concentration by ion flotation

Concentration by Ion Flotation Nature

IT has been found possible to concentrate inorganic ions from aqueous solutions, even if very dilute, by a flotation technique. The principle depends upon the use, as a collector, of a surfactant...

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Ion Flotation - a metal recovery technique - European ...

18/06/2019  Ion flotation can be performed by using a surfactant in combination with a different molecule – called a chelating agent, which can form a complex with the metal ion by chemically binding to it, so-called coordinating. The formed complex is then captured in the surfactant foam. That often brings in more parameters in the equation for an optimization of an ion flotation procedure. A convenient solution is to have the surfactant

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A review of the applications of ion floatation: wastewater ...

28/06/2019  They found that a fraction of more than 0.95 could be removed by continuous ion flotation under the optimum operational conditions. 48 The residual concentration of Direct Red could be lowered to below 0.5 ppm after 3 minutes of treatment by ion flotation when Choi et al. used sodium lauryl sulfate as both collector and frother. 49 Rhodamine B (RB) and thoron (TH) are widely used for analytical and

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Recovery of Copper from Ammoniacal Leachates by Ion

27/04/2021  The parameters for ion flotation were optimized using synthetic solutions, by varying the concentration of the collector (1–6 mmol L −1), the flotation time (1–24 h), and multiple flotation stages (1–4 stages). For the optimization of the ion flotation stages, the required amount of sodium dodecyl sulfate (SDS) was added as a solid in the solution after the first flotation stage. The solutions were

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Kinetics and Recovery of Xanthate-Copper Compounds by Ion ...

Ion flotation is a technology that uses special properties found in the interfaces in order to concentrate ions or other species with electric charge contained in aqueous solutions [1]. Since 1960, when Felix Sebba introduced the ion flotation concept, extensive research has been carried out on the separa-tion of several of the metal ions found in solution [2, 3]. Ion flotation involves the ...

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Sulphate Removal from Flotation Process Water Using Ion ...

High concentrations of these ions may reduce efficiency of the flotation process, causing scale problems. Removal of these ions from process water often requires complex water treatment plants with high capital and operating costs. In this study, partial cleaning of water was investigated as an alternative approach for decreasing high sulphate concentrations of 3000–3800 mg/L down to 1000–1500 mg/L, an acceptable concentration for most sulfide ore flotation plants, by using an ion ...

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An overview on the surfactants used in ion flotation ...

15/07/2019  Ion flotation is an efficient method to remove or recovery of heavy metals, rare and precious metal ions, and organic pollutants from aqueous solution. The added surfactants served as collectors and frother mainly dominate the indexes of ion flotation. Therefore, the review summarized the surfactants (chemical synthetic surfactants, biosurfactants, and nanoparticle surfactants) used in ion flotation. The advantage, disadvantage, and outlook of the three types of surfactants

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Ion flotation—its potential for hydrometallurgical ...

29/09/2003  Ion flotation separates metal–dodecylsulfate complexes into a separate foam phase, yielding a detoxified effluent. As discussed below, ion flotation is most suitable for dilute concentrations of colligend (generally, the collector should be below the CMC). Hence, only a modest pH change would be expected from exchanging the metal ions with a ...

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CONCENTRATION OF THE FLUOROZIRCONATE ION BY

OSTI.GOV Journal Article: CONCENTRATION OF THE FLUOROZIRCONATE ION BY ION FLOTATION. CONCENTRATION OF THE FLUOROZIRCONATE ION BY ION FLOTATION. Full Record; Other Related Research; Authors: Rice, N W; Sebba, F Publication Date: Mon Mar 01 00:00:00 EST 1965 Research Org.: Univ. of Witwatersrand, Johannesburg Sponsoring Org.: USDOE OSTI

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Minerals Free Full-Text Enhancing Ion Flotation ...

Conventional ion flotation is hydrodynamically constrained by coupling of the gas flux and liquid flux that report to the concentrate. This constraint has greatly limited the industrial application of ion flotation, despite its remarkable effectiveness in extracting ionic species down to very low concentrations, of order 1 ppm. Previous work demonstrated that these hydrodynamic constraints ...

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An overview on the surfactants used in ion flotation ...

15/07/2019  Ion flotation is originated from minerals beneficiation (usually named as froth flotation or foam flotation), ... Moreover, the presence of frother at a concentration of 0.4% (v/v) increased removal to 94% . Sodium dodecyl benzene sulfonate (SDBS) and d-mannitol were served as the collector to remove boron from aqueous solution by ion flotation, and the boron removal efficiency reached

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Iodine Separation by Ionic Flotation

the ion flotation as separation method, in the presence of cationic surfactants as surfactants collectors, and normal alkyl alcohols, polyethylene glycols or crown ethers as coligande. Experimental part Materials Experiments were performed on synthetic solutions containing iodine, with concentrations ranging from 20-120 ppm, obtained by dissolving in deionized water an appropriate volume of ...

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Kinetics and Recovery of Xanthate-Copper Compounds by Ion ...

Ion flotation is a technology that uses special properties found in the interfaces in order to concentrate ions or other species with electric charge contained in aqueous solutions [1]. Since 1960, when Felix Sebba introduced the ion flotation concept, extensive research has been carried out on the separa-tion of several of the metal ions found in solution [2, 3]. Ion flotation involves the ...

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SEPARATION OF ZINC AND CADMIUM IONS FROM SULFATE

ion flotation and transport through liquid membrane are methods used for separation of metal ions from aqueous solutions. Ion flotation process has special position for the removal of ions from very dilute solutions, i.e. at the concentration below 1.010-4M. Ion flotation involves the removal of surface inactive ions from aqueous solutions by

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Sulphate Removal from Flotation Process Water Using Ion ...

High concentrations of these ions may reduce e ciency of the flotation process, causing scale problems. Removal of these ions from process water often requires complex water treatment plants with high capital and operating costs. In this study, partial cleaning of water was investigated as an alternative approach for decreasing high sulphate concentrations of 3000–3800 mg/L down to 1000 ...

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Kinetics and Recovery of Xanthate-Copper Compounds by

24/06/2019  The recovery of copper in aqueous media by ion flotation in a laboratory flotation cell was carried out. Hydrodynamics and gas dispersion parameters were obtained. The results show that the increase of potassium amyl xanthate concentration above the stoichiometric amount considerably affects the efficiency of the separation of copper.

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SPECIFIC ION EFFECT OF CHLORIDE SALTS ON COLLECTORLESS ...

decreases at low salt concentration, flotation increased at higher salt . Specific ion effect of chloride salts on collectorless flotation of coal . 513 . concentrations. For example their studies showed that above 0.1 M NaCl any increase in salt concentration increased the coal floatability. Their studies also showed that the coal flotation decreased with an increase in the salt concentration ...

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CONCENTRATION OF THE FLUOROZIRCONATE ION BY

OSTI.GOV Journal Article: CONCENTRATION OF THE FLUOROZIRCONATE ION BY ION FLOTATION. CONCENTRATION OF THE FLUOROZIRCONATE ION BY ION FLOTATION. Full Record; Other Related Research; Authors: Rice, N W; Sebba, F Publication Date: Mon Mar 01 00:00:00 EST 1965 Research Org.: Univ. of Witwatersrand, Johannesburg Sponsoring Org.: USDOE OSTI

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Kinetics and Recovery of Xanthate-Copper Compounds by Ion ...

Ion flotation is a technology that uses special properties found in the interfaces in order to concentrate ions or other species with electric charge contained in aqueous solutions [1]. Since 1960, when Felix Sebba introduced the ion flotation concept, extensive research has been carried out on the separa-tion of several of the metal ions found in solution [2, 3]. Ion flotation involves the ...

More

Iodine Separation by Ionic Flotation

the ion flotation as separation method, in the presence of cationic surfactants as surfactants collectors, and normal alkyl alcohols, polyethylene glycols or crown ethers as coligande. Experimental part Materials Experiments were performed on synthetic solutions containing iodine, with concentrations ranging from 20-120 ppm, obtained by dissolving in deionized water an appropriate volume of ...

More

REMOVAL OF HEAVY METALS FROM WASTEWATERS BY ION FLOTATION

In this study, ion flotation experiments were performed to investigate the removal of heavy metals (copper, zinc, silver and chromium) from wastewaters. Various parameters such as pH, surfactant and frother concentrations and airflow rate values were tested to determine the optimum flotation conditions. Sodium dodecyl

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Effect of calcium concentration on calcite flotation from ...

Based on these results, limited ion concentrations - 20 mg/L Ca 2+ and 30 mg/L Mg 2+ - were proposed to ensure the quality of recirculating water without impairing the flotation process. For the same oxidise phosphate ore, Santos et al. (2010) presented the effects of the Ca 2+ ions concentration on apatite recovery. Their results showed that ...

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Sulphate Removal from Flotation Process Water Using Ion ...

High concentrations of these ions may reduce e ciency of the flotation process, causing scale problems. Removal of these ions from process water often requires complex water treatment plants with high capital and operating costs. In this study, partial cleaning of water was investigated as an alternative approach for decreasing high sulphate concentrations of 3000–3800 mg/L down to 1000 ...

More

Kinetics and Recovery of Xanthate-Copper Compounds by

24/06/2019  The recovery of copper in aqueous media by ion flotation in a laboratory flotation cell was carried out. Hydrodynamics and gas dispersion parameters were obtained. The results show that the increase of potassium amyl xanthate concentration above the stoichiometric amount considerably affects the efficiency of the separation of copper.

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Separation of Metal Ions from Aqueous Solutions Using ...

ion concentration as a function of flotation process parameters. c) To compare removal efficiencies by precipitate flotation with and without addition of chemicals. d) To study the removal of Cu and Zn ions from binary solutions and elucidate the effect of each ion on the removal of the other. 2. THEORETICAL CONSIDERATIONS 2.1 Precipitation of Metal Hydroxides: Metal ions can be precipitated ...

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SPECIFIC ION EFFECT OF CHLORIDE SALTS ON COLLECTORLESS ...

decreases at low salt concentration, flotation increased at higher salt . Specific ion effect of chloride salts on collectorless flotation of coal . 513 . concentrations. For example their studies showed that above 0.1 M NaCl any increase in salt concentration increased the coal floatability. Their studies also showed that the coal flotation decreased with an increase in the salt concentration ...

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Removal of Lead Ions from Aqueous Solution by Sorptive ...

The residual Pb2+ ion concentration in the mother liquor was analyzed using a Perkin-Elmer 2380 atomic absorption spectrophotometer at a wavelength of 217.0 nm. The percentage floatability of Pb 2+ ions (%F) was calculated from the relationship: %F = (Ci – Cr) / Ci × 100 (1) where Ci and Cr denote the initial and residual Pb2+ ion concentrations. To study the flotation of LS alone, the ...

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CONCENTRATION OF THE FLUOROZIRCONATE ION BY

OSTI.GOV Journal Article: CONCENTRATION OF THE FLUOROZIRCONATE ION BY ION FLOTATION. CONCENTRATION OF THE FLUOROZIRCONATE ION BY ION FLOTATION. Full Record; Other Related Research; Authors: Rice, N W; Sebba, F Publication Date: Mon Mar 01 00:00:00 EST 1965 Research Org.: Univ. of Witwatersrand, Johannesburg Sponsoring Org.: USDOE OSTI

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Ion Flotation Studies and Separation Procedures for the ...

concentration was increased to 0.5 M. The percentage of Pd(II) floated decreased to zero as the initial HCl concen­ tration was increased to 2.0 M. A general flotation selectivity sequence of Au(III) > Pd(II), Ir(IV), Pt(IV) > Ir (III) > Rh(III) was observed. Ion flotation enrichment ratios were calculated and com­

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Effect of calcium concentration on calcite flotation from ...

Based on these results, limited ion concentrations - 20 mg/L Ca 2+ and 30 mg/L Mg 2+ - were proposed to ensure the quality of recirculating water without impairing the flotation process. For the same oxidise phosphate ore, Santos et al. (2010) presented the effects of the Ca 2+ ions concentration on apatite recovery. Their results showed that ...

More

REMOVAL OF HEAVY METALS FROM WASTEWATERS BY ION FLOTATION

In this study, ion flotation experiments were performed to investigate the removal of heavy metals (copper, zinc, silver and chromium) from wastewaters. Various parameters such as pH, surfactant and frother concentrations and airflow rate values were tested to determine the optimum flotation conditions. Sodium dodecyl

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Ion Flotation Studies and Separation Procedures for the ...

Ion flotation enrichment ratios were calculated and compared to anion exchange distribution coefficients in order to verify the selectivity trends. Optimum ion flotation conditions were established for the recovery of Au(III), Ir(IV) Pt(IV) and Pd(II) from dilute solutions. A modified solvent sublation method was developed for quantitatively recovering the floated metals in n-butyl acetate ...

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Separation of Metal Ions from Aqueous Solutions Using ...

ion concentration as a function of flotation process parameters. c) To compare removal efficiencies by precipitate flotation with and without addition of chemicals. d) To study the removal of Cu and Zn ions from binary solutions and elucidate the effect of each ion on the removal of the other. 2. THEORETICAL CONSIDERATIONS 2.1 Precipitation of Metal Hydroxides: Metal ions can be precipitated ...

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COPRECIPITATION - FLOTATION REMOVAL OF HEAVY METAL IONS

The concentration of each heavy metal ion in the supernatant liquid is measured by ICP optical emission spectrometry. Coprecipitation experiments are carried out using sodium* oleate and potassium ethyl xantogenate as extra coprecipitants. Flotation experiments with heavy metal ions coprecipitated with ferric chloride as coprecipitant and potassium oleate as coprecipitant and surfactant are ...

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SPECIFIC ION EFFECT OF CHLORIDE SALTS ON COLLECTORLESS ...

decreases at low salt concentration, flotation increased at higher salt . Specific ion effect of chloride salts on collectorless flotation of coal . 513 . concentrations. For example their studies showed that above 0.1 M NaCl any increase in salt concentration increased the coal floatability. Their studies also showed that the coal flotation decreased with an increase in the salt concentration ...

More

Removal of Lead Ions from Aqueous Solution by Sorptive ...

The residual Pb2+ ion concentration in the mother liquor was analyzed using a Perkin-Elmer 2380 atomic absorption spectrophotometer at a wavelength of 217.0 nm. The percentage floatability of Pb 2+ ions (%F) was calculated from the relationship: %F = (Ci – Cr) / Ci × 100 (1) where Ci and Cr denote the initial and residual Pb2+ ion concentrations. To study the flotation of LS alone, the ...

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concentration by flotation of tin from cassiterite ...

concentration by flotation of tin from cassiterite. range, but up to 3.5kg of contained tin (as cassiterite) per 3m at 0.21% Sn and 1m at 0.77% tin from the Trident Pegmatite. that a combination of sulphide flotation and tin mrl.ies.ncsu.edu. 4.9/5(4.3K) Cassiterite Flotation Tin Oxide. The nominal size range for cassiterite flotation is between 2 and 100 microns. The top size is variable ...

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