Efficient separation of magnesite and quartz using eco-friendly Dimethylaminopropyl lauramide experimental and mechanistic studies

Zhao, Panxing; Liu, Wenbao; Wang, Xinyang; Tong, Kelin; Shen, Yanbai; Zhao, Sikai; Zhou, Shijie

doi:10.1016/j.mineng.2022.107814

Cited by 31 publications

(5 citation statements)

References 46 publications

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“…The surface morphology of the quartz and magne- It can be seen from Figure 7 that the contact angles of the quartz and magnesite before the treatment with the collector were 40.66 • and 41.89 • , respectively. The results were similar to those of previous relevant reports, and the contact angles of the magnesite and quartz were low, indicating that the natural flotability of the magnesite and quartz was poor [10,12,28]. After treatment with the 10.0 mg/L CPAO, the contact angle of the quartz surface changed significantly and increased from 40.66 • to 72.07 • , whereas the contact angle of the magnesite surface had little change and only increased from 41.89 • to 43.65 • .…”

Section: Afm Analysissupporting

confidence: 91%

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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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Section: Afm Analysissupporting

confidence: 91%

“…Reverse flotation desilication with the simple reagent system is one of the most common methods to separate magnesite from the quartz [1,10]. During this process, a small amount of the quartz particles rise with the bubbles in the pulp, which are the flotation tailings.…”

Section: Introductionmentioning

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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“…Reverse flotation reagents for magnesite and dolomite are important subjects of quantum chemical studies directed at dolomite. Sun et al [91] adopted dodecane-1,2-diyl bis (dihydrogen phosphate) (DBDP), and Zhao et al [92] introduced dimethylaminopropyl lauramide (DPLA) as dolomite collectors in magnesite-dolomite reverse flotation. The DFT simulations, micro-flotation tests, contact angle and zeta potential measurements, and FTIR and atomic force microscopy (AFM) analyses verified their potential for industrial applications.…”

Section: Other Non-ferrous Oxide Mineralsmentioning

confidence: 99%

Application of Quantum Chemistry in the Study of Flotation Reagents

Tang,

Chen,

Chen

et al. 2023

Minerals

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Flotation reagents are significant for modifying the interfacial characteristics of mineral grains to achieve the effective separation of minerals. Since the 1960s, when quantum chemistry was first introduced into the study of flotation reagents, many achievements have been made, although some controversial topics remain. The application of quantum chemistry in the research of flotation reagents for the separation of various minerals in the past decade is herein comprehensively and systematically reviewed. The main directions and gaps of current research are pointed out, the theoretical basis for the design and development of novel flotation reagents is summarized, and more importantly, the potential for the targeting design and development of efficient, selective, and environmentally friendly flotation reagent molecules by means of quantum chemistry is explored.

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“…Researchers such as Zhu et al have studied the flotation performance of alkyl diamine ether (GE-609) on quartz and investigated the flotation mechanism [27]. Zhao et al studied the flotation ability of an amide-type surfactant, dimethylaminopropyl lauramide (DPLA), on quartz when it was used as the collector, and analyzed the adsorption mechanism [28]. Liu et al synthesized a novel collector N-dodecylethylenediamine (ND) and proved that ND has an excellent flotation effect on quartz [29].…”

Section: Introductionmentioning

confidence: 99%

Novel Hydroxyl-Containing Quaternary Ammonium Salt N-(2-Hydroxyethyl)-N, N-Dimethyl-3-[(1-Oxododecyl)amino]-1-Propanaminium: Its Synthesis and Flotation Performance to Quartz

et al. 2023

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In this paper, a novel hydroxyl-containing quaternary ammonium surfactant N-(2-Hydroxyethyl)-N, N-dimethyl-3-[(1-oxododecyl)amino]-1-propanaminium (LPDC) was synthesized and introduced as a collector for the reverse cationic flotation separation of apatite from quartz; the adsorption mechanisms between LPDC and two mineral surfaces were investigated by Fourier transform infrared spectrometer (FTIR), zeta potential measurements and X-ray photoelectron spectroscopy (XPS) analysis. The micro-flotation tests showed that LPDC exhibited excellent flotation performance. When the pulp was at natural pH and LPDC concentration was 25 mg/L, the apatite concentrate with a P2O5 recovery of 95.45% and P2O5 grade of 38.94% could be obtained from artificially mixed minerals. FTIR, zeta potential, and XPS analysis indicated that the adsorption of LPDC onto quartz surface is stronger than that onto apatite surface; meanwhile, the adsorption of LPDC onto quartz surface is mainly provided by electrostatic force and hydrogen bonding.

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Efficient separation of magnesite and quartz using eco-friendly Dimethylaminopropyl lauramide experimental and mechanistic studies

Cited by 31 publications

References 46 publications

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

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

Application of Quantum Chemistry in the Study of Flotation Reagents

Novel Hydroxyl-Containing Quaternary Ammonium Salt N-(2-Hydroxyethyl)-N, N-Dimethyl-3-[(1-Oxododecyl)amino]-1-Propanaminium: Its Synthesis and Flotation Performance to Quartz

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