Differential adsorption of hydrolytic polymaleic anhydride as an eco-friendly depressant for the selective flotation of apatite from dolomite

Yang, Bin; Yin, Wanzhong; Zhu, Zhanglei; Sun, Haoran; Sheng, Qiuyue; Fu, Yanghe; Yao, Jin; Zhao, Kai

doi:10.1016/j.seppur.2020.117803

Cited by 104 publications

(14 citation statements)

References 60 publications

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“…The pulp was adjusted based on the flotation process. Finally, the solid fraction was washed three times with distilled water and dried at 313 K. For the measurements, a 1 mg sample was mixed with 100 mg of spectrally pure KBr and pulverized using an agate mortar [24,25]. The resulting mixture was then pressed into a thin specimen for analysis.…”

Section: Ftir Spectroscopy Measurementmentioning

confidence: 99%

Elimination of Ferric Ion Effect on Separation between Kyanite and Quartz Using Citric Acid as Regulator

Li¹,

Sun

et al. 2021

Minerals

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Ferric ions produced during grinding influence the flotation separation between kyanite and quartz adversely. In this study, citric acid was used as a regulator to eliminate the effect of ferric ions on the separation of kyanite from quartz with sodium oleate (NaOL) as a collector. The microflotation test results indicated that the quartz was selectively activated by FeCl3 and maintained significant quartz recovery. However, the citric acid could selectively eliminate the effect of ferric ions on the quartz and minimally influenced the kyanite. Contact angle tests demonstrated that FeCl3 significantly increased the interaction between NaOL and quartz, resulting in the high hydrophobicity of quartz, and the addition of citric acid made the quartz surface hydrophilic again but slightly influenced the kyanite. Fourier-transform infrared spectroscopy showed that FeCl3 facilitated NaOL adsorption onto the quartz surface, and the addition of citric acid eliminated the activation of FeCl3 on the quartz, resulting in the nonadsorption of NaOL onto the quartz surface. However, the FeCl3 and citric acid exhibited a negligible effect on NaOL adsorption onto the kyanite surface. X-ray photoelectron spectroscopy analysis indicated that the citric acid eliminated FeCl3 activation on the quartz.

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Section: Ftir Spectroscopy Measurementmentioning

confidence: 99%

Elimination of Ferric Ion Effect on Separation between Kyanite and Quartz Using Citric Acid as Regulator

Li¹,

Sun

et al. 2021

Minerals

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“…However, the different crystal structures of the two minerals could lead to the presence of different anionic groups on their surfaces. From the changing trend of Zeta potential, it could be seen that the dissolved phosphate ion on the surface of apatite would generate strong steric hindrance, which would affect the interaction between PASP and calcium ion on the surface of apatite through steric inhibition and repulsion, and it greatly restricted the adsorption of PASP on the surface of apatite (Yang et al, 2021;Chen et al, 2017). On the contrary, the steric hindrance caused by carbonate ion was weak, and the metal ion on the surface of dolomite, especially magnesium ion, were prone to chelating with the carboxylic acid ion in PASP (Jong et al, 2017;.…”

Section: Depression Mechanism Of Hpmamentioning

confidence: 99%

“…Although these acids can effectively inhibit apatite, excessive application can cause numerous challenges such as higher flotation costs, corrosion of flotation equipment, and serious water pollution (Shakoor et al,2021). Recently, several organic inhibitors have been exploited as dolomite inhibitors for the flotation separation of apatite and dolomite, such as acrylic acid-2-acrylamido-2methylpropanesulfonic acid copolymer , (poly(acrylic acid-co-maleic acid) sodium salt , hydrolytic polymaleic anhydride (Yang et al, 2021), xanthan gum (Zeng et al, 2021) and so on. These organic inhibitors are environmentally friendly, highly selective, non-toxic, etc.…”

Section: Introductionmentioning

confidence: 99%

Flotation separation of dolomite and apatite using polyaspartic acid as inhibitor

Kang

Zhang

2021

Physicochem. Probl. Miner. Process.

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In this paper, polyaspartic acid (PASP) was exploited as a novel dolomite depressant for flotation separation of apatite and dolomite. A series of tests with Zeta potential, FTIR and XPS were used to reveal the inhibitory mechanism of PASP on dolomite. The microflotation test illustrated that PASP has a strong inhibitory impact on dolomite, and little effect on the floatability of apatite in the pH range of 9-11. When using 2.7 Mg/L PASP as the depressant under sodium oleate (NaOl) system, the flotation recovery of dolomite dropped dramatically to 9.95%, and the recovery of apatite remained at about 88.27% at pH 10. Both dolomite and apatite have calcium ion on the surface. The calcium ion on the surface of apatite were strongly inhibited and repelled by the localized anions, while the important role on the surface of dolomite was positively charged magnesium ion and localized calcium species. PASP could ionize carboxylate ion under alkaline conditions, which could chemically chelate with the exposed metal ion and be adsorbed on the surface of dolomite. And then prevent the further adsorption of NaOl onto dolomite, which greatly weaken the floatability of dolomite and enhanced the flotation separation of the two minerals.

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“…The removed sample was washed with DI water and naturally dried by air before the contact angle determination. The advancing contact angle of DI water on the quartz (or fluorapatite) surface was performed via a sessile drop method [25] using a JY-82A contact angle goniometer (Chengde, China). Each measurement was repeatedly performed three times, and the average value with the standard deviation was reported.…”

Section: Contact Angle Determinationmentioning

confidence: 99%

Utilization of DTAB as a collector for the reverse flotation separation of quartz from fluorapatite

Liu

Huang

Rao

et al. 2021

Int J Miner Metall Mater

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Reverse flotation desilication is an indispensable step for obtaining high-grade fluorapatite. In this work, dodecyltrimethylammonium bromide (DTAB) is recommended as an efficient collector for the reverse flotation separation of quartz from fluorapatite. Its collectivity for quartz and selectivity for fluorapatite were also compared with figures corresponding to the conventional collector dodecylamine hydrochloride (DAC) via microflotation experiments. The adsorption behaviors of DTAB and DAC on minerals were systematically investigated with surface chemical analyses, such as contact angle determination, zeta potential detection, and adsorption density measurement. The results revealed that compared to DAC, DTAB displayed a similar and strong collectivity for quartz, and it showed a better selectivity (or worse collectivity) for fluorapatite, resulting in a high-efficiency separation of the two minerals. The surface chemical analysis results showed that the adsorption ability of DTAB on the quartz surface was as strong as that of DAC, whereas the adsorption amount of DTAB on the fluorapatite surface was much lower than that of DAC, which is associated with the flotation performance. During the floatation separation of the actual ore, 8wt% fluorapatite with a higher grade can be obtained using DTAB in contrast to DAC. Therefore, DTAB is a promising collector for the high-efficiency purification and sustainable utilization of valuable fluorapatite recourses.

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Differential adsorption of hydrolytic polymaleic anhydride as an eco-friendly depressant for the selective flotation of apatite from dolomite

Cited by 104 publications

References 60 publications

Elimination of Ferric Ion Effect on Separation between Kyanite and Quartz Using Citric Acid as Regulator

Elimination of Ferric Ion Effect on Separation between Kyanite and Quartz Using Citric Acid as Regulator

Flotation separation of dolomite and apatite using polyaspartic acid as inhibitor

Utilization of DTAB as a collector for the reverse flotation separation of quartz from fluorapatite

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