how is fatty acid used in chromite flotation

US4311584A - Amine flotation of chromite from acidic pulps

Chromium values are recovered from pulverized chromite ore by agitating and aerating an aqueous pulp of said pulverized chromite ore containing an amine collector at a pulp acidity less than 2.5; and recovering a chromite containing froth as a concentrate.

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process chromite flotation - ispog2019.org

The flotation process is typically conducted by adding 0.5 to 5.0 pounds fatty acid, 0.1. Live Chat Chromite Flotation Froth Flotation (Sulphide & Oxide) Metallurgist ...

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Flotation of fine kaolinite using dodecylamine chloride/fatty

May 01, 2017 · All fatty acids were used as received. Each fatty acid was mixed with 50 mL DAH solution and stirred with a magnetic stirrer at 50 °C until a homogeneous mixture was obtained. The molar ratio of DAH and fatty acid was 1:1 and 2:1, respectively. The full names and the shortcuts of all reagents were listed in Table 1.

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COMPARISON OF MAGNETIC SEPARATION AND RESULTS FOR

Theseare stronger acids thanthe fatty acids andused in 5-20% solutions. Organic sulphonates are used to float oxides and silicates such as iron ores, chromite, garnet, beryl andzircon, as well as some salt type minerals. Because bonding is usually electrostatic, pH of thepulpis critical especially for the lowermolecularweightcollectors

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Flotation of Chromite Ore - 911metallurgist.com

Table of ContentsEQUIPMENTFlotation of Chromite ProcedureResultsEffect of Pulp pH on Flotation of ChromiteEffect of Collectors on Flotation of Chromite OreEffect of pH Modifier Flotation of ChromitePreconditioning Acid ScrubEffect of DeslimingEffect of Ore TypeFlotation of Chromite Gravity ConcentrateConclusions The Stillwater Complex in Montana (mainly the Benbow and Mouat deposits) contains ...

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Dolomite flotation of high magnesium phosphate ores using fatty acid

iii collecting ability and flotation selectivity. When 10% of DSS1 was used with the fatty acid soap as collector, at least 10% more dolomite can be removed with less P 2 O 5 loss. The effectiveness of the surfactant DSS1 in enhancing dolomite flotation was

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Froth flotation - Wikipedia

Initially, naturally occurring chemicals such as fatty acids and oils were used as flotation reagents in a large quantity to increase the hydrophobicity of the valuable minerals. Since then, the process has been adapted and applied to a wide variety of materials to be separated, and additional collector agents, including surfactants and synthetic compounds have been adopted for …

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Flotation of Chromite Ore - Metallurgist & Mineral Processing

Table of ContentsEQUIPMENTFlotation of Chromite ProcedureResultsEffect of Pulp pH on Flotation of ChromiteEffect of Collectors on Flotation of Chromite OreEffect of pH Modifier Flotation of ChromitePreconditioning Acid ScrubEffect of DeslimingEffect of Ore TypeFlotation of Chromite Gravity ConcentrateConclusions The Stillwater Complex in Montana (mainly the …

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Effect of Particle Characteristics on Fatty Acid Flotation of

Such bad feed was inefficiently separated by fatty acid flotation and improved recovery would require controlled grinding in order to improve the extent of liberation. Effect of Particle Characteristics on Fatty Acid Flotation of Florida Phosphate Rock. Other Volumes: FIPR Publication No. 02-173-236. Volume I: Project Summary

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INVESTIGATION OF CHROMITE FLOTATION FROM BOURINOS AREA IN

the flotation tests were carried out in denver flotation machine, with 250g samples weight, ground to -0,125mm. NO PRELIMINARY DES OF THE PULP WAS APPLIED. THE RESEARCH WAS FOCUSED ON ALKALINE AREA PH AND FATTY ACIDS WERE USED AS COLLECTORS.

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PDF BENEFICIATION OF CHRONIITES - EPrints

Fatty acids as well as petroleum sulphonate can be used for chromite flotation. Magnetic separation tests after removing the highly magnetic portion at 35 mesh and 65 mesh respectively yielded 54.25% and 55.08% Cr.0O, grade non-magnetic concentrates with 84.9% and 79.3% Cr0O., distribution. It may be concluded

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PDF Flotation of chromite and serpentine

Flotation of chromite and serpentine ... saturated carboxylic acids ... anionic flotation was successful using fatty acids to alkaline media. The chromite deposits of Greece occur exclusively in ...

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The effect of surface potential on the flotation of chromite

May 01, 1996 · This suggest the selective separation of chromite at pH below 3.2 by using fatty acid based anionic collectors. The flotation experiments confirmed that increasing pH is harmful for the selectivity. The best results in terms of recovery and selectivity were obtained by using F2874 as a collector.

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Fatty acid collectors for phosphate flotation and their ­adsorption

To improve phosphate flotation especially with regard to reduction of consumption of collector the relationship between the flotation performance of phosphate collectors and their adsorption behaviour was evaluating using a variety of techniques including Crystal Microbalance with Dissipation technique (QCM-D), a highly sensitive method for in-situ surface characterization.

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Flotation behavior of chromium and manganese minerals

FLOTATION BEHAVIOR Chromite Taggart and Arbiter (1943) used contact angle as a measure of floatability of various oxides with oleic acid; large contact angles were obtained from pH 3-7 for chromite. Fatty acids have been used extensively in the flotation of chromite ores

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OleoFlot - Flotation Reagents

OleoFlot 090 DSR is a customized tall oil fatty acid and selected distilled fatty acids from renewable crop sources. It is designed for the beneficiation of oxide base metal and phosphate minerals. OleoFlot 090 DSR can be formulated to diesel mixtures used as recovery and selectivity booster.

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High-Performance Fatty Acid Collector for Phosphate Flotation

primary or rougher flotation using fatty acid collectors to float phosphate, and the cleaner flotation to produce the final concentrate using amine collector to float the

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Fatty acid collectors for phosphate flotation and their

The flotation performance of the collectors was evaluated using a laboratory mechanical flotation cell at different process parameters such as pH, Collector dosage, diesel dosage and flotation time and using two collectors: a commercial plant collector (I) and a refined tall oil fatty acid (II).

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Separation Mechanism of Fatty Acids from Waste Cooking Oil

Using the mixed fatty acids (MFA) produced by waste cooking oil as flotation collectors directly, the flotation effect is usually not satisfactory, especially at lower temperature, which may be due to the presence of large amounts of saturated fatty acids. In this study, waste cooking oil was separated into saturated fatty acids (SFA) and unsaturated fatty acids (UFA). The separation mechanism ...

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BASF addressed range of flotation optimisation challenges at

“Stronger ecological legislation in many countries is also imposing restrictions on the use of alkylphenol ethoxylate (APEO) surfactants, which are known as effective modifiers for fatty acid collector systems in apatite flotation. A range of non-toxic and biodegradable APEO substitutes were developed by BASF.

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The effect of surface potential on the flotation of chromite

1996/5/1 · The flotation of chromite from “slime fraction” of the gravity circuit of Kemi concentrator, Finland was studied. The main gangue minerals are chlorite, tremolite and talc. Amines or fatty acid collectors are normally used for this sort of mineral composition.

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PDF) Flotation of chromite and serpentine

The flotation of chromite from “slime fraction” of the gravity circuit of Kemi concentrator, Finland was studied. ... Amines or fatty acid collectors are normally used for this sort of mineral ...

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COLLECTORS FOR FLOTATION OF BRANNERITE AND URANOTHORITE

of the uranium minerals. Tailings obtained from the flotation of sulfides from the deslimed ore were used for comparing various collectors for uranium minerals. Table I1 summarizes the results with different collec- tors. The results obtained showed that the alkyl acid

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Flotation of hematite using 18-carbon fatty acids

The results of a number of comparative flotation characteristics of hematite flotation using the 18-carbon fatty acids are summarised in Table 2.The general trend was that the unsaturated fatty acids were stronger collectors for hematite compared with stearic acid, with an increased amount of double bonds/molecule often giving higher flotation recoveries.

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PROPERTIES OF FATTY ACID/DODECYLAMINE MIXTURES AND THEIR

≥98%) and hexadecanoic acid, C16 (purity ≥98%). All surfactants and fatty acids were used as received. The full names and abbreviations of all reagents were listed in Table.3. Each fatty acid was mixed with 50 cm3 DAH solution and stirred with a magnetic stirrer at 50 °C until a homogeneous mixture was obtained. The pHs of the

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Fatty Acids Used For Iron Ore Flotation Stone Crusher Graha

Fatty Acids Used For Iron Ore Flotation Stone Crusher Graha. Froth Flotation of Iron Ores Jan 02 2012 With the depleting reserves of high grade iron ore in the world froth flotation has become increasingly important to process intermediate and low grade iron ore in an attempt to meet the rapidly growing demand on the international market.

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PDF) Lauryl Phosphate Flotation Chemistry in Barite Flotation

with cetyl stearyl sodium sul fate or de pressed in apatite flotation using fatty acids at pH 12 ... chromite [1 4], wolframite [1 5 ... The fatty acids overall have similar adsorption affinity at ...

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Frothing phenomena in phosphate gangue flotation from magnetite fines with fatty acid

gangue using a fatty acid based collector and MIBC frother. The phosphorous flotation process is conducted in a battery of conventional flotation cells and the magnetite concentrate (flotation tails) is cleaned in a column flotation cell and the floated phosphate

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Fatty amine - Wikipedia

Production and reactions. Fatty amines are commonly prepared from fatty acids; which are themselves obtained from natural sources, typically seed-oils.The overall reaction is sometimes referred to as the Nitrile Process and begins with a reaction between the fatty acid and ammonia at high temperature (>250 °C) and in the presence of a metal oxide catalyst (e.g., alumina or zinc oxide) to give ...

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Journal of Physics: Conference Series PAPER OPEN ACCESS

while the anionic flotation with modified fatty acids as collector leads to very low silica content of 0.88 % in the iron concentrate. Table 1 - Impact of collector type on waste rock minerals reverse flotation performance; monoamine ether and modified fatty acids are used in the cationic and anionic reverse flotations, respectively.

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Flotation of fine kaolinite using dodecylamine chloride/fatty acids

The performance of dodecylamine chloride/fatty acid mixture collector on kaolinite flotation was investigated using flotation test and computational method. Surface tension measurement, contact angle measurement and image analysis were also used to study the flotation behavior of dodecylamine chloride and mixture collectors.

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Fatty acid collectors for phosphate flotation and their adsorption

2010/7/1 · Introduction. In the conventional phosphate flotation (Crago) process, a significant amount of the silica present in the feed is floated twice, first by fatty acid, and then by amine ( Zhang et al., 1997 ). The Crago process is therefore inefficient in terms of collector efficiency.

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BENEFICIATION OF CHRONIITES

Flotation studies conducted at 65 mesh size produced a concentrate assaying 51 .9% Cr0O.,, 18.27% Fe (Cr/Fe=2.5) with 85.2% Cr,O, re-covery. At a finer grind the flotation concentrate analysed 53.31% Cr0O.,, 18.97% FeO, (Cr/Fe=2.5) with a higher Cr,,0, recovery of 91.2%. Fatty acids as well as petroleum sulphonate can be used for chromite ...

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Continuous hydrogenation of fats and fatty acids at short

Continuous hydrogenation of fats and fatty acids using suspended catalysts was studied in a vertical flow reactor packed with Raschig rings. A short time of reactive contact of the fat or the fatty acid with the catalyst and hydrogen is the unique feature of this system. A nickel catalyst used in the hydrogenation of soybean oil gave a reduction of 40-50 iodine value units per min, small ...

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Separation Mechanism of Fatty Acids from Waste Cooking Oil and Its Flotation Performance in Iron Ore Desiliconization

Flotation is the main measure of separating quartz and two typical methods are used, the one is directly ... convert the mixed fatty acid glyceride to the mixed fatty acids sodium. After treated by H2SO4 solution (1000.0 mL, 20%) under the reaction temperature ...

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Froth Flotation of Iron Ores

Fatty acids (a distilled tall oil containing approximately 91% oleic and linoleic acids, 6% rosin acid and 3% unsaponifiables) are used as the collector of iron oxides, the dosage of which is usually in the range of 0.45-0.67 kg/t [4, 5]. Conditioning was reported to be of critical importance for the direct flotation process.

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Acidic Medium Flotation Separation Of Chromite From Olivine

FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES 1 ... Flotation offers an alternative concentration process for the separation of the fine materials ... hydrofluoric acid, sodium fluoride or sodium silicofluoride in the flotation medium. ... fines, chromite the medium particles and olivine the coarse. ... chromite sample and a high grade serpentine using sodium oleate as the collector.

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Development of fatty acid modifier for beneficiation of the

Nov 14, 2017 · Development of fatty acid modifier for beneficiation of the igneous apatite ores of Kovdordeposit 1. Mining Solutions Development of fatty acid modifier for beneficiation of the igneous apatite ores of Kovdor deposit Rostislav Kamkin, Alexej Michailovski, Pavel Alexandrov, Pasi Mikkola MEI Flotation`17 conference Capetown 2017 2.

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Zircon Processing | Equipment, Process Flow, Cases - JXSC

Oxalic acid is also used to adjust the pulp to acid and flotation with amine collectors. Electrostatic separation: The conductive minerals, such as ilmenite, hematite, chromite, cassiterite and rutile, are separated from the non-conductive minerals such as zircon, monazite, garnet and apatite by using the difference of conductivity of minerals.

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chromite ore flotation

chromite ore flotation Part II Chrome Ore Mining Process. Gravity separation is the mainly process for chrome processing,sometimes the chrome concentrate will be separated by low intensity magnetic separation or high-intensity magnetic separation for a second processing, that`s to improve the grade of the chrome .Several ores can use flotation or flocculation flotation …

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