Synthesis of a novel hydroxyl quaternary ammonium collector and its selective flotation separation of quartz from hematite

Liu, Wenbao; Tong, Kelin; Ding, Rui; Wang, Xinyang; Zhao, Panxing; Sun, Wenhan; Zhao, Qiang; Zhao, Sikai

doi:10.1016/j.mineng.2023.108109

Cited by 19 publications

(7 citation statements)

References 41 publications

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“…The results of the infrared spectra of quartz before and after pharmaceutical treatment are shown in Fig 9(b) . In the FTIR spectrum of quartz, the characteristic peaks located at 3416 cm -1 and 1618 cm -1 correspond to the stretching and bending vibrations of -OH (Si-OH) [ 58 ], respectively. The characteristic peaks distributed in the range of 400 cm -1 to 1200 cm -1 represent the vibrational peaks of Si-O bonds.…”

Section: Resultsmentioning

confidence: 99%

“…The peaks at 1185 cm -1 and 1076 cm -1 are stronger symmetric telescopic vibrational absorption peaks induced by SO 4 2 -, the peak at 865 cm -1 is an asymmetric telescopic vibrational absorption peak induced by SO 4 2-, and the peak at 609 cm -1 is an in-plane bending vibrational absorption peak [50,51]. In the FTIR spectrum of quartz, the characteristic peaks located at 3416 cm -1 and 1618 cm -1 correspond to the stretching and bending vibrations of -OH (Si-OH) [58], respectively. The characteristic peaks distributed in the range of 400 cm -1 to 1200 cm -1 represent the vibrational peaks of Si-O bonds.…”

Section: Ftir Resultsmentioning

confidence: 99%

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Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Li,

Xie,

et al. 2024

PLoS ONE

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High-density waste drilling fluid contains an abundance of recyclable weighting reagents, direct disposal can pollute the environment. In this paper, the primary mineral composition of a high-density waste drilling fluid from a well in the southwest oil and gas field was analyzed. This paper proposes β-cyclodextrin (β-CD) as a depressant for the recovery of barite from waste drilling fluid. The recovery process was investigated through inverse flotation experiments, and the mechanism was analyzed using zeta potential, contact angle analysis, and FTIR. The flotation experiments showed that under the SDS flotation system, when the pH was 9.0 and the amount of depressant β-CD was 900 g/t, the barite recovery and density reached the highest values, which were 87.41% and 4.042 g/cm3, respectively. Zeta potential experiments, contact angle analysis, and FTIR analysis indicate that β-CD adsorbed onto barite through enhancing the hydrophilicity of barite, electrostatic force adsorption, and strong adsorption, which could not be displayed by SDS through competitive adsorption. Furthermore, β-CD exhibited a selective inhibitory effect on barite and enabled reverse flotation. The mechanism model of the flotation separation process was established.

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Section: Resultsmentioning

confidence: 99%

Section: Ftir Resultsmentioning

confidence: 99%

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Li,

Xie,

et al. 2024

PLoS ONE

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“…It also can be seen that there was a red shift phenomenon of the peak in the spectrum of the quartz treated with the CPAO. The bending vibration absorption peak of the O-Si-O bond shifted from 459 cm −1 to 455 cm −1 , indicating that the O-Si-O bond participated in the adsorption process, and might have hydrogen bonding with the CPAO [36]. Therefore, it could be concluded that the CPAO adsorbed on the surface of the quartz mainly through electrostatic interaction and hydrogen bonding, which also explains the significant impact of the CPAO on mineral flotation performance by slurry pH.…”

Section: Ftir Analysismentioning

confidence: 99%

“…It can be seen from Figure 9b that before treatment with the CPAO, the infrared spectrum of the quartz was mainly the characteristic peaks (Si-O bond absorption peak) of the quartz [36]. The peak around 1084 cm −1 corresponded to the asymmetric stretching vibration absorption peak of the Si-O bond, the peaks around 776 cm −1 and 691 cm −1 corresponded to the symmetric vibration absorption peaks of the Si-O-Si bond, and the peak around 459 cm −1 corresponded to the bending vibration absorption peak of the O-Si-O bond [24,37].…”

Section: Ftir Analysismentioning

confidence: 99%

Study on Selective Adsorption Behavior and Mechanism of Quartz and Magnesite with a New Biodegradable Collector

Liu,

Zhao,

Zhang

et al. 2023

Separations

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Research on the efficient flotation desilication of low-grade magnesite is of great significance for the sustainable development of magnesium resources. Traditional collectors usually have some disadvantages, such as poor selectivity, severe environmental pollution, and weak water solubility. To strengthen the desilication flotation process of magnesite ore, the biodegradable surfactant, cocamidopropyl amine oxide (CPAO), was first utilized as the collector for the separation of the magnesite and quartz. The selective adsorption behavior and mechanism of the quartz and magnesite with the CPAO as the collector were studied through the micro-flotation experiments of the single mineral and the artificially mixed mineral, contact angle and atomic force microscopy (AFM) measurements, fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses. The flotation results indicated that the CPAO showed good selectivity and could effectively separate magnesite and quartz. When the concentration of the CPAO was 10.0 mg/L in the natural pulp pH (about 7.2), the concentrates with 97.67% MgO recovery and 45.62% MgO grade were obtained. The contact angle and AFM measurements indicated that the CPAO could selectively adsorb on the quartz surface rather than the magnesite surface to improve the interface difference between them, especially its surface hydrophobicity. The results of the FTIR and XPS analyses indicated that the CPAO is selectively adsorbed on the surface of the quartz, mainly through electrostatic interaction and hydrogen bonding. In conclusion, the CPAO had good selectivity and great potential as an effective collector in the reverse flotation desilication progress of magnesite.

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“…In iron ore cationic reverse flotation, the commonly used cationic reverse flotation collector is mostly dodecyl amine, which is different from that used in anionic reverse flotation technology; when using cationic reverse flotation technology to separate quartz and iron minerals, no additional activator is needed to show good recovery of quartz under weak alkaline conditions, but selectivity is poor and the cost is high. In addition, due to the strong frothing ability of dodecyl amine, the problem of defrothing also needs to be solved urgently [11][12][13]. With the continuous improvement in energy conservation and environmental protection requirements, the problems of both high preparation temperatures and high-use temperatures for iron ore flotation reagents have become increasingly prominent, seriously restricting the development of domestic iron mines.…”

Section: Introductionmentioning

confidence: 99%

Application and Mechanism of Mixed Anionic/Cationic Collectors on Reverse Flotation of Hematite

Wang,

Lu,

Han

2024

Minerals

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In order to enhance the reverse flotation effect of hematite, dodecyl trimethyl ammonium chloride (DTAC) and a mixed anionic/cationic collector of DTAC and tall oil were selected for flotation studies on quartz and hematite. Surface tension tests, FT-IR, XPS analysis, and molecular dynamics (MD) simulations were also conducted in order to investigate the interaction mechanism of the mixed collector on the quartz surface. The results revealed that, at a natural pH (approximately 7.0) and 298 K, and with a dosage of 20 mg/L for the mixed collector (mDTAC:mtall oil = 3:1) and 4 mg/L for causticized starch, the recovery rates of quartz and hematite were 94.67% and 8.69%, respectively. Compared to the use of a single DTAC, the mixed DTAC/tail oil collector enhanced the flotation effect under constant variables. Additionally, a comparison of temperature and surface tension for monomineral flotation and artificially mixed ore flotation tests showed that the mixed collector was less influenced by temperature, compared to the single DTAC, and exhibited good resistance and more effective separation of quartz and hematite at lower temperatures. The analysis of FT-IR, XPS, and MD simulations revealed that the single DTAC collector primarily adsorbed onto quartz through physical adsorption and hydrogen bonding, while the combination of tall oil and DTAC enhanced the adsorption of the collector on the quartz surface.

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Synthesis of a novel hydroxyl quaternary ammonium collector and its selective flotation separation of quartz from hematite

Cited by 19 publications

References 41 publications

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Flotation recovery of barite from high-density waste drilling fluid using β-cyclodextrin as a novel depressant and its mechanism

Study on Selective Adsorption Behavior and Mechanism of Quartz and Magnesite with a New Biodegradable Collector

Application and Mechanism of Mixed Anionic/Cationic Collectors on Reverse Flotation of Hematite

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