Flotation of kaolinite from tailings of kaolin-washing plants by cationic collectors

Barani, Kianoush

doi:10.1051/e3sconf/20160801014

E3S Web Conf.

2016

DOI: 10.1051/e3sconf/20160801014

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Flotation of kaolinite from tailings of kaolin-washing plants by cationic collectors

Kianoush Barani

Abstract: Abstract. Traditional processing of kaolin is achieved by dispersion of the mined ore and classification by means of multistage hydrocyclones. The inefficiencies inherent to cyclones produce a middling product that is commonly disposed back to the quarry. In this research recovery of kaolinite from tailings of the Zonoupz kaolin washing plant, which is located in Iran, was investigated by cationic flotation. Flotation experiments showed that flotation of kaolinite from tailings was much better in an acidic tha… Show more

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2023

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Substituent Effects in Kaolinite Flotation Using Dodecylamine: Experiment and DFT Study

et al. 2023

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The molecular structure of cationic surfactants is closely related to their flotation performance. In this paper, three cationic surfactants with different head group structures were selected as collectors of kaolinite, and the substituent effects were studied by the DFT method. The DFT calculation results showed that increasing the number of substituents in the dodecylamine head group can significantly increase its surface and head group charge. Dodecylamine has the lowest LUMO orbital energy, so dodecylamine has the strongest electron attraction ability and the strongest interaction with kaolinite. Electron density differential showed that there was an area of electron aggregation between the collector and the surface of the kaolinite. The interaction energy of DDA on kaolinite surfaces was greater than that of the other two collectors, indicating that the adsorption of DDA on the surface of kaolinite was more stable. Flotation results showed that higher a kaolinite yield was obtained in the presence of dodecyl dihydroxyethyl methyl ammonium chloride. The calculated results of the solvent-accessible surfaces, the head group charge, and the number of bonds between the collector and the kaolinite show good consistency with the actual flotation results of the three collectors, which can be used as a screening index for kaolinite flotation collectors.

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Substituent Effects in Kaolinite Flotation Using Dodecylamine: Experiment and DFT Study

et al. 2023

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Flotation of kaolinite from tailings of kaolin-washing plants by cationic collectors

Cited by 1 publication

References 9 publications

Substituent Effects in Kaolinite Flotation Using Dodecylamine: Experiment and DFT Study

Substituent Effects in Kaolinite Flotation Using Dodecylamine: Experiment and DFT Study

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