The activation mechanism of lead ions in the flotation of ilmenite using sodium oleate as a collector

Pan, Chen; Zhai, Jihua; Sun, Wei; Hu, Yuehua; Yin, Zhoulan

doi:10.1016/j.mineng.2017.06.009

Cited by 103 publications

(13 citation statements)

References 41 publications

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“…The intensity and area of binding energy at 284.82 eV exhibited a significant increase on the surface of quartz being floated, and that of higher binding energies at 285.67 eV and 288.54 eV concurrently increased (Figure 9c, Table S3). On the other hand, the peak was observed to shift towards the lower binding energy from 286.30 to 285.67 eV in the presence of calcium ions and collector, indicating the chemisorption of reagent on the activated quartz surface [39]. These results can be well explained by the different effects of Ca 2+ on the flotation behavior of apatite, dolomite and quartz at a concentration of 2.5 × 10 −3 M.…”

Section: Xps Analyses and High-resolution Spectra Of Pure Mineralsmentioning

confidence: 82%

Effects of Metal Ions on the Flotation of Apatite, Dolomite and Quartz

et al. 2018

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Abstract:The effects of Ca 2+ , Mg 2+ , Al 3+ , and Fe 3+ on the flotation behaviors of apatite, dolomite and quartz were investigated through a micro-flotation test, and the influence of calcium ions on the flotation of these minerals was further elucidated by solution chemistry study, zeta potential measurement, and X-ray photoelectron spectroscopy (XPS) analyses. The results indicate that an appropriate amount of Ca 2+ and Mg 2+ can improve the floatability of apatite but had a negligible effect on the flotation performance of dolomite, whereas Al 3+ , Fe 3+ , and excessive amounts of Ca 2+ decreased the recovery of apatite and dolomite. The studied metal cations can activate quartz at a particular pH. It can be inferred from solution chemistry and zeta potential measurement that the influence of metal ions on the flotation of different minerals should be attributed to the adsorption of various hydrolysis species on the mineral surfaces. XPS analyses reveal that calcium ions can enhance the adsorption of anionic collector on apatite and quartz surfaces, and there are no apparent changes to be observed on the surface of dolomite in the absence and presence of calcium ions at a concentration of 2.5 × 10 −3 M, which was in good agreement with the micro-flotation results.

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Section: Xps Analyses and High-resolution Spectra Of Pure Mineralsmentioning

confidence: 82%

Effects of Metal Ions on the Flotation of Apatite, Dolomite and Quartz

et al. 2018

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“…At present, the main collectors that are being studied in ilmenite flotation are fatty acids or their salts [11][12][13][14]. However, one outstanding issue to be solved is that these collectors are not completely ionized, and they exist mostly in molecular forms under acidic conditions (the required pH range for practical yields from ilmenite), which generally leads to a low effectiveness of collector species in solution, and thus a lower recovery rate or a higher rate of collector consumption in flotation.…”

Section: Introductionmentioning

confidence: 99%

The Performance and Adsorption Mechanism of a Novel Collector, Dodecyl Dimethyl Betaine (BS-12), for the Flotation Separation of Ilmenite and Titanaugite

et al. 2020

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In this paper, a novel collector, dodecyl dimethyl betaine (BS-12), was used in the selective separation of ilmenite from titanaugite. The flotation performance and associated adsorption mechanism were studied by micro-flotation experiments, particle size analysis, Fourier-transform infrared (FT-IR) spectroscopy analysis, and X-ray photoelectron spectroscopy (XPS) analysis. The micro-flotation results indicated that BS-12 exhibited a stronger collecting ability towards ilmenite than titanaugite within an acidic pH range, and that the recovery of ilmenite was about 50% higher than that of titanaugite under the optimum flotation conditions. Particle size analysis demonstrated that BS-12 could selectively agglomerate ilmenite to a certain extent and then contribute to the flotation difference between ilmenite and titanaugite. FT-IR results showed some characteristic bands of BS-12 on treated ilmenite, and on titanaugite with BS-12. The XPS analysis further confirmed that BS-12 chemisorbed onto ilmenite and titanaugite in a similar way, but the limited active sites on titanaugite in comparison with ilmenite accounted for their differences in flotation.

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“…To understand the selective depression mechanism of PSSNa for the ilmenite/titanaugite system, electrokinetic potentials of the two minerals are detected in conditions with and without reagents. After testing, the isoelectric points of the raw titanaugite and ilmenite are 3.8 and 5.9, respectively, being in the range of previous reports [7,20], as shown in Figure 6. From Figure 6A,B, the variation in the electrokinetic potential of titanaugite is much greater than that of ilmenite before and after interaction with PSSNa, indicating a stronger adsorption of PSSNa on the titanaugite surface.…”

Section: Electrokinetic Potentialmentioning

confidence: 52%

Novel Selective Depressant of Titanaugite and Implication for Ilmenite Flotation

et al. 2019

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This paper studies the effects of sodium polystyrene sulfonate (PSSNa) used as a depressant upon the separation of ilmenite from titanaugite through flotation when sodium oleate (NaOl) is used as a collector by performing single mineral flotation experiments. The depression mechanism of PSSNa on titanaugite flotation was studied by electrokinetic potential and adsorbed amount measurements together with FTIR and XPS detection. Single mineral flotation experiments show that PSSNa is a selective depressant for the separation of ilmenite and titanaugite via flotation with NaOl as the collector. The results of the adsorbed amount tests show that the biggest distinction is in terms of the amount of NaOl adsorbed on the surfaces of ilmenite and titanaugite; the amount is expanded from 2.28 × 10 −7 to 9.34 × 10 −7 mol/m 2 when the dosage of PSSNa is 1 mg/L, as compared with no PSSNa, suggesting that PSSNa is a selective depressant when separating ilmenite and titanaugite through flotation. FTIR testing shows that chemisorption has occurred between the -SO 3 − groups of the molecular PSSNa and titanaugite surfaces. The results of further XPS testing reveal that PSSNa chemically interacts with Ca/Mg/Al/Fe on the titanaugite surface. The test results of FTIR in combination with XPS confirm that PSSNa stops NaOl from interacting with Mg, Fe, Al, and Ca on the titanaugite surface, and this outcome is the main reason for the widening of the adsorption quantity gap of NaOl on titanaugite and ilmenite surfaces, and titanaugite flotation is suppressed. The results of the comparison flotation testing on actual Panzhihua titanic iron ore (TiO 2 grade: 15.63%) with titanaugite as the main gangue show that a better effect is obtained by replacing sodium silicate (SS) with PSSNa, and the recovery of TiO 2 using PSSNa is higher than that when using sodium silicate. In a closed circuit flotation test, ilmenite concentrate is obtained with a TiO 2 grade of 45.97% and a recovery of 76.32% by using PSSNa as a titanaugite depressant.

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The activation mechanism of lead ions in the flotation of ilmenite using sodium oleate as a collector

Cited by 103 publications

References 41 publications

Effects of Metal Ions on the Flotation of Apatite, Dolomite and Quartz

Effects of Metal Ions on the Flotation of Apatite, Dolomite and Quartz

The Performance and Adsorption Mechanism of a Novel Collector, Dodecyl Dimethyl Betaine (BS-12), for the Flotation Separation of Ilmenite and Titanaugite

Novel Selective Depressant of Titanaugite and Implication for Ilmenite Flotation

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