• Mon - Sun: 24/7 online service for you
Get A QUOTE

dolomite depressants in the flotation of apatite and

Improving Flotation Separation of Apatite from Dolomite Using ... - Publons

Sep 1, 2020The results from flotation experiments illustrated that PAMS effectively depressed the dolomite flotation whereas it exhibited weak influences on the floatability of apatite. It was also found that the reagent scheme of 14 mg/L PAMS and 100 mg/L NaOl could effectively remove dolomite from apatite at pH 9.00.

WhatsApp:+8617329420102

Starch modification of the flocculation and flotation of apatite

Amylose was the least effective depressant among all starches, especially for the cationic flotation system. The depressant action was a function of pH and of the relative amounts of polymer and surfactant. Alkaline pH favoured depression, whereas as the collector level was increased, the depressant action was diminished and eventually eliminated.

WhatsApp:+8617329420102

Floatability of Phosphate Minerals in the Presence of Soluable Glass ...

Flotation of such phosphate-containing minerals as minerals from apatite group is practically the only process for producing concentrates for high quality fertilizer production. A considerable amount of study has been devoted to the physi- co-chemical aspects of these minerals flotation to understand the reasons of their surface

WhatsApp:+8617329420102

Hydrothermal Zebra Dolomite in the Great Basin ... - GeoScienceWorld

In many mining districts in the Great Basin region of the western United States, hydrothermal zebra dolomite (HZD) is present in ore deposits of different types and ages (Fig. 1, Table 1).HZD is composed of alternating layers, ranging from a millimeter to a decimeter in thickness, of dark, fine-grained replacement dolomite and white, coarse-grained, sparry, void-filling dolomite.

WhatsApp:+8617329420102

Adalberto Leles de Souza et al. Mining - Semantic Scholar

Keywords: flotation depressants; anionic flotation; silicate-carbonate phosphate ore Resumo ... well as in the separation apatite/carbon - ates (calcite/dolomite), the use of depres - sants is uppermost. These modifiers are responsible for inhibiting the absorption

WhatsApp:+8617329420102

Minerals Engineering International Online - Froth Flotation: Refereed ...

E.R.L. Espiritu, S. Naseri, K.E. Waters, Surface chemistry and flotation behavior of dolomite, monazite and bastnäsite in the presence of benzohydroxamate, sodium oleate and phosphoric acid ester collectors, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 546, 2018

WhatsApp:+8617329420102

Comparative analysis of dolomite/francolite flotation techniques (1996)

Comparative analysis of dolomite/francolite flotation techniques (1996) by H El-Shall, P Zhang, R Snow Venue: ... Enhanced phosphate flotation using novel depressants (Show Context) ... The results obtained from mineralogical studies showed the presence of apatite, CaO, Al2O3, Fe2O3 and SiO2, in which carbonate was detected as the main gangu

WhatsApp:+8617329420102

International Journal of Minerals, Metallurgy and Materials

Abstract: Since the physical and chemical properties of apatite and dolomite can be similar, the separation of these two minerals is difficult. Therefore, when performing this separation using the flotation method, it is necessary to search for selective depressants. An experimental research was performed on the separation behavior of apatite and dolomite using calcium lignosulfonate as a ...

WhatsApp:+8617329420102

[PDF] Use of depressants in the direct flotation of a silicate ...

Different process alternatives have been proposed for selective separation between apatite and contaminants (carbonates and silicates) present in phosphate ores. Magnetic separation, calcination and gravity separation processes are methods that present low efficiency and high cost.

WhatsApp:+8617329420102

The selective adsorption of xanthan gum on dolomite and its ... - NASA/ADS

In this work, xanthan gum (XG) was exploited as a novel dolomite depressant in the flotation separation of apatite from dolomite in sodium oleate system. The flotation performances and adsorption mechanism of XG towards apatite and dolomite were studied through flotation tests, adsorption capacity measurements, micro-heat tests, atoms density calculations and surface characterizations.

WhatsApp:+8617329420102

the flotation cell is used in dolomite in australia

Dolomite depressants in the flotation of apatite and . May 01, 1997Table 3 shows the results of flotation of 2:1 mixtures of apatite and dolomite using diphosphonic acid The flotation of apatite and collophane from dolomite 541 DPA as a collector. Citric acid and CMC lower the content of MgO in the floated and increased it in the sink fraction.

WhatsApp:+8617329420102

Upgrading of Phosphate Ores - A Review | PDF | Phosphate | Minerals

They concluded that: a) Flotation of apatite is prevented by the depressing action of soluble phosphate ions in acid solutions, whereas dolomite floats readily in presence of such ions. b) If gypsum is present in the flotation feed, excessive quantities of phosphate ions are needed for the depression of apatite because of a fast metathesis ...

WhatsApp:+8617329420102

[PDF] Use of depressants in the direct flotation of a silicate ...

A high demand for mineral resources observed in recent decades has led to an expansion in production in the mining industry. Different process alternatives have been proposed for selective separation between apatite and contaminants (carbonates and silicates) present in phosphate ores. Magnetic separation, calcination and gravity separation processes are methods that present low efficiency and ...

WhatsApp:+8617329420102

Minerals & Metallurgical Processing - smenet

Surface tension of flotation solution and its influence on the selectivity of the separation between apatite and gangue minerals ... Mechanisms involved in reactive flotation of dolomite El-Midany, A. El-Shall, H. Stana, R. View Abstract 101 Evaluation of phosphate depressants in the phosphate/silica system Zhang, P. Snow, R. ...

WhatsApp:+8617329420102

Minerals Engineering International Online - Commodities: Dolomite ...

Adhesion of two bacteria onto dolomite and apatite: their effect on dolomite depression in anionic flotation. Int. J. Mineral Processing, Vol.62, -4, 2000 M.Prasad, A.K. Majumder and T.C. Rao. Reverse flotation of sedimentary calcareous/dolomite rock phosphate ore- an overview. Minerals & Metallurgical Processing, Vol. 17 No. 1, 2000

WhatsApp:+8617329420102

Dolomite-apatite separation by amphoteric collector in ... - DeepDyve

Bioflotation represents one of the growing trends to enhance the selectivity of conventional flotation processes. It utilizes the micro-organisms to replace or to interact with the chemical reagents to increase the gap between surface properties of similar minerals and to enhance the separation selectivity. In this work, dolomite-phosphate separation was investigated using amphoteric collector ...

WhatsApp:+8617329420102

Method of beneficiating phosphate ores - University of Florida

Recovery of apatite in the float fraction was 79.80% indicating a very good separation of dolomite from apatite. EXAMPLE 10. The procedure of claim 4 was repeated. The float fraction analyzed 33.59% P 2 O 5 and 1.03% MgO. Recovery of apatite in the float fraction was found to be 81.02% indicating a very good separation of dolomite from apatite.

WhatsApp:+8617329420102

Minerals Engineering International Online - Froth Flotation: Refereed ...

J. Yu, Y. Ge, X. Guo, W. Guo, The depression effect and mechanism of NSFC on dolomite in the flotation of phosphate ore, Separation and Purification Technology, Vol. 161, 2016 A.S. Reis, M.A.S. Barrozo, A study on bubble formation and its relation with the performance of apatite flotation, Separation and Purification Technology, Vol. 161, 2016

WhatsApp:+8617329420102

Use of fatty acids with an ethoxylated alcohol for apatite flotation ...

The flotation tests were conducted using sodium silicate (3 kg/t) versus starch (1 kg/t) for comparing the effect of the depressants on apatite flotation. Soda ash (300 g/t) and sodium tripolyphosphate (150 g/t) were preliminary added to the pulp to precipitate Ca 2+ and Mg 2+ ions and minimise their negative impact on the fatty acids flotation ...

WhatsApp:+8617329420102

Adsorption of oleate on apatite studied by diffuse reflectance infrared ...

Understanding the depression mechanism of sodium citrate on apatite flotation. Colloids and Surfaces A: Physicochemical and Engineering Aspects 2020, 588, 124312. ... Surface chemistry and flotation behavior of dolomite, monazite and bastnäsite in the presence of benzohydroxamate, sodium oleate and phosphoric acid ester collectors. ...

WhatsApp:+8617329420102

A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite)

Flotation Type Dolomite Recovery (%) Associated Mineral Recovery (%) Mineral Type References 100 + 74 Reverse ~15 Apatite: ~85 Pure mixture [27] ... Apatite: 4.5 Dolomite: 6.8 - - - [11] ZP measurements have revealed that cationic and anionic collectors have pronounced effects on

WhatsApp:+8617329420102

Some characterization, calcination and beneficiation data on a ...

The P2O5 rac'e increased from 17.6 % in the ore to 34.8 % in the product with a 76 % phosphate recovery. Removal of the dolomite from the Kaiyang ore by flotation yielded concentrates assaying 35.6 % P -Cb and 1.1 % MgO (from deslimed flotation feed of 23.9 % P2O5 and 7.5 % MgO) with 60 % -70 % phosphate recovery.

WhatsApp:+8617329420102

[PDF] Effects of Metal Ions on the Flotation of Apatite, Dolomite and ...

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. The results indicate that an appropriate ...

WhatsApp:+8617329420102

Solution chemistry of carbonate minerals and its effects on the ...

The effects of carbonate minerals (dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests, supplemented by dissolution measurements, solution chemistry calculations, zeta-potential measurements, Fourier transform infrared (FTIR) spectroscopic studies, and X-ray photoelectron spectroscopy (XPS) analyses. The results of ...

WhatsApp:+8617329420102

L. Xiao and P. Somasundaran possibly porous. Scanning electron ...

mixtures, dolomite/francolite (I: I), the individual minerals were separated after flotation by gravity in bromofonn. In all the cases, an aliquot was taken just prior to flotation for pH measurements. mol.. CF fLIZMIN RED S. WhatsApp:+8617329420102

Sponsor AkzoNobel showcases optimized flotation collectors

"Traditional fatty acid collectors not only float the calcium mineral apatite but also the other calcium minerals, calcite and dolomite," explained Ribeiro. "Our collectors float selectively ...

WhatsApp:+8617329420102

INTRODUCTION - Columbia University

sieve. The oversize fraction obtained from the latter step had a high dolomite content and, therefore, was mixed with the 110xl05 microns fraction of the as-received ore. The composite material, used as the flotation feed, assayed 11.0 wt% PzOs, 2.2 wt% MgO and 54 wt% acid insolubles. A 420xlOS microns fraction, also used as flotation feed, was

WhatsApp:+8617329420102

Depressants for Calcite and Silica Flotation Studies of Limestone

The reagents used were sodium oleate as collector and sodium silicate as depressants and sodium hydroxide as pH regulators of flotation ... Floatation experiments are based on the optimum condi- ... (1984). Depressant | function in flotation of calcite, apatite and dolomite-reagents in mineral industry. IMM, Sept. | Pervis,A.B., Corec, E.G and ...

WhatsApp:+8617329420102

‪Chen Qian‬ - ‪Google Scholar‬

Depression of the selective separation of rutile from almandine by sodium Hexametaphosphate ... Effect of geological origin of apatite on reverse flotation separation of phosphate ores using phosphoric acid as depressant ... Impact of geological origin on flotation separation of apatite from dolomite using β-naphthyl sulfonate formaldehyde ...

WhatsApp:+8617329420102

Review of the Main Factors Affecting the Flotation of Phosphate Ores - MDPI

For calcareous ores, separation by flotation of carbonates (calcite and dolomite) and phosphates is challenging since the two mineral groups share similar surface chemical properties. There are also colloidal phosphate ores, sedimentary ores containing, in general, a very small grain sized apatite (cryptocrystal).

WhatsApp:+8617329420102

The carbonatite-hosted apatite deposit of Jacupiranga, SE Brazil ...

The major styles of apatite mineralization are veins or veinlets, small pods or patches, disseminated apatite, and massive aggregates (locally). The concentration of apatite involves grinding of the carbonatite, removal of magnetite with a magnet drum, size classification with cyclones, and flotation to suppress carbonates and collect apatite.

WhatsApp:+8617329420102

Different Ores flotation tech

Florrea MAX Apatite. 7013 collector for lower grade ores at 2-3% . 7013A collector for higher grade at 14-18%. Depressant: D119. 7018A collector for dolomite flotation. 7018B collector for dolomite flotation . 7018D collector for dolomite flotation. Alusite. Florrea MAX Alusite.

WhatsApp:+8617329420102

Minerals | Free Full-Text | Insight into the Influence of Surface ...

Surface roughness has an important influence on the wettability of particles. This paper is an innovative exploration to control the surface wettability of apatite and dolomite from the perspective of roughness in the background of phosphate flotation. Roughness characteristics of apatite and dolomite particles and its effects on wettability were investigated with surface roughness, contact ...

WhatsApp:+8617329420102

Employing sulfur-phosphorus mixed acid as a depressant: a novel ...

ABSTRACT. Inorganic acids (sulfuric acid (H 2 SO 4) or phosphoric acid (H 3 PO 4)) are generally employed as depressants in the reverse flotation of collophanite to separate apatite from dolomite.In this study, the flotation performance of a collophanite ore was studied, employing H 2 SO 4, H 3 PO 4, and a sulfur-phosphorus mixed acid as the depressants.The flotation tests revealed that the ...

WhatsApp:+8617329420102

Phosphate C - Axis House

These include; our specialised collectors for both direct and reverse flotation, depressants, frothers, heavy ... Common gangue minerals which forms part of the typical mineralogy of phosphate ores requires the selective flotation of phosphate minerals (apatite, monazite, etc). ... quartz, feldspar, mica, calcite, dolomite, etc. The Axis House ...

WhatsApp:+8617329420102

Minerals | Free Full-Text | Recovery of Rare Earth Elements Minerals in ...

This work specifically presented a preliminary flotation investigation carried out on the ore using sodium oleate as a collector. The relative effects of pulp pH, desliming, and depressants were investigated to ascertain any chance of recovering and upgrading REE minerals in saprolite ore using three different processing configurations.

WhatsApp:+8617329420102

Mechanisms involved in reactive flotation of dolomite -

In this paper, a new process for dolomite/apatite separation is presented. The differential solubility of dolomite in slightly acidic solution is utilized to generate micro CO_2 bubbles at the dolomite/water interface. Particle (dolomite)/bubble aggregates float to the surface leaving phosphate concentrate with low MgO content.

WhatsApp:+8617329420102

Flotation of phosphate ores containing dolomite - Google

A reverse flotation process for removing alkaline earth metal carbonate impurities particularly dolomite and calcite as the cell overflow from a flotation feed reagentized with water, a carbonate collector, a phosphate depressant and a pH regulator to about 20-30% solids and a pH of about 5.5-6.0. The phosphate concentrate is collected as the cell underflow.

WhatsApp:+8617329420102

CN107983539A - Application of the hydrolysis of polymaleic anhydride in ...

the invention discloses a kind of application of hydrolysis of polymaleic anhydride in scheelite flotation；it is applied to using hydrolysis of polymaleic anhydride as gangue inhibitor in the...

WhatsApp:+8617329420102

Flotation of Dolomite from Apatite - res.mdpi

In this paper, sodium pyrophosphate (NaPP) was introduced as a flotation depressant to selectively separate apatite from dolomite. Micro-flotation tests were performed to reveal the selective depression of apatite by NaPP. In addition, the underlying mechanism was investigated through zeta potential and contact angle measurements, and XPS analyses.

WhatsApp:+8617329420102

Related Posts

Solve the problem?
Get the latest quotation? Hit The Button.

Online Service