should be noted that the filter
cake needs to be rinsed multiple times during the filtration
process to prevent the deposition of reagents on the mineral
surface. X-ray photoelectron spectroscopy (XPS) uses the
Al Kα target as the laser source and detects under emission
power 150 w. The sample preparation method is similar
15 30 45 60 75 90
(a)
Hematite PDF# 96-901-5965
2Theta (Degree)
10 20 30 40 50 60 70
(b)
Chlorite PDF# 96-900-9234
2Theta (Degree)
Figure 1. Phase analysis results of samples (a-hematite, b-chlorite)
Figure 2. Micro-nano bubble flotation system and photos of bubbles at different stages
Intensity
(a.u.)
intensity
(a.u.)