Effect of Magnesium Species on Cationic Flotation of Quartz from Hematite

Lelis, Deisiane Ferreira; Lima, Rosa Malena Fernandes; Rocha, Geriane Macedo; Leão, Versiane Albis

doi:10.1080/08827508.2020.1864362

Cited by 10 publications

(2 citation statements)

References 25 publications

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“…3 ). Lelis et al (2019, and 2022) showed that the quartz surface energy was getting significantly lower than the hematite by increasing cationic collector concentrations 32 , 33 . These data illustrated the LBG-treated quartz was more hydrophobic.…”

Section: Resultsmentioning

confidence: 99%

Green hematite depression for reverse selective flotation separation from quartz by locust bean gum

Kordloo

Khodadadmahmoudi

Ebrahimi

et al. 2023

Sci Rep

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Reverse cationic flotation is currently the main processing technique for upgrading fine hematite from silicates. Flotation is known as an efficient method of mineral enrichment that deals with possibly hazardous chemicals. Thus, using eco-friendly flotation reagents for such a process is an emerging need for sustainable development and green transition. As an innovative approach, this investigation explored the potential of locust bean gum (LBG) as a biodegradable depressant for the selective separation of fine hematite from quartz through reverse cationic flotation. Various flotation conditions (micro and batch flotation) were conducted, and the mechanisms of LBG adsorption have been examined by different analyses (contact angle measurement, surface adsorption, zeta potential measurements, and FT-IR analysis). The micro flotation outcome indicated that the LBG could selectively depress hematite particles with negligible effect on quartz floatability. Flotation of mixed minerals (hematite and quartz mixture in various ratios) indicated that LGB could enhance separation efficiency (hematite recovery > 88%). Outcomes of the surface wettability indicated that even in the presence of the collector (dodecylamine), LBG decreased the hematite work of adhesion and had a slight effect on quartz. The LBG adsorbed selectively by hydrogen bonding on the surface of hematite based on various surface analyses.

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Section: Resultsmentioning

confidence: 99%

Green hematite depression for reverse selective flotation separation from quartz by locust bean gum

Kordloo

Khodadadmahmoudi

Ebrahimi

et al. 2023

Sci Rep

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“…The adsorption methods in flotation can be roughly divided into chemical adsorption, adsorption formed by chemical bonds, and physical adsorption formed by physical forces, such as van der Waals force and electrostatic force. According to the literature (Martinez-Carrillo and Uribe-Salas, 2008; Cao et al, 2021;Wei et al, 2018;Lelis et al, 2022), the adsorption of DDA on the quartz surface is mainly physical. After the dissociation of DDA, the polar groups RNH3 + and RNH3 + -RNH2 associates are adsorbed on the surface of SiO2 by electrostatic force, changing the wettability of the surface of SiO2, and making the surface of SiO2 strong hydrophilicity become hydrophobic surface, and then float up with the bubbles.…”

Section: Fig 4 Adsorption Capacity At Different Collector Concentrationsmentioning

confidence: 99%

Study on the mechanism of the difference in flotation performance between fine-grained crystalline SiO2 and amorphous SiO2

Ma,

Li,

Wang

et al. 2023

Physicochem. Probl. Miner. Process.

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Numerous minerals found in nature contain silica, including quartz, cristobalite, opal, etc. They have the same chemical composition but different crystal structures, and this phenomenon is called “polymorphism” in mineralogy. For these polymorphic and multi-like minerals, in the flotation process, will it directly or indirectly affect the flotation effect. Based on this, this study mainly explores the difference between crystalline SiO2 and amorphous SiO2 in flotation. In this study, two crystal forms of SiO2 were subjected to flotation and adsorption capacity tests. FTIR, other test techniques, the chemical calculation of the flotation solution, and the theoretical calculation of the DLVO can all be used to provide an explanation. Finally, in the flotation experiment, the feedbacks of the two minerals to the change of the pH value of the pulp and the change of the concentration of the reagent are different. Through the comprehensive analysis of the adsorption capacity test and semi-quantitative calculation of the infrared spectrum, the adsorption capacity of crystalline SiO2 to drugs is about 23% higher than amorphous SiO2. Furthermore, during the flotation process, the amorphous SiO2 particles will agglomerate together and entrain into the foam through, resulting in concentrate pollution. So amorphous SiO2 will undoubtedly increase the difficulty of flotation.

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Improving Flotation Separation of Mg(OH)2-Depressed Chalcopyrite and Pyrite by EDTA Modification: A Promising Method for Sustainable Cu Production

Xue,

Oyama,

Fuchida

et al. 2023

J. Sustain. Metall.

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Effect of Magnesium Species on Cationic Flotation of Quartz from Hematite

Cited by 10 publications

References 25 publications

Green hematite depression for reverse selective flotation separation from quartz by locust bean gum

Green hematite depression for reverse selective flotation separation from quartz by locust bean gum

Study on the mechanism of the difference in flotation performance between fine-grained crystalline SiO<sub>2</sub> and amorphous SiO<sub>2</sub>

Improving Flotation Separation of Mg(OH)2-Depressed Chalcopyrite and Pyrite by EDTA Modification: A Promising Method for Sustainable Cu Production

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