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separation of apatite and dolomite by flotation zhong

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 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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The role of sodium alginate in the flotation separation of

2020-8-1  The flotation separation of apatite from dolomite can be achieved under the reagent system of adding 20 mg/L SA followed by 1*10 −4 mol/L NaOl in pH 8–11. The contact angle tests and adsorption tests indicate that depressant SA absorbed onto both apatite and dolomite surfaces and the adsorption intensity of the latter was greater than that

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Selective flotation separation of apatite from dolomite

Micro-flotation results indicated that the addition of P (AA-AMPS) could achieve the efficient separation of apatite from dolomite at pH 8.5 by selectively depressing the dolomite flotation, in which more than 87.4% of apatite was recovered whereas the dolomite recovery was less than 14.7%.

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Flotation of Dolomite from Apatite MDPI

2018-6-29  apatite from dolomite. For these reasons, to separate apatite from dolomite effectively, research has focused on developing selective flotation agent. As known, fatty acids are most widely used collectors in the flotation of apatite and dolomite, and the development of novel flotation collectors has been an area of research interest.

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Flotation separation of scheelite and apatite by

2021-8-15  The lumps of pure scheelite and apatite samples (Guangzhou, China) were successively crushed by hand, ground by a mechanized agate mortar and screened to collect 74 + 37 µm size fractions for X–ray diffraction (XRD) analysis, flotation tests and XPS analysis, and 37 µm size fractions for FTIR spectroscopy tests.

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Chunhui Zhong's research works Jiangxi University of

Chunhui Zhong's 5 research works with 44 citations and 28 reads, including: Flotation separation of scheelite and apatite by polysaccharide depressant xanthan gum

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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

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SEPARATION OF DOLOMITE FROM THE SOUTH FLORIDA

2014-12-2  due to possible modification of the apatite surface when in contact with dolomite. Two Stage Conditioning Process: This process involves conditioning the feed at pH 10 followed by reconditioning at a lower pH before flotation. Selective flotation of dolomite from apatite was observed both for single and mixed minerals by reconditioning at pH 4.

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The flotation separation behavior of apatite from 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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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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Double roles of sodium hexametaphosphate in the

2021-10-5  In order to better realize the flotation separation of fine apatite and dolomite, the flotation pulp pH was set at 4.50, as the reported pulp pH was between 4 and 6 to remove dolomite from apatite by reverse flotation . The flotation results for artificial mixed mineral are listed in Fig. 6. Download : Download high-res image (318KB)

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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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Jongsu Hong's research works Kim Chaek University of

Jongsu Hong's 5 research works with 105 citations and 116 reads, including: Improving flotation separation of apatite from dolomite using PAMS as a novel eco-friendly depressant

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Interactions between dissolved mineral species Dolomite

2004-2-4  flotation separation of calcite-apatite system 14.51. Molecular designing of the surfactants (collectors and modifiers). appears to hold most promise here to obtain good scl~cti,'ity in notation process. The objecti,'c of this \vork is to de\'elop new separation schemes for fr3nc<1lite and dolomite

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Effect of geological origin of apatite on reverse

2021-10-1  Micro-flotation tests for dolomite and apatite with different geological origins were carried out using an XFG-Ⅱ flotation machine with a stirring speed of 1700 rpm. The mineral suspension was prepared by adding 3.0 g of apatite (or dolomite) to 40 mL of deionized water in the micro-flotation cell.

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An ion-tolerance collector AESNa for effective flotation

2021-8-15  The separation of magnesite and dolomite has always been a difficult problem in flotation production, one of the reasons is that the dissolved Ca 2+ ions from dolomite weaken the anionic flotation selectivity. In this study, an ion-tolerance collector, sodium fatty alcohol polyoxyethylene ether sulfonate (AESNa), was used to weaken or eliminate the adverse effects of Ca 2+.

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Effect and mechanism of dolomite with different size

2016-3-30  The effect of dolomite with different particle size fractions on hematite flotation was studied using sodium oleate as collector at pH of about 9. The effect mechanism of dolomite on hematite flotation was investigated by means of solution chemistry, ultraviolet spectrophotometry (UV), inductively coupled plasma atomic emission spectrometry (ICP-AES) and X-ray photoelectron spectroscopy (XPS

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Jin YAO PhD Northeastern University (Shenyang, China

In the present work, the flotation separation of magnesite from dolomite was enhanced using sodium dihydrogen phosphate (SDP) as an activator for dolomite and dodecylamine (DDA) as a collector.

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Zhanglei Zhu's research works Northeastern University

Zhanglei Zhu's 28 research works with 298 citations and 1,551 reads, including: Role of surface roughness in the magnesite flotation and its mechanism

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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

get price

Jongsu Hong's research works Kim Chaek University of

Jongsu Hong's 5 research works with 105 citations and 116 reads, including: Improving flotation separation of apatite from dolomite using PAMS as a novel eco-friendly depressant

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Effect of Sodium Pyrophosphate on the Reverse Flotation

In this study, the effect of sodium pyrophosphate (NaPP) on the separation of apatite from dolomite by flotation was systematically investigated. Flotation results revealed that NaPP could 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

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Dolomite-apatite separation by amphoteric collector in

2013-6-7  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

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Selective flotation of dolomite from apatite using sodium

2020-7-8  separation of dolomite from apatite by selective flotation. Flotation behavior of single and mt tests in the pH range of 7 to 11, was not observed in mixed mineral systems. To understand the loss of selectivity in the mixed minerals, electrokinetic, oleate adsorption and solubility studies were conducted. The loss of selectivity

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Effect and mechanism of phosphoric acid in the apatite

To elucidate how phosphoric acid (H3PO4) as a depressant achieves selective separation of apatite and dolomite, the flotation response of these minerals was investigated using both single and

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THE FLOTATIO APATITN OF E AND DOLOMITE IN

2018-5-8  flotation of dolomite from apatite. An attemp t has been made to evaluate the mechanism by which orthophosphat ione s depres s apatite flotation. -2-2 Replacement of SO^ ion ons gypsum by HFO^ ion is s found to occur rapidly in solution. Th presence e of CaHPO^* 211^0 o n gypsum surface iss shown using infrare reflectancd spectroscopye .

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Floating Separation between Collophanite and Dolomite

Adhesion of two bacteria onto dolomite and apatite: their effect on dolomite depression in anionic flotation. International Journal of Mineral Processing. 2001, Vol. 62 (1-4), pp.159-172. DOI: 10.1016/s0301-7516(00)00050-8

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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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Effect and mechanism of dolomite with different size

2016-3-30  The effect of dolomite with different particle size fractions on hematite flotation was studied using sodium oleate as collector at pH of about 9. The effect mechanism of dolomite on hematite flotation was investigated by means of solution chemistry, ultraviolet spectrophotometry (UV), inductively coupled plasma atomic emission spectrometry (ICP-AES) and X-ray photoelectron spectroscopy (XPS

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