(PDF) Impact of flotation hydrodynamics on the optimization of fine ...

The flotation beneficiation of phosphate ore is increasingly facing challenges, especially for finely disseminated sedimentary ores rich in carbonates. ... the final apatite concentrate achieved a recovery of 86.3% at a grade of 35.5%, while the MgO content was 1.2% and 84.3% of dolomite was removed from a feed ore containing about 25% P 2 O 5 ...

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New Flotigam 5806 collector developed for froth flotation of Brazilian ...

Mining Solutions. The Bottom Line. Drawing from 70 years of process optimization experience, Clariant's Flotigam 5806 gives a major phosphate mine a collector alternative that…. Delivers mineral concentrate with a P 2 O 5 grade of 35.8%. Improves P 2 O 5 mass recovery. Is custom-made and designed to meet changing feed conditions.

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Refractory gold ores and concentrates part 1: mineralogical and physico ...

Flotation of the ground ores produced concentrates with noticeable differences. Whilst both mainly contained sulphides and silicates, apatite was present in one flotation concentrate and dolomite in the other. Bio-oxidation of the apatite-bearing concentrate produced jarosite-bearing bio-oxidised product.

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Apatite flotation reagent - Tomah Products, Inc. - FreePatentsOnline.com

The apatite flotation reagent includes soya lecithin. The soya lecithin can be used as an apatite collector by itself or can be blended with a phosphate ester, preferably an ethylene oxide modified alcohol based phosphate ester. In an additional embodiment, the apatite flotation reagent can be solely comprised of a phosphate ester, preferably ...

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New Flotigam 5806 collector developed for froth flotation of Brazilian ...

Froth flotation is the main concentration process applied to phosphate ores from alkaline-carbonatitic complex, primarily because of their low grades and complex mineralogy. As a semi-soluble salt, apatite is very susceptible to slight variation in its surface properties, which affect its flotation behavior.

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Effect of calcium concentration on calcite flotation from apatite using ...

The flotation process involves bulk flotation of apatite and calcite with anionic collector (fatty acid soap) at pH=10 followed by calcite flotation at pH=5.5 using H 3 PO 4 as an apatite depressant. Calcite is collected in the froth phase and apatite concentrate is the sink product ( Aquino and Furtado, 1985 AQUINO, J. A.; FURTADO, J. R.V ...

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Optimization of Apatite Flotation Using Taguchi Method

The flotation performance (recovery and grade) of apatite particles in a Esfordi Phosphate Complex was investigated as a function of collectors' ratio and dosage, pH, depressant dosage,...

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Selective flotation separation of apatite from dolomite utilizing a ...

Phosphate ores upgraded by froth flotation are widely used as vital raw materials for the sustainable production of phosphate fertilizer to maintain the food supply. In the flotation process, the efficient recovery of apatite from dolomite-bearing phosphate ore for phosphate fertilizer production depends significantly on the use of high-selectivity depressants.

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Utilization of DTAB as a collector for the reverse flotation separation ...

Reverse flotation desilication is an indispensable step for obtaining high-grade fluorapatite. In this work, dodecyltrimethylammonium bromide (DTAB) is recommended as an efficient collector for the reverse flotation separation of quartz from fluorapatite. Its collectivity for quartz and selectivity for fluorapatite were also compared with figures corresponding to the conventional collector ...

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Review on Beneficiation Techniques and Reagents Used for Phosphate Ores

flotation process, silica was floated using cationic surfactants in a weak acidic or neutral pH, and the phosphate minerals (dominantly apatite) were obtained from the underflow product. The superior adsorption of cationic surfactants on silica rather than apatite probably can be attributed to the more negatively charged surfaces of silica [5].

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Minerals | Free Full-Text | Titanite Ores of the Khibiny Apatite ...

Temperature increase up to 50 °С activates apatite dissolution with the corresponding phosphorus transfer into the liquid phase ( Table 3 ); however, nepheline remains undissolved. Two-stage ore cleaning with cold and then heated sulfuric acid gives satisfactory results for both apatite (P) and nepheline (Al), without Ti losses.

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A Comparative Study of Di Ultrafine Apatite Flotation

Flotation is considered the most e ective technology to concentrate phosphate bearing minerals from sedimentary and igneous phosphates ores [1–3]. One of the main disadvantages of phosphate upgrading by flotation is the high sensitivity of collectors to slimes (size fraction <44 m).

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Mining - SciELO

The flotation process involves bulk flota - tion of apatite and calcite with anionic collector (fatty acid soap) at pH=10 fol-lowed by calcite flotation at pH=5.5 using H. 3. PO. 4. as an apatite depressant. Calcite is collected in the froth phase and apatite concentrate is the sink product (Aquino and Furtado, 1985). The most widely developed ...

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Selective flotation separation of scheelite from apatite by application ...

Moreover, approximately 93.18% of scheelite and 70.86% of apatite were collected in the concentrate product. These results proved that the separation of scheelite from apatite was very difficult by only using NaOL. ... ATMP could selectively depress the flotation of apatite rather than scheelite. A satisfactory separation performance with ...

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Kirovsk Branch of Apatit - PhosAgro

Currently, Kirovsk Branch of Apatit is the world's leading producer of high-grade (P 2 O 5 content of at least 37.5%) phosphate rock and Russia's only producer of nepheline concentrate. It develops six Khibiny deposits: Kukisvumchorr, Yukspor, Apatitovy Cirque, Rasvumchorr Plateau, Koashva and Njorkpahk.

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Apatite Concentrate, A Potential New Source of Rare Earth Elements

In the present study apatite concentrate originating from iron ore beneficiation done by LKAB in Kiruna, Sweden, is explored as a possible source for REEs. The composition and distribution of the REEs within the concentrates are studied using ICP-MS, XRD and SEM-EDS/EPMA, as well as the melting point and heat of fusion using DTA-TGA-MS. ...

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Adsorption of sulfosuccinate collector on apatite and carbonates in a ...

Successful flotation concentration of apatite with carbonate gangue of the phosphate ore from the Catalão mine is therefore linked to the use of sulfosuccinate as collector, which is highly selective for apatite. The selectivity is enhanced by using CO 2 as a gas to generate bubbles.

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Process flow diagram of Chadormalu Iron ore concentrator plant.

Apatites are an important mineral for the phosphate industry, and the flotation of this class of mineral is well-established using fatty acid collector systems (Lu et al., 1998). ... A review of...

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A Comparative Study of Di Ultrafine Apatite Flotation

Keywords: apatite; flotation; column flotation; slimes 1. Introduction Flotation is considered the most e ective technology to concentrate phosphate bearing minerals from sedimentary and igneous phosphates ores [1–3]. One of the main disadvantages of phosphate

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Determination of Rare Earth Elements in Products of Chadormalu ... - IJCCE

reverse flotation tail (hematite concentrate), magnetite concentrate and total tail respectively. About 19.3 % of total REEs were distributed in apatite concentrate with an assay of 9631 ppm. Therefore, further studies have been conducted on this product. According to the Xray studies the minerals of fluorapatite, ankerite and calcite are the ...

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Selective flotation separation of scheelite from apatite by application ...

Apatite Flotation Depressant Adsorption mechanism 1. Introduction As a strategic rare metal, tungsten is mainly extracted from wolframite and scheelite [1], [2]. Wolframite is often concentrated and purified by gravity beneficiation due to its high grade and large specific gravity [3], [4].

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Selection of an appropriate leaching method for light REEs ... - SciELO

Apatite is the chief mineral of the concentrate and the ratio of apatite to monazite is greater than 60. From EMPA analysis, monazite contains a much higher proportion of REEs than apatite, but more than 50% of the REE content of the concentrate is in apatite, as this is the main mineral constituent of the concentrate.

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Depressing effect of sodium hexametaphosphate on apatite in flotation ...

Apatite is one of the gangue minerals associated with natural rutile ores, and it has a good deal of influence on raising the grade of rutile concentrate. So it is of remarkable realistic importance to study the mechanism of the separation of rutile from apatite.

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Adsorption of sulfosuccinate collector on apatite and carbonates in a ...

The final apatite concentrate is the floated fraction of the last cleaner stage of the flotation circuit. The siliceous carbonate ore (SIC) from the Catalão mine underwent fundamental studies by Wang et al. ( 2013 ), aiming at providing better understanding of the CO 2 flotation process proposed by Rezende et al. ( 2011 ).

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Process Mineralogy Characteristics and Flotation Application of a ...

The particle size of these wrapped minerals was less than 0.04 mm. This part of fluorapatite was not easy to liberate completely and separate, leading to the high content of Al and Si in collophanite flotation concentrate. Colloidal apatite was closely associated with quartz, etc., resembling a kind of stromatolite structure . This was rare ...

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Froth Flotation of Iron Ores

To further upgrade the concentrate, froth flotation has been established as an efficient method to remove impurities from iron ore in half a century's practice around the world. ... Dephosphorization of magnetite fines — Part 2: effect of reagents and other chemical variables on apatite flotation kinetics. Transactions of the Institution of ...

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Titanium Ore Processing and Beneficiation - Mineral Processing & Metallurgy

Flotation concentrates are thickened and filtered; gravity concentrates are dewatered by a classifier, pan filter or internal drum filter. Concentrates are thoroughly dried, removing all surface coatings, and is done by conditioning the concentrates with chemicals to cut and wash off the surface film of soap and oils or blowing them off in a dryer.

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Apatite production in Malmfälten | LKAB Minerals - ReeMAP

Apatite production process Erik Niva, Senior Research Engineer, explains, "We upgrade the material in several stages to produce an apatite concentrate. Flotation is the central process whereby we add a coagulation reagent that attracts to the surface of the apatite granules, to which it adheres.

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Review of the reagents used in the direct flotation of phosphate ores ...

To make the apatite mineral float selectively from calcareous-siliceous impurities, the proper flotation reagents should be applied depending on the type of the ore to be processed, their texture, and the nature of the gangue minerals as well as the pulp chemistry.

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Calculate Flotation Cell Capacities Volume vs Retention Time

Estimate the volume of conditioners and flotation cells required to handle 9100 dry tons of ore per 24 hours at 30% pulp solids by weight, with an ore specific gravity of 3.1. Five minutes conditioning time and 15 minutes flotation time are desired.

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Trace Element Content and Partition in Apatite Group Minerals in ...

Variations in composition and zoning were found in apatite grains in the concentrate and waste from flotation. This information is relevant when it comes to establishing why apparently similar apatite behave in a different way during froth flotation, the most common process applied in the concentration of the igneous apatite ore.

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Hard Rock Lithium Processing

objective, the flotation concentrate can then be further processed by high-temperature techniques (pyrometallurgy) or chemical techniques (hydrometallurgy) to produce lithium carbonate or other desirable lithium compounds. FLOTATION Flotation is used to generate a high grade spodumene concentrate (75-85% spodumene) suitable for lithium extraction.

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Froth Flotation of Iron Ores

In the flotation process, the apatite minerals are floated with a fatty acid based collector. Sodium silicate is also used in this process as a dispersant of fine particles. The phosphorus content can be easily reduced to an acceptable level of less than 0.025 wt% P by increasing collector dosage.

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Selection of an appropriate leaching method for light REEs ... - SciELO

The type and distribution of REE minerals in the phosphate concentrate of the Esfordi flotation plant play an important role in the selection of REE processing methods. Apatite is the main REE-bearing mineral in the concentrate, and the ratio of apatite to monazite is greater than 60.

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