Flotation of Calcium Minerals with Combination of Reagents of Different Molecular Structure

Шепета, Е. Д.; Игнаткина, В. А.; Кондратьев, С. А.; Саматова, Л. А.

doi:10.1134/s1062739119066368

Cited by 3 publications

(4 citation statements)

References 13 publications

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“…This assumption is also confirmed by kinetic experiments. The use of collectors with different structures of hydrocarbon radicals provides a uniform adsorption layer on the mineral surface due to their adsorption in areas with different surface energy …”

Section: Resultsmentioning

confidence: 99%

“…An increase in the number of such groups changes the surfactant properties of the alcohol and weakens its sorption capacity. 18 It was shown in ref 19 and 20 that fatty oxyethylated alcohols with similar ethoxylation degrees of 4 and 5 show a good synergistic effect. In ref 21, during flotation of apatite from South Africa, it was also confirmed that the use of alkyl phenols with a low ethoxylation degree, equal to 2, enhances the oleate flotation ability.…”

Section: ■ Introductionmentioning

confidence: 96%

“…For example, in the case of N -acylated aminoalcohols, the optimal number of oxyethylene groups should be equal to or less than 6. An increase in the number of such groups changes the surfactant properties of the alcohol and weakens its sorption capacity . It was shown in ref and that fatty oxyethylated alcohols with similar ethoxylation degrees of 4 and 5 show a good synergistic effect.…”

Section: Introductionmentioning

confidence: 96%

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Interaction Features of Sodium Oleate and Oxyethylated Phosphoric Acid Esters with the Apatite Surface

et al. 2022

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Apatite ores are the most important phosphate materials used for the agricultural and livestock chemical production. With the global demand for phosphorous compounds, apatite and other phosphorus-bearing ores are being depleted. The main method of apatite ore enrichment at the moment is the flotation process, the efficiency of which depends on complex heterogeneous processes occurring at the boundary of three phases (“liquid–gas”, “solid–liquid”, and “solid–gas”). Significant influence on the process have the flotation modes and composition of the reagent mixture, which provide a synergistic effect. The purpose of this work was to investigate the reasons for the synergism of surfactants used in apatite ore flotation with fatty acid-based collectors. The object of the study is a monomineral fraction of apatite, separated from the apatite-nepheline ore of Khibiny deposits. In the course of the work, it was found that the mixture of sodium oleate and phospholane PE65 has a synergistic effect on the mineral surface of apatite during foam flotation. The ratio of reagents was determined at which the maximum synergistic effect was observed.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 96%

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Interaction Features of Sodium Oleate and Oxyethylated Phosphoric Acid Esters with the Apatite Surface

et al. 2022

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“…When adding isomeric fatty alcohols (Exol-B) for rough flotation of scheelite, the recovery of scheelite in the rough concentrate was improved by 0.95%-3.67% [97].…”

Section: Nonpolar Collectorsmentioning

confidence: 99%

Research Progress with Scheelite Flotation Reagents: A Review

Lu,

Ding,

et al. 2023

Minerals

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With the depletion of easily mined and separated wolframite, scheelite has become the primary source of tungsten. Flotation is the primary technique used to enrich scheelite. However, flotation separation of scheelite from calcium-bearing gangue minerals, such as calcite and fluorite, has always been challenging due to their similar surface properties. To date, various flotation reagents and related mechanisms have been proposed for scheelite, which have attracted considerable attention. This paper reviews the scheelite flotation reagents, including collectors and regulators, and introduces recent research progress on the mechanisms for the interactions between the flotation reagents and mineral surfaces. The advantages and limitations of different flotation reagents are discussed. Inorganic or organic inhibitors in combination with fatty acids, chelate collectors, and cationic collectors are commonly used to separate scheelite from calcium-bearing gangue. Flotation differences between the scheelite and calcium-bearing minerals can be explained by variations in the electrical charges and steric hindrance at the mineral surfaces. In the future, fatty acid collectors will be still the main collectors used in scheelite flotation due to their low cost and strong collecting ability, and new collectors with high selectivity (such as metal complex collectors, new chelate collectors, new environmental collectors) will become a new research hotspot in the future due to their good selectivity.

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Potential for Improvement of Fluorite Concentrate Quality in Reprocessing of Manmade Materials

2022

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Flotation of Calcium Minerals with Combination of Reagents of Different Molecular Structure

Cited by 3 publications

References 13 publications

Interaction Features of Sodium Oleate and Oxyethylated Phosphoric Acid Esters with the Apatite Surface

Interaction Features of Sodium Oleate and Oxyethylated Phosphoric Acid Esters with the Apatite Surface

Research Progress with Scheelite Flotation Reagents: A Review

Potential for Improvement of Fluorite Concentrate Quality in Reprocessing of Manmade Materials

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