Customer case aboutapatite and calcite separation by flotation

apatite and calcite separation by flotation

Flotation separation of apatite and calcite using gum

Flotation separation of apatite and calcite has always been difficult because of their similar physiochemical properties. To realize the flotation separation of the two minerals, many inorganic depressants are usually used, which contaminate the environment.

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The flotation separation behavior of apatite from calcite

Dec 01, 2020 Nevertheless, the flotation of apatite containing calcite remains a problem in practical production. Thus, there is a demand to research more selective and high-performance depressants for the separation of apatite from calcite.

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Calcite-Apatite Flotation Columbia University

Most interesting- the effect of calcite supernatant on its own flotation is also to depress it significantly in this pH range (see Figure 3) Thus, while both the supernatants of calcite and apatite depress calcite flotation under s~ilar pH conditions,their effect is minimal above pH 13.

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Improved Flotation Separation of Apatite from Calcite

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

Jul 01, 2020 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 120 mg/l SPP, and calcite remained floatable at pH 6.5–9.3.

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An Overview of Calcite Recovery by Flotation SpringerLink

高达12%返现 Sep 23, 2020 These minerals are generally separated by flotation and/or magnetic separation (in the case of iron impurities). Calcite ores typically contain metal sulphide, silicate, or other calcium-containing impurity minerals, which can be removed by flotation.

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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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An Overview of Calcite Recovery by Flotation SpringerLink

Sep 23, 2020 Ananthapadmanabhan KP, Sumasundaran P (1984) The role of dissolved mineral species in calcite-apatite flotation. Miner Metall Process 1(1):36–42. CAS Google Scholar Andersen JB, El-Mofty SE, Somasundaran S (1991) Using electrophoresis for determining the mechanism of amine, sulfate and oleate adsorption in calcite.

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US3259242A Beneficiation of apatite-calcite ores

US3259242A US241057A US24105762A US3259242A US 3259242 A US3259242 A US 3259242A US 241057 A US241057 A US 241057A US 24105762 A US24105762 A US 24105762A US 3259242 A US3259242 A US 3259242A Authority US United States Prior art keywords flotation apatite calcite macrocrystalline acid Prior art date 1962-11-29 Legal status (The legal status is an assumption and is

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EFFECfS OF DISSOLVED MINERAL SPECIES ON THE ELECfRO

the basis of their individual properties. Predictions for flotation separation based on single mineral tests often fail in these systems mainly owing to the interactions between dissolved mineral species. The effect of dissolved mineral species of the calcite-apatite system is investigated in this study using the electrokinetic technique.

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Role of Pseudomonas songnenensis-Apatite Interaction on

FTIR spectra of P. songnenensis, apatite mineral, and treated apatite with P. songnenensis. Figure 4 shows that the FTIR spectrum of calcite mineral. It is characterized by a strong band at 1438.4 cm-1, concerning the C-O stretching mode of carbonate and a peak at 874 cm-1 of the bending mode. The symmetric bending is represented by a peak at

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Alizarin Red S as a Flotation Modifying Agent in Calcite

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 100% between pH 6 and 12, with

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Effect of sodium chloride on the selective flotation of

Apatite flotation behavior in the presence of NaCl at pH 9.5 and above is significantly different from that observed in distilled water (refer to Figure 15). On the contrary, dolomite recovery, for the most part, appears to be the same as that obtained in distilled water. Anionic flotation of dolomite from apatite. Separation of calcite and

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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 calcium concentration on calcite flotation from

Abstract. 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 pH=10 followed by calcite flotation at pH=5.5, adjusted with H 3 PO 4.Although this concept is efficient from the point of view of separation between apatite and calcite, the intensive use of

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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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Selectivity in Calcium Mineral Flotation

separation was chosen both due to the inherent difficult separation as well its significance for Luossavaara-Kiirunavaara Aktiebolag (LKAB). Despite the minerals apatite and calcite having the same counter ion, they have different structures and calcium densities, which means different distances between -ions at the mineral surface.

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XRD pattern of the dolomite sample. Download Scientific

Reverse flotation separation of calcium-containing gangue minerals (e.g., calcite and dolomite) from apatite with fatty acids as the collectors by depressing the apatite flotation is regarded as

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US20120087850A1 Process for Obtaining Apatite

The present invention, named Bunge/Fosfertil process, is applicable at different lithologies of phosphate ore with carbonated-silica matrix from igneous and sedimentary sources, i.e., consists of comminutioning the ore by crushing, homogenization, milling and disliming, prior to the apatite flotation. The dislimed and milled ore pulp with solids concentration above 40%, being initialy

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Alizarin Red S as a Flotation Modifying Agent in Calcite

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 100% between pH 6 and 12, with

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A Review of Flotation Separation of Mg Carbonates

Zhou et al. reported that in the flotation separation of apatite from dolomite using conventional air bubble in the presence of the collector (Fatty acids), the contact angles of apatite and dolomite were 72.5° and 67.0°, respectively. However, when oil bubbles were used instead of air bubbles, the contact angles for apatite and dolomite were

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[PDF] Selective Flotation of Calcite from Fluorite: A

Fluorite is an important strategic mineral. In general, fluorite ores will contain a certain amount of calcite gangue mineral. Thus, they need to be separated from each other. For an economic separation, a reverse flotation process is used to float calcite gangue from fluorite. However, little information on the separation is available. In this study, a novel reagent schedule using citric acid

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Process for the froth flotation of calcium phosphate

In the separation of phosphate rock containing apatite and silicate or apatite and calcite, an excellent selective enrichment with respect to calcium phosphate is obtained if the flotation is carried out at a pH within the range from about 8 to about 11, if desired in conjunction with conventional foaming agents, depressants and activators.

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Frontiers Surface Electrical Behaviors of Apatite

The phosphate ore flotation is achieved through the surface electrical behavior difference among apatite, dolomite and quartz, but it is usually affected by the dissolved ions from pulp, especially Ca2+ and Mg2+. The zeta potentials of apatite, dolomite, quartz, and phosphate ore in different solutions were measured to discuss the surface electrical behaviors of them in this study.

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Effect of dissolution kinetics on flotation response of

The objective of this study was to correlate the dissolution kinetics of calcites from different origins and genesis with their flotation response with sodium oleate.The results are intended to help understand why different flotation strategies are applied to separate apatite from calcite in phosphate ores from different deposits (igneous

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Flotation selectivity of novel alkyl core.ac.uk

Flotation selectivity of novel alkyl dicarboxylate reagents for apatite-calcite separation By T. Karlkvist, A. Patra, K. H. Rao, Romain Bordes and Krister Holmberg Abstract

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Biobeneficiation of Iron Ores

Jan 02, 2012 Selective separation of calcite from a binary mixture with hematite was carried out after interaction with bacterial cells. Interaction of mineral mixture with bacterial cells resulted in 74 per cent flotation recovery of calcite and 15 per cent for hematite.

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