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Improving flotation separation of apatite from dolomite

Sep 01, 2020 For each experiment, 2 g of either single mineral samples or mixed mineral samples (1 g apatite and 1 g dolomite) was added into a 30 mL of flotation cell containing the desired amounts of deionized water. The prepared suspension was stirred for 1 min, and its pH was regulated into the desired values using dilute HCl and NaOH solution.

Flotation of Dolomite from Apatite MDPI

Jun 29, 2018 apatite flotation. However, large dosages of H 2SO 2.0 g of pure mineral was placed in the flotation cell with 35 mL deionized water and then conditioned for 1 min. NaPP and NaOL were successively added and stirred for 3 min, respectively. The flotation process lasted 3 min for each test. Following this, the flotation recoveries were calculated

US20120087850A1 Process for Obtaining Apatite

flotation apatite cells carbon dioxide reactant Prior art date 2009-06-09 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Abandoned Application number US13/377,279 Inventor Sebastião Eduardo De Rezende

Intensification of fine apatite flotation with microbubble

Nov 01, 2020 Fig. 1 shows the experimental setup of the apatite flotation and the close-ups of the column parts. The flotation column, which is made of plexiglass, is 1.68 m in height and 0.08 m in diameter. Since the objective of this work is to intensify the flotation of fine apatite particles, the scale-up task is not concerned and therefore this small column is investigated for convenience.

US3405802A Flotation of apatite Google Patents

flotation apatite ore pulp sulphonate Prior art date 1964-07-20 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Lifetime Application number US470574A Inventor Preller Gustav Schoeman

US20120087850A1 Process for Obtaining Apatite

flotation apatite cells carbon dioxide reactant Prior art date 2009-06-09 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Abandoned Application number US13/377,279 Inventor Sebastião Eduardo De Rezende

An Alternative Flotation Process for Apatite Concentration

Apatite flotation –Coarse fraction Scavenger Grade (%) P2O5 CaO Fe 2O3 SiO 2 Al2O3 26,6 37,0 3,4 19,4 4,3 Feed R P 2O5 Grade (%) P2O5 CaO Fe 2O3 SiO 2 Al2O3 65,5 32,9 42,8 2,3 11,3 6,3 Concentrate CornStarch= 300 g/t Sulphossucinate = 500 g/t pH = 11,0 Massrecovery= 28,6% P2O5recovery= 42% -85% flotation P2O5grade = 32% SiO 2grade = 7,1%

Effects of Metal Ions on the Flotation of Apatite

The effects of Ca2+, Mg2+, Al3+, and Fe3+ on the flotation behaviors of apatite, dolomite and quartz were investigated through a micro-flotation test, and the influence of calcium ions on the flotation of these minerals was further elucidated by solution chemistry study, zeta potential measurement, and X-ray photoelectron spectroscopy (XPS) analyses.

(PDF) Apatite Flotation from Brazilite–Apatite–Magnetite

JOURNAL OF MINING SCIENCE Vol. 49 No. 5 2013 APATITE FLOTATION FROM BRAZILITE–APATITE–MAGNETITE ORE 817 The Fourier-transform IR spectrum of MFTIR of pulverous apatite specimen contains intensive doublet specific for carbonate apatite with peak frequencies at 575 and 602 cm–1 (Fig. 5), relevant to deformation vibrations ν4 of Р–О

Formation and properties of dispersive flotation systems

1. The velocity and selectivity of mineral flotation from ores depends markedly on the formation of the optimum volume of flocculated-structure foam in the cell. 2. When flocculated foams are formed in basic flotation without further purification operations, it is possible to obtain apatite concentrates with 39.4% P2O5 at 85–88% extraction; coarsely crushed ores largely promote the formation

Apatite production in Malmfälten LKAB Minerals ReeMAP

Flotation is the central process whereby we add a coagulation reagent that attracts to the surface of the apatite granules, to which it adheres. First, the reagent causes the apatite granules to stick to the air bubbles that we introduce into the flotation cell.

Influence of agitation intensity on flotation rate of

Coarse particles require enough energy in the agitation to be lifted in the flotation cell (Lima, 2009 LIMA, O.A., MARQUES, C.V.P., LEAL FILHO, L.S. Suspensions of apatite particles in a self aerated Denver laboratory flotation cell. Minerals & Metallurgical Processing, v. 26, n. 2, May 2009.

Role of Pseudomonas songnenensis-Apatite Interaction on

presence of Pseudomonas songnenensis as a surface modifier to enhance apatite floatability and thus concentration in its ore. 2. Materials and Methods 2.1. Materials. Pure apatite and calcite mineral samples were supplied by the Egyptian Mineral Resources Authority (EMRA) for flotation experiments and surface behavior investigation.

Computing single-particle flotation kinetics using

Flotation study of fine grained carbonaceous sedimentary apatite ore challenges in process mineralogy and impact of hydrodynamics Miner. Eng.,121 ( 2018 ),pp. 196 204,10.1016/j.mineng.2018.03.021

Apatite flotation reagent Tomah Products, Inc.

Jun 01, 1993 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

The Impact of Microorganisms of Circulating Water on

Jan 25, 2013 Bacteria Impact on Flotation of Apatite from Ore Having experiments, based on pure differences of minerals gave rise to passing on to flotation tests, 4

The USe of ColUmn floTaTion for The reCovery of

G.m. Callow patented the first pneumatic flotation cell, which used air sparging through a porous bottom and horizontal slurry flow, in 1914. The first countercurrent column flotation device was designed and tested by Town and flynn in 1919. Cross-current pneumatic flotation machines were widely used in industry in 1920’s and

Calcite-Apatite Flotation Columbia

pH. Interestingly, flotation at the minimum is found to increase from about 25% to 85% with increase in KNO3 from 0 to 3 x 10-2 kmo1/m3. Flotation again increases to about 100% around pH 13. The effect of apatite supernatant on oleate flotation of

(PDF) Apatite Flotation from Brazilite–Apatite–Magnetite

JOURNAL OF MINING SCIENCE Vol. 49 No. 5 2013 APATITE FLOTATION FROM BRAZILITE–APATITE–MAGNETITE ORE 817 The Fourier-transform IR spectrum of MFTIR of pulverous apatite specimen contains intensive doublet specific for carbonate apatite with peak frequencies at 575 and 602 cm–1 (Fig. 5), relevant to deformation vibrations ν4 of Р–О

Suspension of apatite particles in a self-aerated Denver

Effective solids suspension is a necessary precondition for particle collection, and solids suspension is largely dependent on the hydrodynamics of the flotation cell This study attempted to correlate the status of the suspension of apatite particles of different sizes in a Denver laboratory flotation cell versus the impeller rotational speed (N) adopted to operate the machine. The latter

Separating Dolomite & Apatite by Flotation

Aug 28, 2018 These, data indicate that selective flotation of apatite and dolomite could be obtained at alkaline pH and at pH below 5.5 using collector concentration of 1.87 x 10 -4 kmol/m³. The maximum separation of dolomite was achieved after reconditioning below pH 4.5.

Direct flotation of low-grade Moroccan phosphate ores: a

Nov 23, 2020 Ethylene glycol added to ATRAC 50S, as a nonionic synergist, improved apatite flotation with a recovery of 78.10% and a calcite recovery of 23.78%, while the floatability of quartz has decreased to only 1.47%. A further study will be conducted in flotation cell to validate the findings therein.

Computing single-particle flotation kinetics using

Flotation study of fine grained carbonaceous sedimentary apatite ore challenges in process mineralogy and impact of hydrodynamics Miner. Eng.,121 ( 2018 ),pp. 196 204,10.1016/j.mineng.2018.03.021

Investigations on soluble starch as the depressant of

anionic flotation processing, the apatite is floated with fatty acids collectors after depressing the iron oxide by suitable reagents such as starch, dextrin, sodium silicate, and CMC. In addition, a series of studies have been undertaken to improve apatite separation efficiency, and also to develop novel

Hematite Processing by Flotation

Apr 19, 2016 Hematite Flotation Circuit. Each flotation circuit consists of a four cell open flow roughing section followed by a two cell scavenger. The scavenger concentrate is returned by gravity to the third rougher cell and the rougher concentrate from the first rougher cell is sufficiently high grade ( + 58% Fe) to combine with the cleaner concentrate

The Impact of Microorganisms of Circulating Water on

Jan 25, 2013 Bacteria Impact on Flotation of Apatite from Ore Having experiments, based on pure differences of minerals gave rise to passing on to flotation tests, 4

The USe of ColUmn floTaTion for The reCovery of

G.m. Callow patented the first pneumatic flotation cell, which used air sparging through a porous bottom and horizontal slurry flow, in 1914. The first countercurrent column flotation device was designed and tested by Town and flynn in 1919. Cross-current pneumatic flotation machines were widely used in industry in 1920’s and

Secondary collectors in direct flotation of apatite

SFX and Citation Linker. Frequently asked questions concerning SFX; Electronic books. The e-book database EBC; Audiovisual media; Research data; Alliance and national licences

Apatite flotation reagent Tomah Products, Inc.

Jun 01, 1993 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

BQR Flotation Cells TAKRAF GmbH

The flotation cells were manufactured in the USA to accelerate delivery. The reverse flotation circuit process forms part of a two stage magnetic separator circuit. The non-magnetics, silicates and apatite, are removed as floated product, and pumped to a 20 m diameter DELKOR tailings thickener.

Selective flotation of dolomite from apatite using sodium

the flotation cell is regulated by a flowmeter, F. The outgoing gas from the flowmeter is connected to the Hallimond cell. The magnetic stirrer, preadjusted to a apatite flotation was not affected, while the recovery of dolomite was found to increase by 25-4 3 percent at

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