2238 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
mixed cationic/anionic collectors on NBs was elucidated
for the first time.
Experimental
Materials
The experiment employed lepidolite samples sourced from
Brazil. Results from the XRD analysis of lepidolite sample
used in the tests are presented in Figures 1. The figures indi-
cate that both lepidolite have high purity. The bulk samples
underwent a two-step crushing process, first using a dry
pulveriser and then a wet stirring mill, resulting in a D50
particle size of 10 μm. The samples were subsequently dried
at low temperature. The reagents used in this test included
DDA (Dodecyl amine), HQ330 (Anionic collector mainly
made of a mixture of sulfonates and carboxylates), NaOH
and H2SO4, which were purchased from Shanghai Aladdin
Biochemical Technology Co., Ltd. and were analytically
pure, except for HQ330, which was a self-developed com-
pound anionic collector with the composition of NaOL,
sodium dodecyl sulfate and oxidised paraffin soap, etc. The
water used in the test was ultrapure water (UP) with the
resistivity of 18.25 MΩ×cm.
Methods
Flotation tests were conducted using an XFG flotation
machine purchased from Jilin Exploration Machinery
Factory, Changchun, China. The machine had a flotation
cell capacity of 40 ml and a rotational speed of 1500 rpm.
The flotation test flow chart is shown in Figure 2. Each test
involved adding 2 g of lepidolite powder sample and 35
ml of ultrapure water to the flotation cell. The solution’s
pH was adjusted to 8 using NaOH and H2SO4. Then, the
collectors DDA and HQ330 were added based on the test
conditions. The froth product was manually scraped for
three minutes for each set of tests.
Characterization
The NB utilized in the test was produced through the
decompression method. The UP water container was sub-
merged in a 10% hydrochloric acid solution for one hour,
rinsed multiple times with UP water that has a resistivity
10 20 30 40 50 60 70 80
Lepidolite
Two-Theta, °
Figure 1. XRD pattern of the lepidolite sample
Figure 2. The flowsheet of micro flotation test
Intensity ,
a.u.
mixed cationic/anionic collectors on NBs was elucidated
for the first time.
Experimental
Materials
The experiment employed lepidolite samples sourced from
Brazil. Results from the XRD analysis of lepidolite sample
used in the tests are presented in Figures 1. The figures indi-
cate that both lepidolite have high purity. The bulk samples
underwent a two-step crushing process, first using a dry
pulveriser and then a wet stirring mill, resulting in a D50
particle size of 10 μm. The samples were subsequently dried
at low temperature. The reagents used in this test included
DDA (Dodecyl amine), HQ330 (Anionic collector mainly
made of a mixture of sulfonates and carboxylates), NaOH
and H2SO4, which were purchased from Shanghai Aladdin
Biochemical Technology Co., Ltd. and were analytically
pure, except for HQ330, which was a self-developed com-
pound anionic collector with the composition of NaOL,
sodium dodecyl sulfate and oxidised paraffin soap, etc. The
water used in the test was ultrapure water (UP) with the
resistivity of 18.25 MΩ×cm.
Methods
Flotation tests were conducted using an XFG flotation
machine purchased from Jilin Exploration Machinery
Factory, Changchun, China. The machine had a flotation
cell capacity of 40 ml and a rotational speed of 1500 rpm.
The flotation test flow chart is shown in Figure 2. Each test
involved adding 2 g of lepidolite powder sample and 35
ml of ultrapure water to the flotation cell. The solution’s
pH was adjusted to 8 using NaOH and H2SO4. Then, the
collectors DDA and HQ330 were added based on the test
conditions. The froth product was manually scraped for
three minutes for each set of tests.
Characterization
The NB utilized in the test was produced through the
decompression method. The UP water container was sub-
merged in a 10% hydrochloric acid solution for one hour,
rinsed multiple times with UP water that has a resistivity
10 20 30 40 50 60 70 80
Lepidolite
Two-Theta, °
Figure 1. XRD pattern of the lepidolite sample
Figure 2. The flowsheet of micro flotation test
Intensity ,
a.u.