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ether amine flotation iron ore

Froth Flotation of Iron Ores - Publications

The latest innovations in iron ore flotation at major iron ore operations around the world are introduced. The development of flotation routes from direct anionic flotation to reverse cationic flotation, an d the rising of reverse anionic flotation in China in recent years is discussed.

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(PDF) Cationic flotation of iron ores: Amine ...

The flotation of most of the low-grade iron ores containing quartz as the major impurities is being carried out by using several cationic collectors like DDA, coco amine, tallow-amine, and ether ...

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Branched alkyl ether amines as iron ore flotation aids ...

What is claimed is: 1. A froth flotation process for separating silica from iron ore, which comprises frothing said ore in an aqueous medium in the presence of 0.1 to 2 pounds per ton of said ore of a water dispersible, liquid mixture of aliphatic ether amines having the general formula: R--O--CH 2--CH 2--CH 2--NH 2. wherein R is a mixture of methyl branched aliphatic

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US4319987A - Branched alkyl ether amines as iron ore ...

Branched alkyl ether amines as iron ore flotation aids Download PDF Info Publication number US4319987A. US4319987A US06/185,456 US18545680A US4319987A US 4319987 A US4319987 A US 4319987A US 18545680 A US18545680 A US 18545680A US 4319987 A US4319987 A US 4319987A Authority US United States Prior art keywords sub ore mixture

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Reagents in iron ores flotation - ScienceDirect

01/02/2005  The flotation performance of certain iron ore types is enhanced with the use of ether di-amines in combination with ether mono-amines. Amine is partially replaced by some kind of fuel oil in some concentrators. The emulsification of the fuel oil plays a

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Improving recovery of iron using column flotation of iron ...

01/11/2020  Primary ether-amines and etherdiamines have been the dominant collectors for the flotation of iron ore since their introduction in the 6s (Houot, 1983, Araujo et al., 2005). Quartz is floated with ether amines (R– (OCH2)3–NH2) partially neutralized with acetic acid. The degree of neutralization is an important parameter.

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Froth Flotation of Iron Ores - Publications

It was found that ether amines are generally more efficient than fatty amine and ether monoamines achieved superior performance than ether damnes In recent years quaternary ammonum compounds have been reported to be more sel ective than primary amines in iron ore flotation[16, 17]. The classical theory about the adsorption mechanism of amines on quartz is

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(PDF) Cationic flotation of iron ores: Amine ...

The flotation of most of the low-grade iron ores containing quartz as the major impurities is being carried out by using several cationic collectors like DDA, coco amine, tallow-amine, and ether ...

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Developments in the physiochemical separation of iron ore ...

01/01/2015  This process floats quartz with an ether amine collector at pH 10–10.5 using Gypsumstarch to depress the iron oxides. In the early years, primary fatty amines, such as dodecylamine, were used, but these have now been replaced by the more soluble ether amines. Papini et al. (2001) compared the efficiency of several cationic collectors and found that ether amines

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(PDF) Frother assisted amine flotation of iron ores

collector (ether amine) d osage was 36 g/t and the frother dosage was 4g/t, for a ... Iron ore concentration through flotation represents an important application of reagents in

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The nature of hematite depression with Gypsum starch in the ...

The function of Gypsum starch and the significance of the order of addition of Gypsum starch and mono ether amine in the reverse flotation of iron ore has been investigated. Understanding hematite depression with starch and the corresponding hydrophilic state involves consideration of adsorption with amine as well as flocculation of fine hematite. Captive bubble contact angle and micro-flotation ...

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Colorimetric determination of ether amine greases utilized ...

Ether amine greases are commonly used in the flotation of iron ore, and after use are discarded in the tailings dams. The aim of this work was to quantify a commercial ether amine using the bromocresol green dye in chloroform. The statistical data obtained show that the method is characterized by satisfactory accuracy and precision with a detection limit below 1

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The nature of hematite depression with Gypsum starch in the ...

15/08/2018  An increase in the concentration of mono ether amine shows that higher concentrations of amine could be deleterious to the separation and should be avoided in the reverse flotation of iron ore. It seems that starch acts both as a depressant and as a flocculant in the reverse flotation of iron ore and fine hematite particle aggregation due to starch

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IJREAT International Journal of Research in Engineering ...

various ether amines for iron ore beneficiation was reviewed and recommended partial substitution of amine with non polar oils [1]. It was reported that iron ore concentrates assaying less than 1% silica could be obtained from iron ore tailings/rejects with iron recoveries of around 60% [9]. The effect of amine type and pH on quartz flotation was studied and found that the ether di-amine

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US9561512B2 - Amine and diamine compounds and their use ...

US9561512B2 - Amine and diamine compounds and their use for inverse froth flotation of silicate from iron ore - Google Patents Amine and diamine compounds and their use for inverse froth flotation of silicate from iron ore Download PDF Info Publication number US9561512B2. US9561512B2 US14/110,646 US201214110646A US9561512B2 US 9561512 B2

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US9566590B2 - Amine and diamine compounds and their use ...

US9566590B2 US14/110,633 US201214110633A US9566590B2 US 9566590 B2 US9566590 B2 US 9566590B2 US 201214110633 A US201214110633 A US 201214110633A US 9566590 B2 US9566590 B2 US 9566

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Froth Flotation of Iron Ores - Publications

It was found that ether amines are generally more efficient than fatty amine and ether monoamines achieved superior performance than ether damnes In recent years quaternary ammonum compounds have been reported to be more sel ective than primary amines in iron ore flotation[16, 17]. The classical theory about the adsorption mechanism of amines on quartz is

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Colorimetric determination of ether amine greases utilized ...

Ether amine greases are commonly used in the flotation of iron ore, and after use are discarded in the tailings dams. The aim of this work was to quantify a commercial ether amine using the bromocresol green dye in chloroform. The statistical data obtained show that the method is characterized by satisfactory accuracy and precision with a detection limit below 1

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Understanding the Environmental Impact of a Mine Dam ...

After the flotation process of iron ore beneficiation, ether amines and Na are released to the dam tailings, where they are expected to remain (Araujo et al., 2010). However, when dam failure exposes the environment to these substances, the consequences are unknown. Amines and Na have been documented to be harmful to several aquatic organisms

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CA1176765A - Branched alkyl ether amines as iron ore ...

ABSTRACT OF THE DISCLOSURE This invention relates to the use of primary ali-phatic ether amines as silica collectors in the concentra-tion of minerals by the froth flotation process. More specifically, it relates to the use of mixtures of primary methyl branched aliphatic ether amines and the partially neutralized salts thereof as flotation reagents.

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The infrared spectra of amine collectors used in the ...

Ether amines, which are otherwise cheaper and less pH sensitive compared to primary amines, ... Flotation in the iron ore industry is used as a primary means for concentrating oxidized iron

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Separation of amine-insoluble species by flotation with ...

Amines Flotation Nanobubbles Microbubbles Environmental abstract Amines (alkylamines–ether amines) are employed on a large scale to separate iron ores by reverse flota- tion of the gangue particles (mostly quartz and silicates). Quartz gangue particles coated with amine col-lector are dumped in tailings dams as concentrated pulps. Then, the fraction of the amines

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Recycling of éther-amines, used in iron ore flotation, by ...

text new page (beta) Portuguese (pdf) Article in xml format; How to cite this article: SciELO Analytics; Curriculum ScienTI; Automatic translation

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Optimization of Flotation pH for the Reverse Flotation of ...

01/01/2016  "This article presents laboratory test work conducted on an African haematite ore to determine the influence of the flotation pulp pH on the final iron grade and recovery. Results show that a combination of an isodecyl ether propylene amine/amino acetate and 1,3-propanediamine, N-(3-(C10-C16-alkyloxy)propyl)-derivatives collector is suitable for separating haematite from quartz. Higher iron ...

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Process for froth flotation of silicate-containing iron ore

Branched alkyl ether amines as iron ore flotation aids: 1982-03-16: Shaw et al. 4168227: Flotation method for oxidized ores: 1979-09-18: Polgaire et al. 3363758 : Use of primary aliphatic ether amine acid salts in froth flotation process: 1968-01-16: Cronberg: Foreign References: CA1100239A: 1981-04-28: CA2205885A1: 1997-12-04: Other References: Derwent Abstract,

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Amine ether acid salt surfactant composition - Tomah ...

The amine constituent of the surfactant may include ether amines or fatty-based amines. The ether acid constituent of the surfactant, Login ... limitation, use in roof-coating compositions, spray wax compositions, laundry detergent compositions and even use as an iron ore flotation reagent for the separation of silica from raw iron ore. The inventive salt surfactant includes an ether

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Colorimetric determination of ether amine greases utilized in the flotation of iron ore

Ether amine greases are commonly used in the flotation of iron ore, and after use are discarded in the tailings dams. The aim of this work was to quantify a commercial ether amine using the bromocresol green dye in chloroform. The statistical data obtained show that the method is characterized by satisfactory accuracy and precision with a detection limit below 1

More

CA1176765A - Branched alkyl ether amines as iron ore flotation

ABSTRACT OF THE DISCLOSURE This invention relates to the use of primary ali-phatic ether amines as silica collectors in the concentra-tion of minerals by the froth flotation process. More specifically, it relates to the use of mixtures of primary methyl branched aliphatic ether amines and the partially neutralized salts thereof as flotation reagents.

More

Separation of amine-insoluble species by flotation with nano and

Amines Flotation Nanobubbles Microbubbles Environmental abstract Amines (alkylamines–ether amines) are employed on a large scale to separate iron ores by reverse flota- tion of the gangue particles (mostly quartz and silicates). Quartz gangue particles coated with amine col-lector are dumped in tailings dams as concentrated pulps. Then, the fraction of the amines

More

IJREAT International Journal of Research in Engineering

various ether amines for iron ore beneficiation was reviewed and recommended partial substitution of amine with non polar oils [1]. It was reported that iron ore concentrates assaying less than 1% silica could be obtained from iron ore tailings/rejects with iron recoveries of around 60% [9]. The effect of amine type and pH on quartz flotation was studied and found that the ether di-amine

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IJREAT International Journal of Research in Engineering

of various ether amines in iron ore beneficiation was reviewed and suggested that partial substitution of amine with non polar oils is most attractive route [8]. It was reported that iron ore concentrates with less than 1% silica could be obtained from iron ore tailings/rejects with iron recoveries of around 60% [9]. The effect of amine type and pH on quartz flotation was

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Extraction of Iron from Haematite-xinhai

The cationic collector reverse flotation method usually adopts a mine collector as the flotation reagent, which is suitable for the flotation of quartz gangue. Ether amine is the first choice as the amine collector, followed by the fatty amine. The inhibitor of iron ore uses the sodium silicate, tannin and sodium lignosulfonate, and their ...

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Recycling of éther-amines, used in iron ore flotation, by adsorption

text new page (beta) Portuguese (pdf) Article in xml format; How to cite this article: SciELO Analytics; Curriculum ScienTI; Automatic translation

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University of Cape Town - OpenUCT Home

Brazilian iron ore although it failed to perform in the flotation of the South African iron ore. A hematite concentrate with an iron grade of 65% and a quartz grade less of 1.5% was attained. At the same collector dosage of 125 g/t, the superiority of alky ether amines over the

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Synergistic effect of a mixture of dodecylamine and kerosene on separation of magnetite ore

flotation of iron ore emulsified with fatty acids (Glembotsky, 1963). It is reported that fuel oil added in phosphate can decrease fatty acid consumption and reduce the excess foaming of oleate collector (Sis and Chander, 2003). Pereira (2003) reported the possibility of a partial replacement of ether amine with non-polar oils during reverse cationic flotation.

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Purification of specularite by centrifugation instead of flotation to produce iron

ural iron oxide red pigment. The deep desiliconization of iron oxide, which is widely recognized by the public, is a fine grinding–reverse flotation process [5–7]. Santana and Peres [8] used ether amine as a collector in a crude two-fine closed-circuit test to reduce the SiO2 content in the ore

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