N-(6-(hydroxyamino)-6-oxohexyl) decanamide collector: Flotation performance and adsorption mechanism to diaspore

Deng, Lanqing; Wang, Shuai; Zhong, Hong; Liu, Guangyi

doi:10.1016/j.apsusc.2015.03.138

Cited by 53 publications

(3 citation statements)

References 45 publications

(35 reference statements)

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“…Many scholars have tried to explain the adsorption mechanism of collectors on mineral surfaces in the general formation of hydrogen bond adsorption, electrostatic adsorption and complex reaction adsorption [22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Structure and Mechanism of Styryl Phosphoric Acid at the Rutile–Water Interface

et al. 2018

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The microstructure and mechanism of styryl phosphoric acid (SPA) adsorbed at the rutile–water interface were investigated through zeta potential measurement, ultraviolet-visible spectrophotometry (UV-Vis), Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The results of the zeta potential measurement illustrate that SPA is mainly electrostatically adsorbed on the rutile surface, and the adsorption process and result can be well fitted by the Stern-Grahame equation. The adsorption is severely affected by pH due to different species of SPA occurring in different pH solutions. The compound of P–O–Ti, with a structure of bidentate binuclear or bidentate mononuclear complexes, is formed after SPA is adsorbed on the rutile surface. SPA can be adsorbed on the rutile surface through the coordination of self-polymerization and bidentate mononuclear, which greatly increases the hydrophobicity of the rutile surface. Based on the above analysis and discussion, we proposed the adsorption model of SPA at the rutile–water interface, which was conducive to the modification and synthesis of a highly efficient flotation collector of the primary rutile ore.

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Section: Introductionmentioning

confidence: 99%

Adsorption Structure and Mechanism of Styryl Phosphoric Acid at the Rutile–Water Interface

et al. 2018

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“…Flotation reagents play an important role in the flotation process (Jiang et al, 2010b). In recent years, various surfactants have been used as collectors for selective separation of diaspore and kaolinite in direct flotation, such as oleic acid (Huang et al, 2012), tall oil, oxidized paraffin soap (Yuehua et al, 2004;Hu et al, 2005), 733, styrene phosphate, hydroxamic acids, propyl gallate (Lyu et al, 2019) and their mixtures (Jiang et al, 2014), and novel synthetic chelates (Deng et al, 2015(Deng et al, , 2016. The selectivity of synthetic chelating collectors is stronger than that of oleic acid collectors (Gibson et al, 2017), and their functional groups are mainly composed of one or several carboxyl groups, hydroxamic acid salts and amides (Jiang et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The selectivity of synthetic chelating collectors is stronger than that of oleic acid collectors (Gibson et al, 2017), and their functional groups are mainly composed of one or several carboxyl groups, hydroxamic acid salts and amides (Jiang et al, 2011). However, oleic acid collectors are still widely used in bauxite flotation as the most commonly used collectors (Deng et al, 2015;Wang et al, 2017) due to their low cost, high collection capacity and low toxicity in China (Jarek et al, 2010;Chernyshova et al, 2011). But the strong collecting ability and low selectivity of oleic acid collectors may lead to low A/S ratio or low recovery of diaspore concentrate.…”

Section: Introductionmentioning

confidence: 99%

Flotation Separation of Diaspore and Kaolinite by Using a Mixed Collector of Sodium Oleate-Tert Dodecyl Mercaptan

Man

Wang

et al. 2019

Front. Chem.

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Sodium oleate (NaOl), a collector in diaspore flotation, has been widely used for more than 30 years, while its low selectivity becomes an issue under today's process requirement. This study introduced tert dodecyl mercaptan (TDM) together with NaOl as a mixed collector to improve selectivity in diaspore flotation. We found that using the mixed collector of NaOl/TDM (total concentration 0.1 mM, the molar ratio 8:2 of NaOl: TDM) at pH = 9-10 significantly effectively separated diaspore and kaolinite. Comparing the recovery of Al 2 O 3 and the ratio of Al 2 O 3 to SiO 2 (A/S) treated by NaOl/TDM (pH = 9) and NaOl (pH = 10), the Al 2 O 3 recovery and A/S in concentrate for NaOl/TDM are 7.5% and 2.2 higher than that for NaOl in mixed mineral flotation. Also, surface tension measurements, Zeta potential measurements and Fourier Transform Infrared (FTIR) spectra analysis were used to examine its selectivity from a flotation mechanical perspective. Surface tension measurements show that mixed collector NaOl/TDM has stronger surface activity and hydrophobic association than NaOl. The results of Zeta potential measurements and FTIR spectra analysis indicate that NaOl and TDM can selectively co-adsorb diaspore through physical adsorption. Moreover, the adsorption of TDM promotes the adsorption of NaOl on diaspore. However, when NaOl/TDM treats on kaolinite together, TDM can hardly adsorb on mineral surface, nor can it promote the adsorption of NaOl.

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Synchronous Desulfurization and Desilication of Low-Grade and High-Sulfur Bauxite by a Flotation Process

et al. 2019

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N-(6-(hydroxyamino)-6-oxohexyl) decanamide collector: Flotation performance and adsorption mechanism to diaspore

Cited by 53 publications

References 45 publications

Adsorption Structure and Mechanism of Styryl Phosphoric Acid at the Rutile–Water Interface

Adsorption Structure and Mechanism of Styryl Phosphoric Acid at the Rutile–Water Interface

Flotation Separation of Diaspore and Kaolinite by Using a Mixed Collector of Sodium Oleate-Tert Dodecyl Mercaptan

Synchronous Desulfurization and Desilication of Low-Grade and High-Sulfur Bauxite by a Flotation Process

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