sodium sulfate flotation

  • US3917801A - Flotation of boric acid from sodium sulfate ...

    Clean crystalline boric acid is isolated from a slurry, obtained by reaction between a borate ore and sulfuric acid, and seriously contaminated with clay slimes and sodium sulfate, by the steps of adding a crystal modifier to the slurry, stirring said slurry at a temperature from about 55* to about 100*C., cooling said slurry to a temperature near Glauber''s salt transition temperature,

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  • Flotation of boric acid from sodium sulfate obtained ...

    The Separation of Boric Acid from Anhydrous Sodium Sulfate by Flotation: Boric Acid Produced By Reacting A Boron Ore With Sulfuric Acid Kernite ore was employed in the tests. Kernite, which has the formula Na 2 B 4 O 7 .4H 2 O, is very difficult to dissolve in water and, therefore, cannot be refined as easily by solution-crystallization as ...

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  • Role of Sodium Sulfide - Copper Lead & Zinc Ore Flotation

    Jul 17, 2018 · Sodium sulfide is one of the most widely used alkali metal sulfides in the flotation of copper, lead, and zinc minerals in their oxidized form. The sulfidization process, developed in the U.S.A. in 1915-20 for oxide copper minerals flotation, is especially suitable for oxidized lead ores in which the gangue is usually basic.

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  • Flotation of sphalerite and pyrite in the presence of ...

    Jun 01, 2001 · The effect of sodium sulfite on pyrite flotation is more pronounced than on sphalerite flotation with flotation recoveries being reduced by half at a sodium sulfite concentration of 2×10 −4 mol dm −3. However, at higher sodium sulfite concentrations, pyrite recovery increases.

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  • The flotation separation of scheelite from calcite and ...

    Dec 10, 2017 · Dextran sulfate sodium has a depressant effect on the flotation of calcite and fluorite. • Dextran sulfate sodium can chemically adsorb on calcite and fluorite surface. Abstract This paper introduced dextran sulfate sodium, a medical intermediate rich in sulfate group, as a potential depressant for calcite and fluorite in scheelite flotation.

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  • Enhanced sulfidation xanthate flotation of malachite using ...

    May 18, 2017 · Sulfidation xanthate flotation is the most widely used method for dealing with copper oxide ore 9, 12, 13. Sodium sulfide can promote the flotability of oxide copper ore 14, resulting in the...

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  • Comparison of Common Fecal Flotation Techniques for the ...

    pare different flotation techniques and flota-Flotation Solutions for Helminth Ovaa Magnesium Sulfate (MgSO 4; SG 1.20) 450 g MgSO 4 1,000 ml tap water Zinc Sulfate (ZnSO 4; SG 1.18–1.20) 331 g ZnSO 4 1,000 ml warm tap water Sodium Nitrate Solution (NaNO 3; SG 1.18–1.20) 338 g NaNO 3 1,000 ml tap water Saturated Salt (NaCl; SG 1.18–1.20 ...

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  • Removal of sulfate ions by dissolved air flotation (DAF ...

    Apr 10, 2016 · After flotation, the efficiency was measured in terms of residual sulfate concentration in the treated water as a function of time and polymer flocculant concentration. 2.2.3. Study of micro- and nanobubble DAF of sulfate-bearing precipitates2.2.3.1. Synthetic solutions of sodium sulfate

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  • Enhanced sulfidation xanthate flotation of malachite using ...

    May 18, 2017 · The flotation recovery of malachite as a function of sodium butyl xanthate (NaBX) concentration in the absence or presence of different ammonium sulfate concentrations with 5 × 10 −4 mol/L Na 2 ...

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  • Flotation of Silver Bearing Minerals from Sulfide Ores

    Mar 19, 2018 · Several tests were conducted in sodium sulfate solution in conjuntion with the usual sodium tetraborate electrolyte to improve understanding of flotation in conventional processing mills. Xanthate consumption also was measured using ultraviolet spectrophotometry to better understand the interaction between the collector and the mineral surface.

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  • Ion flotation of heavy metal ions by using biodegradable ...

    Ion flotation was used to remove copper(II), lead(II) and chromium(III) from simulated wastewater using a new biodegradable biosurfactants, namely, sodium N-lauroylsarcosinate (LS), and the synthetic surfactant sodium dodecyl sulfate (SDS) as collectors. The use of LS resulted in better removal of metal ions than that achieved with SDS.

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  • Investigation on the flotation separation of fluorite from ...

    Sep 01, 2021 · Flotation results showed that, in the presence of sodium oleate (NaOL) and SPS, the flotation recovery difference between fluorite and celestite reached 76.26% and the grade of fluorite concentrates increased by 32.11% at pH 6.0.

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  • Flotation Reagents - Mineral Processing & Metallurgy

    Jun 08, 2016 · The most widely used sulphidizer is sodium sulphide, which is commonly used in the flotation of lead carbonate ores and also slightly tarnished sulphides such as pyrite and galena. In the sulphidization of ores containing precious metals careful control must be exercised as in some instances sodium sulphide has been known to have a depressing ...

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  • Effect of Sodium Metabisulfite on Selective Flotation of ...

    Sodium metabisulfite (MBS) was used in this study for selective flotation of chalcopyrite and molybdenite. Microflotation tests of single and mixed minerals were performed to assess the floatability of chalcopyrite and molybdenite. The results of microflotation of single minerals showed that MBS treatment significantly depressed the floatability of chalcopyrite and slightly reduced

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  • The Application of Xanthate in Froth Flotation Process ...

    Apr 11, 2019 · Xanthate, as the flotation collector with strong collection effect, is mainly used to enhance the hydrophobicity of the mineral surface to meet the requirements of flotation.Xanthate is commonly used in the flotation process of sulfide minerals. Xanthate is a combination of alcohol, sodium hydroxide and carbon dioxide, which is an anionic collector. . It is light yellow,

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  • Flotation Depressants - Mineral Processing & Metallurgy

    Aug 12, 2015 · Sodium cyanide. Sodium cyanide is mainly used to depress sphalerite in the first or lead-flotation stage in separating lead from zinc minerals. Its action on pyrite is nearly as strong as on sphalerite, but it does not affect galena unless a large excess is added or the contact time is too long. The effect of sodium cyanide is often intensified ...

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  • US5122290A - Froth flotation of calcium borate minerals ...

    Particles of a calcium borate mineral, such as colemanite or ulexite, are recovered from an ore by a froth flotation process using a dialkyl sulphosuccinate as collector. Suitable dialkyl sulphosuccinates include sodium or ammonium dinonyl sulphosuccinate, sodium or ammonium di-isodecyl sulphosuccinate, and sodium or ammonium dilauryl sulphosuccinate.

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  • Effect of copper ions on the flotation separation of ...

    Jan 01, 2018 · Sodium hydroxide (NaOH) and hydrochloric acid (HCl) solutions (0.1 mol/L) were used to adjust the slurry pH. Distilled water was used in all experiments. 2.3. Flotation tests. Single mineral flotation tests were conducted in a 30 mL XFG II5 flotation cell with a fixed impeller speed of 1260 rpm.

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  • Combined Column and Mechanical Flotation Cell Process for ...

    Dec 03, 2021 · It is classified as a sedimentary phosphate with calcite as main impurity (calcareous type).The effects of different operating parameters were evaluated for both conventional and column flotation. A mixt. of oleic acid and kerosene is used as a collector, sulfuric acid as pH regulator and sodium sulfate as phosphate depressant.

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  • Sodium Sulfide - Structure, Properties, uses and Side effects

    Sodium sulfide is a salt which plays an essential role in the organic chemistry industry. The formula for sodium sulfide is Na 2 S, or more commonly its hydrate Na 2 S·9H 2 O. Both the anhydrous and the hydrous salts are colourless solids. Sodium sulfide is a water-soluble compound, with a strongly alkaline solution.

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  • Testing Oleic-SDS Mixture in the Absence/Presence Na2SO4 ...

    Aug 07, 2014 · The reverse flotation of calcareous phosphate ores, at acidic pH, usually uses anionic collectors such as oleic acid (Ol) and sodium dodecyl sulfate (SDS). However, using a mixture of two anionic collectors is very rare. In the present paper, a mixture of oleic acid and sodium dodecyl sulfate, with a ratio 1:1, was prepared. Different dosages of Ol–SDS mixture

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  • Role of Sodium Sulfide - Copper Lead & Zinc Ore Flotation

    Jul 17, 2018 · Sodium sulfide is one of the most widely used alkali metal sulfides in the flotation of copper, lead, and zinc minerals in their oxidized form. The sulfidization process, developed in the U.S.A. in 1915-20 for oxide copper

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  • Flotation of celestite with the anionic collector sodium ...

    The flotation of celestite occurs with the anionic collector sodium dodecyl sulfate, but depression was found above pH 10, due to specific adsorption of HCO 3

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  • Ion flotation of heavy metal ions by using biodegradable ...

    Ion flotation was used to remove copper(II), lead(II) and chromium(III) from simulated wastewater using a new biodegradable biosurfactants, namely, sodium N-lauroylsarcosinate (LS), and the synthetic surfactant sodium dodecyl sulfate (SDS) as collectors. The use of LS resulted in better removal of metal ions than that achieved with SDS.

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  • Comparison of Sodium Oleate and Sodium Petroleum Sulfonate ...

    Sep 30, 2021 · Based on previous investigations, SPS is considered as a low-cost collector with great low-temperature flotation capacity. SPS is a sodium sulfonate of a mixture of alkanes with different chain length, with a structural formula of RSO 3 Na (R is alkyl, cycloalkyl, or alkyl aryl). One of a general production method is using sulfonating agent (smoke sulfuric acid, sulfur

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  • (PDF) Sorptive flotation for metal ions recovery | Kostas ...

    The solution pH was adjusted by the addition of nitric acid or sodium hydroxide solutions, as required. The eluate solution was a mixture of sodium sulfate (1 mol dm 3) and sodium citrate (0.1 mol dm 3). The dispersed-air flotation column had a retention time of 600 s and superficial air velocity of 0.27 cm s 1 (unless stated otherwise).

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  • Beneficiation of Akashat Phosphate Rocks by Flotation Process

    sodium sulfate, 30% solid concentration, 6.5 pH and 3 minutes for flotation time) containing 32% P 2 O 5 , 0.5% MgO and CaO/P 2 O 5 ratio less than of 1.6% with a recovery of 93%.

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  • Fecal flotation for detecting parasite burdens in faeces.

    A solution of sodium nitrate, Sheather's sugar solution, zinc sulfate solution, sodium chloride solution or potassium iodide solution is added to the faeces within the Fecalyser (see section 7 for info on the best fecal flotation solutions to use).

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  • Flotation Depressants - Mineral Processing & Metallurgy

    Aug 12, 2015 · Sodium cyanide. Sodium cyanide is mainly used to depress sphalerite in the first or lead-flotation stage in separating lead from zinc minerals. Its action on pyrite is nearly as strong as on sphalerite, but it does not affect galena unless a large excess is added or the contact time is too long. The effect of sodium cyanide is often intensified ...

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  • Interaction in Sodium Sulfate – Carbon Mixtures as a ...

    Sep 18, 2015 · Sodium Sulfate.Sulfates, which have accompanying documents at different levels, for example, TU 21-249-00204168–92 ‘Sodium, sulfate technical grade’, GOST 21458–75 ‘Sodium sulfate, crystallization’, TU 2141-084-002095-27–99 ‘Sodium sulfate, natural (purified), STO 00204168-002–2008 ‘Sodium sulfate’, and others, are widely used in the glass industry.

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  • Testing Oleic-SDS Mixture in the Absence/Presence Na2SO4 ...

    The phosphate concentrate obtained under the optimum conditions (1kg/t of oleic acid ,10kg/t of sodium sulfate, 30% solid concentration, 6.5 pH and

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  • (PDF) Pyrite and pyrrhotite open circuit potentials study ...

    water, (b) in sodium chloride solution, (c) in sodium sulfate solution. H. Moslemi et al. / Minerals Engineering 24 (2011) 1038–1045 1041 intense reduction in open circuit potential under the ...

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  • IOM3 | Mineral Processing and Extractive Metallurgy, Vol ...

    Dec 13, 2021 · Lithium recovery from mechanically activated mixtures of lepidolite and sodium sulfate. Nader Setoudeh, Ataollah Nosrati & Nicholas J. Welham. Pages: 354-361. DOI: 10.1080/25726641.2019.1649112. Comparative investigation of leaching of zinc from wastes of the zinc alloy production process. Hassan Koohestani, Elahe Sadat Khatami & Kazem Babaei ...

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  • Does Sodium Sulfide Conduct Electricity?--Shaanxi Fuhua ...

    Because sodium sulfide is strong electrolyte, it has these USES. In addition to its electroplating and reduction capabilities, it is widely used in other fields: Flotation of sulfide ore; Sodium sulfide is a commonly used agent in the flotation of sulfide ores, and its functions mainly include the following three aspects: Inhibitors

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  • Recovering by-products from sea water brines and the like ...

    The improved production of sodium sulfate, potassium sulfate and other valuable salts from salt plant bitterns or the like wherein initial reduction in sulfate ion concentration yields salt cake and greatly facilitates the selective recovery of potassium and other valuable by-product salts. ... The flotation overflow is converted to potassium ...

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