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The physical and chemical properties of feldspar and quartz are highly similar, thus they cannot be easily separated effectively. In this work, the flotation separation of feldspar from quartz using sodium fluosilicate (Na 2 SiF 6 ; SF) as a selective depressant was investigated. Moreover, the influence mechanism of SF on the selective flotation …
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Nowadays, the most efficient process for Kfs flotation from quartz applies amine as a collector in acidic conditions produced by HF acid [14,15]. Feldspar is floated from a …
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In this study, a potassium feldspar are containing mainly quartz and coloring impurities was subjected to beneficiation tests involving magnetic separation and flotation, which were …
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Semantic Scholar extracted view of "Flotation of quartz from quartz-feldspar mixtures by the HF method" by E. Larsen et al. ... (2-aminopropyl ether) (PEA) with multiple amine groups was utilized as a collector for flotation separation of quartz from …
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It's highly challenging to separate feldspar from quartz by flotation owing to their similar crystal structure and physicochemical properties. Using mixed collectors has become a promising method to improve the quartz-feldspar separation. In this study, mixed dodecyl amine (DDA) and sodium petroleum sulfonate (SPS) surfactants were …
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Inhibitors are important for flotation separation of quartz and feldspar. In this study, a novel combined inhibitor was used to separate quartz and feldspar in near-neutral pulp. Selective inhibition of the combined inhibitor was assessed by micro-flotation experiments. And a series of detection methods were used to detect differences in the …
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1. Introduction. Spodumene is one of the common hard rock lithium resources which shows reliable industrial value [1], [2].Feldspar and quartz are the main gangues associated with spodumene [3], [4].Flotation is the most common method used to concentrate spodumene, especially to concentrate complex or low grade spodumene …
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The flotation separation of spodumene from other complex aluminosilicate minerals such as feldspar and mica, is problematic, due to their same active Al site for interaction with anionic collectors (Rai et al., 2011). In practice, the general method to accomplish effective spodumene flotation is to add amount of depressants associated …
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Flotation separation of quartz from feldspar 1241 20 E .3 • quartz A micro©line Ca +2 l x l O ' 3 k m o l / m 3 NaCI l x l O ' S k m o l / m 3 0 _< I- z UJ I- 0 O. -20 gl ! -40 2 4 6 8 10 12 I 14 pH Fig. 13 Zeta potential of quartz and microcline investigated as a function of pH in the presence of calcium chloride. CONCLUSIONS Hallimond tube ...
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This note describes a simple method for the quantitative separation of pure quartz from feldspars. This rapid and effective technique is particularly useful in the separation of silicate for oxygen isotope analysis and whenever high purity quartz samples are needed.
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After the sample preparation, the purity of coarse and fine quartz extracts was examined, particularly to check whether K-rich feldspars were effectively removed by the sample preparation procedure.
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Quartz and feldspar are usually exist in symbiosis in nature, and they are difficult to be separated effectively by conventional physical methods owing to their similarities in crystal structures and surface characteristics. Flotation is the most resultful method, and especially, flotation with hydrofluoric acid (HF) is the most efficient way. …
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This study demonstrates a high froth flotation separation selectivity between quartz and feldspar and that quartz can be readily floated in diluted HF solutions with several frothers. A comparative study …
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ABSTRACT As we all know, sodium oleate (NaOL) is usually used as a collector for oxidized minerals, but in this study, it is used as an activator for feldspar to separate from quartz. Therefore, the adsorption mechanism, topography, and configurations of NaOL on the quartz and feldspar surface were investigated using X …
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Therefore, flotation has become the main method to separate potassium feldspar from quartz. The separation of potassium feldspar from quartz with anion and cation mixed collector was studied in ...
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EMDEE and simulated batch cell flotation tests show that quartz-feldspar separation with EDTA occurs at pH values around 2. However, as the action …
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For that reason, research has leaned toward new schemes without the usage of HF for feldspar/quartz separation [10,[13][14][15]. Besides other types of collectors such as anionic, cationic or non ...
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Unfortunately, in almost all unseparated samples giving both quartz and feldspar luminescence signals, the feldspar OSL (stimulated by blue or green wavelengths) intensity is similar to, or greater than, that from quartz. Separation of quartz and feldspar signals has been achieved before using prior IR and/or pulsed visible light …
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Laboratory application of flotation to the seraration of oligoclase feldspar from quartz yields good results. Quartz in excess of 3 percent remained in only two of the seventeen samples studied. ... {Separation of feldspar from quartz by flotation}, author={Lawrence J. Herber}, journal={American Mineralogist}, year={1969}, volume={54}, pages ...
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A magnetic separation technique is required for feldspar purification since non-magnetic feldspar accompanies some worthless magnetic minerals such as rutile, hematite, pyrite, tourmaline, and ...
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This concentrate was obtained under the optimum conditions to feed the magnetic separation process. For feldspar/quartz separation, the best feldspar concentrate was obtained using 582 g/t quaternary ammonium salt solution as a collector and 2000 g/t HF as an activator/depressant at an acidic medium of pH 2.5, and at 1200 …
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petroleum sulfonates as anionic collectors for the flotation separation of quartz and feldspar. Another issue related to feldspar-quartz separation is the development of efficient and selective depressants, in weak acidic pulp. There are very few studies on depressants for flotation separation of quartz and feldspar (Feng et al., 2018).
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Quartz can be floated from feldspar in diluted HF solutions simply by the aid of frothers.. There is a high flotation separation selectivity between quartz and different types of feldspar.. A feldspar concentrate of 99.9% at a recovery of >95% was produced. • The results could be important for cleaning and recycling purposes.
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Influences of pH on the separation of spodumene from feldspar and quartz using Ca(II), Mg(II), Fe(III), and Cu(II) as activators were analyzed at an α-BDDA concentration of 1.43 mmol/L and an activator concentration of 0.69 mmol/L. ... Recoveries of feldspar and quartz were insensitive to changes in the Mg(II) concentration, whereas …
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DOI: 10.1016/j.quageo.2022.101315 Corpus ID: 248460631; A new and effective method for quartz-feldspar separation for OSL and CRN dating @article{Singh2022ANA, title={A new and effective method for quartz-feldspar separation for OSL and CRN dating}, author={Atul Kumar Singh and Ishita Manna and Pavitra K. Kumar and Anit Dawar and …
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The quartz and feldspars account for 2.3–22.7 wt% of the samples. X-ray diffraction analyses detect both plagioclase feldspar and potassium feldspar. ... using a diffractometer Rigaku MiniFlex II with Cu Kα radiation at JAMSTEC to check the effectiveness of the chemical separation, and to evaluate feldspar mineralogy and …
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This study demonstrates a high flotation separation selectivity between quartz and different types of feldspar, and that quartz can be readily floated from feldspar in …
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The optimal process conditions for flotation separation of quartz and feldspar are a pH of 2.7, a DDA/SDS mixing ratio of 3:1, and a dosage of 200 g/t. (3) The process plan achieves the objective of efficiently recovering feldspar, quartz, and kaolin from weathered granite. It also ingeniously considers the intermediate value of mineral ...
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Quartz is often symbiotic with feldspar silicate minerals, which is difficult to separate and purify because of their similar physical and chemical properties. Flotation is the most effective method for the separation of quartz and feldspar. The main flotation methods for the separation of quartz and feldspar, such as hydrofluoric acid method, …
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This paper reviews the application of flotation for the separation of feldspar from the other minerals with which it naturally occurs (such as quartz, clay minerals, …
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The main gangues associated with spodumene are feldspar and quartz [6], [7]. Since the density of spodumene, feldspar and quartz is close, it is hard to separate spodumene from feldspar and quartz effectively by gravity separation.
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