Improving flotation separation of apatite from dolomite using PAMS as a novel eco-friendly depressant

Yang, Bin; Zhu, Zhanglei; Sun, Haoran; Yin, Wanzhong; Hong, Jeong-Hwa; Cao, Shun‐an; Tang, Yuan; Zhao, Chen; Yao, Jin

doi:10.1016/j.mineng.2020.106492

Cited by 107 publications

(18 citation statements)

References 60 publications

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“…4(b), in the mixed mineral flotation, DTAB and DAC still showed a good collectivity to quartz with a flotation recovery of more than 95% when the collector concentration was no less than 5 × 10 −4 mol/L, which was in accordance with the single-mineral flotation results. However, compared to the single-mineral flotation, the fluorapatite recovery (froth production) in the mixed-mineral flotation was a little (approximately 4%) higher at each DTAB concentration, which might be attributed to the fluorapatite coating on the surface of the quartz particles [28]. Conversely, the fluorapatite recovery (froth production) in the mixed-mineral flotation was approximately 8% lower at each DAC concentration in contrast to the single-mineral flotation, implying that quartz had larger adsorption of DAC compared to fluorapatite and resulting in fewer fluorapatite particles collected in the froth production.…”

Section: Micro-flotation Resultsmentioning

confidence: 85%

“…In addition, the particle sizes of more than 87wt% actual ores used for the flotation separation test were less than 0.074 µm. The chemical analysis results revealed that the actual ore contained 28 The DTAB and DDA utilized in this study were provided by Shanghai Aladdin Biochemical Technology Co., Ltd., and the molecular structure of DTAB and DDA are described in Fig. 2.…”

Section: Minerals and Reagentsmentioning

confidence: 99%

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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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Section: Micro-flotation Resultsmentioning

confidence: 85%

Section: Minerals and Reagentsmentioning

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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“…Similar findings had also been reported in the previous literature. [15][16][17] The contact angle of fluorite and dolomite after treatment with OA (Figures 8b and 9b) dramatically increased to 90.87°and 88.06°, respectively, illustrating that OA could significantly enhance their hydrophobicity, which matched well with their good floatability using OA alone. When used SPEemulsified OA as collector, the contact angle of fluorite sharply increased to 115.32°(Figure 8c).…”

Section: Contact Angle Analysismentioning

confidence: 71%

The Effect of Oleic Acid Emulsification using SPE on Fluorite and Dolomite Flotation**

Wang

Hou

et al. 2021

ChemistryOpen

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Collector OA, oleic acid, is widely used industrially for fluorite flotation. Low selectivity, dispersibility and collecting capability of the OA collector are always observed. In this study, compared with flotation of dolomite, a collector mixture of OA and SPE (styrylphenol polyoxyethylene ether) demonstrated significantly better performances for the fluorite. An optimal mass ratio 4 : 1 OA : SPE was found, and the recovery of fluorite was increased from over 85 % to more than 94 % compared with pure OA. Furthermore, the dosage of the collector agent was reduced from 50 mg mL À 1 to 20 mg mL À 1 , which did not negatively impact the recovery of dolomite. The results from the contact angle tests indicated that SPE selectively increased the surface hydrophobicity of fluorite but had little effect on dolomite. Besides, zeta potential measurements and IR analyses revealed that the addition of SPE led to strong chemical adsorption on the surface of fluorite, resulting in a significant difference in the flotation performances of the two minerals. Therefore, SPEemulsified OA is corroborated to prompt more selectivity and collecting capability on flotation of fluorite over dolomite.

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“…Since low-grade phosphate ores must be processed to produce a high-quality phosphate concentrate, beneficiation procedures and reagents are crucial for achieving phosphate mineral separation. apatite is commonly linked with gangue minerals such as quartz, iron oxides, clays, and calcareous minerals in phosphate ores because it is one of the most important phosphorus-bearing minerals (e.g., dolomite and calcite) [5,6]. In the mineral processing, dolomite as a low-value mineral is usually removed from valuable minerals, such as apatite [7], magnesite [8], and rare earth minerals (e.g., monazite and bastnasite) [9].…”

Section: Introductionmentioning

confidence: 99%

“…Flotation is a separation and concentrate method that uses the physicochemical features of minerals to separate valuable minerals from gangue minerals [11][12][13], is regarded as the most effective method for removing dolomite from apatite [14]. Traditional fatty acid collectors, particularly oleic acid or its salts, are still the most widely used to separate apatite from dolomite because they are simple to make and inexpensive [3,6]. However, because of the non-selective adsorption behavior of these collectors towards both minerals by interacting with adsorption sites, the separation efficiency is still not sufficient [9,15].…”

Section: Introductionmentioning

confidence: 99%

Flotation Separation of Dolomite from Fluorapatite Using Sodium Dodecyl Benzene Sulfonate as the Efficient Collector under Low Temperature

et al. 2022

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Flotation is the most often employed process to achieve the selective removal of contaminants from the raw materials used in the manufacturing of phosphate fertilizer. However, sodium oleate (NaOL), as a typical collector, is ineffective because of its low collecting ability under low temperature. As a result, developing and implementing feasible alternatives is critical for the long-term output of mines. In this study, sodium dodecyl benzene sulfonate (SDBS), a low-cost and freely soluble reagent under low temperature was used to examine its collecting ability and selectivity in a fluorapatite-dolomite system by means of single and artificially mixed minerals flotation. The adsorption mechanism was evaluated with the help of XPS analyses. The flotation results demonstrate that SDBS could float both fluorapatite and dolomite, but show a higher affinity towards fluorapatite instead of dolomite. Moreover, SDBS could preferred adsorb onto fluorapatite surface when fluorapatite and dolomite coexist. SDBS is more suitable than NaOL for satisfactory recovery of fluorapatite under low temperature in terms of the higher recovery obtained. The XPS analyses results demonstrate that the adsorption of SDBS on fluorapatite surface was more intensively as opposed to that on dolomite surface and Ca active sites on fluorapatite surface are supposed to be the main location for SDBS attachment.

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Improving flotation separation of apatite from dolomite using PAMS as a novel eco-friendly depressant

Cited by 107 publications

References 60 publications

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

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

The Effect of Oleic Acid Emulsification using SPE on Fluorite and Dolomite Flotation**

Flotation Separation of Dolomite from Fluorapatite Using Sodium Dodecyl Benzene Sulfonate as the Efficient Collector under Low Temperature

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