"apatite and calcite separation by flotation"

Calcite-Apatite Flotation

2004-2-4 · responsible for the decrease in flotation. 7. Flotation of apatite also was depressed by the supernatants of both calcite and apatite. 8. The effects of supernatants of calcite and apatite on ap-atite flotation is attributed to that of carbonate and phosphate species respectively. 9.

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Apatite Froth Flotation Using Pequi''s Yellow Pulp Oil as ...

2020-1-8 · The hydrophobicity studies show that the selective separation of calcite and apatite can be obtained by using jojoba oil at a pH below 7.0. In this condition, the apatite is hydrophilic and calcite is hydrophobic, allowing their separation through froth flotation. Pequi, Caryocar brasiliense, is an oleaginous fruit with a strong and distinctive ...

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The flotation separation behavior of apatite from calcite …

2020-12-1 · The flotation separation behavior of apatite from calcite using carboxymethyl chitosan as depressant Minerals Engineering ( IF 4.765) Pub Date : 2020-12-01, DOI: 10.1016/j.mineng.2020.106635

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Selective adsorption of sodium polyacrylate on calcite ...

2020-12-1 · The sample of apatite and calcite were purchased from Ye''s Mineral Specimen Group, Guangdong Province, China and the high purities were confirmed by the X-ray diffraction (XRD) analysis and chemical composition analysis (shown in Fig. 1 and Table 1).The apatite contained 39.37% P 2 O 5 and calcite contained 55.98% CaO indicating the purity of hydroxy-apatite is 92.81% and the purity of ...

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The flotation separation of barite-calcite using sodium ...

2019-1-23 · separation of specific components, such as celestite, fluorite and calcite, gypsum and calcite, and apatite and calcite, with good results (Saitoh et al., 2007; Shariati et al., 2011); these results support the idea that the separation of the two minerals barite and calcite may be realized by applying SDS. Therefore, a

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Adsorption of sulfosuccinate collector on apatite and ...

2021-5-7 · A phosphate ore from the Catalão mine (Brazil) poses a challenge for apatite flotation from its carbonate gangue minerals. In recent developments, selectivity has been enhanced by using CO 2 instead of air. The adsorption of the sulfosuccinate collector …

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Flotation selectivity of novel alkyl dicarboxylate ...

Apatite (Ca10(PO4)6F2) is the most important phosphate mineral, and flotation is the main beneficiation method to separate apatite from its major gangue mineral calcite (CaCO3).

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Effect of sodium pyrophosphate on the flotation …

2020-7-1 · Within the range of pH 6.5–9.3, the separation of apatite from gangue mineral calcite can be achieved by flotation in the case of SPP as a depressant (120 mg/l) and NaOL as a collector (20 mg/l). The different components of pyrophosphate and its complexing ability …

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"Investigation of the Mechanism of Apatite/Carbonates ...

The separation of phosphate from carbonate gangue using flotation is extremely complex due to the similarities in surface properties. The acidic flotation process of carbonates at pH 4.5-5.0 followed by a direct phosphate flotation uses phosphoric acid as depressor of apatite during carbonate flotation. The mechanism of apatite depression is rather hypothetical because of lack of data on the ...

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Effect of sodium pyrophosphate on the flotation …

2019-12-11 · In this study, the separation of calcite and apatite was achieved by the depressant sodium pyrophosphate (SPP). Microflotation results showed that when using 20 mg/l sodium oleate (NaOL) as the collector, apatite could be significantly depressed by ...

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(PDF) Investigation of the Mechanism of …

The acidic flotation process of carbonates at pH 4.5-5.0 followed by a direct phosphate flotation uses phosphoric acid as depressor of apatite during carbonate flotation. The mechanism of apatite ...

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Review of the Main Factors Affecting the Flotation of ...

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 …

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Alizarin Red S as a Flotation Modifying Agent in Calcite ...

2003-2-28 · Flotation of calcite and apatite Flotation results obtained for calcite and apatite with oleate are given in Figs. 5 and 6. Calcite shows a sharp drop in flotation between pH 8 and 10; while elsewhere in the tested pH range, flotation is more than 95%. The flo-tation of apatite, on the other hand, is nearly between pH 6 and 12, with

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Effect of calcium concentration on calcite flotation from ...

2020-10-13 · Apatite, calcite, quartz, graphite The separation of apatite from calcite by flotation is extremely difficult due to similarity in the surface physicochemical properties for both minerals Santa Quitéria INB and Yara

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Mechanism of calcium lignosulfonate in apatite and ...

2021-3-4 · 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 depressant ...

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Improving flotation separation of apatite from dolomite ...

2020-9-1 · Froth flotation is widely used as an effective method for separating apatite from dolomite. However, it is of difficulty to realize the efficient separation of apatite and dolomite using the traditional fatty acid collectors without any depressants due to their similar physicochemical properties.

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Flotation selectivity of novel alkyl dicarboxylate ...

Flotation selectivity of novel alkyl dicarboxylate reagents for apatite-calcite separation Karlkvist, Tommy Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering.

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Frontiers | The Challenge of Tungsten Skarn Processing by ...

The flotation separation of scheelite from fluorite, apatite, and calcite has been intensively investigated over the past decades and remains, in the twenty first century, one of the most challenging problems in the froth flotation field.

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Flotation Separation of Apatite From Dolomite Using ...

Conventional flotation scheme is not successful for separation of dolomite from its mixture with apatite. Several processing methods utilizing both anionic and cationic collectors have been proposed to solve this problem, but they have yet to be tested on a commercial scale.

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Flotation of Dolomite from Apatite

2018-6-29 · selectively depress the flotation of apatite, thus realizing the separation of apatite from dolomite. Further, the selective depression mechanism of NaPP was studied through zeta potential measurements, contact angle measurements, and X-ray photoelectron spectroscopy (XPS) analysis. The results demonstrated that

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An Alternative Flotation Process for Apatite …

2020-10-13 · Calcite flotation –Coarse fraction Effectof the collector dosage –Float Mineralogical composition 75 100 93,1 90,8 89,9 86,3 Mineral (%) Quartz Apatite Calcite 0 25 50 200 300 400 500 1,4 1,1 1,2 1,1 2,0 3,2 4,4 9,6 Coconut soap (g/t)

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Role of Dissolved Mineral Species in Calcite-Apatite Flotation

Supernatants of apatite and even that of calcite depressed the flotation of calcite markedly in the pH range of 5 to 13. Addition of Ca(NO3)2, K2CO3, and K3PO4 also produced definite effects under various pH conditions. Apatite flotation was also affected by the mineral supernatants and by carbonate and phosphate solutions.

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PDF Reagents used in the flotation of phosphate ores A

2019-12-31 · This work carried out with a silicatecarbonate phosphate ore aimed at studying the performance of depressant agents of different origins in the separation of apatite from the contaminants calcite and silicates by laboratory scale flotation 2 Materials and methods. Separation of Dolomite from the South Florida Phosphate

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Improved Flotation Separation of Apatite from Calcite with ...

Apatite (Ca10(PO4)6F2) is the most important phosphate mineral, and flotation is the main beneficiation method to separate apatite from its major gangue mineral calcite (CaCO3).

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On-line analysis of flotation process waters at ...

In the case of the separation of calcite and apatite by flotation, Ca 2+, CO 3 2− and HCO 3 − are such species, and the variations of their aqueous concentrations can be expected to influence the process performance. In this study, both the long-term and short-term variations of pH, as well as the above-mentioned concentrations in two ...

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Selective adsorption of sodium polyacrylate on calcite ...

2020-6-15 · In the flotation separation of apatite and calcite, fatty acid collectors are adsorbed on both mineral surfaces owing to the presence of the same calcium ions on the cleavage planes,, . Therefore, the floatability of both minerals is excellent and the flotation selectivity is very low.

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(PDF) Effect of calcium concentration on calcite flotation ...

The flotation process currently considered for apatite concentration from the Santa Quitéria phosphate deposit (Brazil), involves bulk flotation of apatite and calcite with anionic collector at ...

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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 …

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Selective adsorption of sodium polyacrylate on calcite ...

Flotation separation of apatite from calcite could be achieved with PAAS. Abstract. In this study, the selectively depression effect of sodium polyacrylate (PAAS) on the flotation separation of apatite from calcite was studied. The floatability of apatite and calcite in the absence and presence of depressant PAAS using sodium oleate (NaOL) as ...

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FLOTABILITY STUDIES OF THE MINERALS APATITE, …

2015-8-12 · these minerais that are presenl in carbonated Brazilian phosphate rocks and are concentrated by froth flotation. 2-MATERIALS AND METHODS ln this work mineral samples of apatite, calcite and dolomite were used in lhe size range from 147 to 44Jlm. Their chemical compositions are presenled in Table II.

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Minerals | Free Full-Text | Occurrence of Sesquioxide in a ...

Goethite, dolomite, muscovite and calcite are closely intergrown with apatite in fine grain size, therefore, they are difficult to be separated during beneficiation and the separation cost is high. Since different elements in the same mineral are difficult to separate by flotation, leaching can be considered to remove aluminum from apatite.

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