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The pure spodumene was obtained from Minas Gerais, Brazil. In addition, the pure feldspar was obtained from Shandong, China. The pure spodumene and feldspar samples were hand selected to remove impurities, crushed, ground, and passed through standard Taylor sieve series to obtain the samples of −74 + 38 μm for flotation testing.
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The effects of Ca(II), Mg(II), Cu(II), and Fe(III) on the flotation separation of spodumene from feldspar and quartz were investigated by single-mineral and artificial-mixed-ore flotation experiments using α-bromododecanoic acid (α-BDDA) as a collector. ... electrostatic repulsion occurs between spodumene and the anionic collector. Thus, an ...
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The selectivity in flotation separation of spodumene from other pegmatic aluminosilicates such as feldspar and mica, using a single fatty acid anionic collector, is found to be very difficult.
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At present, there is no report on the separation of spodumene from feldspar and quartz by using PPPDA as collector. In this work, the collector PPPDA was synthesized in laboratory, and then the flotation behaviors of PPPDA on the separation of spodumene from feldspar and quartz were investigated through single mineral flotation experiments.
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For recovering an enriched KCl fraction from potash ores by electrostatic separation, the ore is conditioned with a reagent comprising an aliphatic amine of 8 - 22 carbon atoms and an ammonium salt of a lower aliphatic carboxylic acid, e.g., laurylamine and ammonium acetate. ... Flotation of spodumene US2927010A (en) : Process for the ...
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A new collector N-{3-[(2-propylheptyl)oxy]propyl}propane-1,3-diamine (PPPDA) was successfully synthesized in laboratory. The flotation behaviors of PPPDA on the separation of spodumene from ...
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Although there are several Li-bearing minerals that can be used to extract Li, spodumene is the primary and most reliable Li resource for industrial application (Li et al., 2019, Xie et al., 2020b).The primary gangue minerals in spodumene include feldspar and quartz (Rai et al., 2011, Tian et al., 2018, Xu et al., 2016) and flotation is the most commonly employed …
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A self-assembly mixed collector system and the mechanism for the flotation separation of spodumene from feldspar and quartz. Author links open overlay panel Ruiqi Xie a b ... but their collecting abilities were not as good as expected in the absence of activator due to the electrostatic repulsion between the collector and spodumene surface (He ...
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The flotation behaviors of α-bromododecanoic acid (α-BDDA) on the separation of spodumene from feldspar and quartz with Ca(II) as activator were investigated through single mineral and artificial mixed ore flotation experiments. Under the condition of α-BDDA concentration of 1.79 mmol/L, Ca(II) concentration of 0.51 mmol/L and pH 7.1, the recovery of spodumene, feldspar …
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spodumene concentrates after roasting and acid roasting operations. A concentrate with at least 6% Li2O (approximately 75% spodumene) is suitable for roasting. Roasting is performed at about 1050°C, during which spodumene will go through a phase transformation from α-spodumene to β-spodumene. The α-spodumene is virtually refractory to hot ...
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In the industrial separation of spodumene, the commonly used methods mainly include flotation method, magnetic separation method, heavy medium method, hand separation method and combined beneficiation …
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Heavy liquid separation (HLS) and dense media separation (DMS) tests were conducted on the pegmatites from Hidden Lake, NWT, Canada to demonstrate the potential …
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III.G.2 Theory of Electrostatic Separation. There are three distinct stages in electrostatic separation processes: particle charging, separation at the grounded surface, and separation caused by the trajectory of the particles. Particle charging can occur by three possible mechanisms: contacting of dissimilar materials, ion bombardment, and induction.
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In this work, we report an alternative method to extract Li directly from α-spodumene, which is performed at lower temperatures and avoids the use of acids. It is shown that Li 2 CO 3 is formed with >90% yield at 750 °C by …
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common technology for the separation of spodumene from the ores. Because the associated minerals in spodumene ore are feldspar, quartz and beryl, which have similar surface ... with -1/2 electrostatic charge, while on the spodumene (110) surface there are two aluminum atoms with +1/2 electrostatic charge that do not meet the coordination ...
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The intermediate-sized fractions (–2 + 0.8 mm and –0.8 + 0.42 mm) responded well to electrostatic separation. Both size fractions result in an enhanced Li 2 O content (>3.5 %) at optimum process conditions of 30 kV applied voltage and 50 rpm. However, finer-sized fractions cannot be treated efficiently using electrostatic separation.
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The feldspar and spodumene powders were an off-whitecolor, the olivine was greenish-white,and the ilmenite was distinctively dark grey. When mixed, the result was a light grey powder. In Figure 5, the as-mademixture is shown on the left, and after separation, the 1sl bin (Left paper) is a much Lighter, and bin 7 (right paper) is
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Lithium is one of the critical elements required for clean energy technology to achieve a carbon-neutral target. In this study, the beneficiation of a low-grade spodumene ore (0.3–0.6% Li 2 O) from Eastern Kazakhstan is investigated by dense medium separation (DMS) and froth flotation to obtain lithium concentrate. The main gangue minerals in the spodumene …
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In the separation of spodumene, flotation separation is undoubtedly the most studied, the most mature, and the most utilized process. The optional test before ore dressing is very necessary. JXSC conducts ore analysis and beneficiation process design for the spodumene concentrator, with stable production indicators and good economic benefits.
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Meanwhile, most of the current researches focus on the separation of spodumene from feldspar. However, the separation of spodumene from quartz is also important, but the related report is limited. ... There was an electrostatic repulsion between spodumene and anionic collectors because the spodumene was negatively charged within broad pH range.
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that the separation of spodumene could be possible using cationic collectors. ... spodumene surface due to electrostatic attraction. As stated, when the collector (i.e., NaOl) is added,
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Adsorption of NaOL on spodumene and albite is attributed to chemisorption with Al. Flotation behavior difference is interpreted by anisotropic adsorption characteristics.
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The separation of spodumene from the majority of its associated gangue minerals is required before extracting Li. Flotation, which has high efficiency in recovering fine-grained mineral particles, is the most crucial method of separation of spodumene and its associated gangue minerals (Chen, 2021, Huang et al., 2022a, Li and Zhang, 2022).
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present in minerals such anorthite, olivine, spodumene, ilmenite, and various feldspars and glass agglutinates. There are several processes in work to extract the oxygen from the regolith; …
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The mixed anionic/cationic collector sodium oleate/ N-lauryl-1, 3-propylene diamine (NaOL/ND13) was firstly used to separate spodumene from feldspar and exhibited high selectivity. The flotation experiments of single and artificial-mixed mineral showed that the mixed NaOL/ND13 (NaOL: ND13 = 5:1) exhibited excellent flotation separation performance for spodumene from feldspar …
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CHAPTER 7 Magnetic and Electrostatic Separation Partha Venkatraman, Frank S. Knoll, and James E. Lawver INTRODUCTION Knowledge of magnetic and electrostatic forces dates back at least to the Greek philosopher Thales of …
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Principles of ElectroStatic Separation. Every mineral species has electrostatic properties that can potentially allow separation in an external electrostatic field. Mineral processing categorises minerals into conductors …
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The present invention relates to a kind of dense medium separations of spodumene mine and the united ore-dressing technique of floatation.Problem to be solved is exactly background technology：Floatation beneficiation cost is higher, and the grade of concentrate is relatively low and needs to set up Tailings Dam；Existing related patents can not be suitable for …
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Electrostatic separation is defined as the selective sorting of electrically charged or polarized bodies under the action of electric field forces [[1], [2], [3]].In 1980, T.B. Osborne patented an electrostatic separation for seed cleaning [4].The first patent on the electrostatic separation of minerals was filed in 1881, and 24 years later Blake was the first to describe a …
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The effects of Ca(II), Mg(II), Cu(II), and Fe(III) on the flotation separation of spodumene from feldspar and quartz were investigated by single-mineral and artificial-mixed-ore flotation ...
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