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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At pH≈7, Ca(II), Mg(II), and Cu(II) selectively improved the flotation of spodumene, which facilitated the separation of spodumene. Although Fe(III) exhibited strong activation …
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The separation of spodumene and albite was due to the selective adsorption of DDPA on the surface of spodumene, and more DDPA were adsorbed on the surface of spodumene than on albite under the same conditions. ... Consequently, the excessive electrostatic repulsion between the two hindered adsorption [9]. High concentrations of OH ...
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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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The mineralogical data indicate the potential to recover spodumene by flotation with minimal Li losses due to other than spodumene carriers. Heavy liquid separation was conducted on the Master ...
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A new combined collector of NaOL and 1,12-Dodecanediamine (DA122) was used for efficient flotation of spodumene from feldspar. The disparities in mineral flotation efficacy between the combined collectors of NaOL/1,12-Dodecanediamine and NaOL/Dodecylamine (DDA), as well as the underlying mechanisms, were comprehensively analyzed by the …
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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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Single-mineral flotation results showed that using 30 mg/L SA allowed the separation of spodumene from feldspar at pH 6, although there was a strong pH dependence. ... electrostatic separation ...
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The results demonstrated that PPPDA could be adsorbed on spodumene, feldspar and quartz through both electrostatic attraction and hydrogen bond. The amounts of PPPDA adsorbed on feldspar or quartz were much more than those on spodumene, which led to higher recovery for feldspar and quartz. ... The flotation behaviors of PPPDA on the separation ...
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As electrostatic interaction is the most commonly accepted model used to explain the adsorption of collectors on silicate mineral surfaces, it may be expected that spodumene, beryl and microcline show similar flotation behaviour due to similarities in surface chemistry. ... the separation of spodumene from feldspar and quartz gangue minerals at ...
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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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Dense Media Separation The specific gravity of spodumene is approximately 3.15, allowing it to be separated from other silicate minerals (i.e., quartz and feldspar, S.G. 2.5 and 2.6, respectively) by dense media separation. If spodumene is sufficiently liberated at a coarse particle size, DMS can produce a high-grade mineral concentrate and ...
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The experimental results indicated the separation of spodumene from feldspar with a recovery of 88%, having an assay of 4.6% Li 2 O. Higher selectivity was attributed to the …
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Electrostatic separation is one of the most misunderstood physical processes used to beneficiate minerals. Nonetheless, millions of tons of titanium ores, iron ores and other minerals are processed every year economically, efficiently and safely. Over the past ten years major advances in electrostatic separation and its application have occurred.
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Optimization of electrostatic separation processes demands the control of a multitude of factors, including the characteristics of the granular mixtures to be sorted, the feed rate, the ...
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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 mineralogical data indicate the potential to recover spodumene by flotation with minimal Li losses due to other than spodumene carriers. Heavy liquid separation was conducted on the Master ...
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However, only some of them have commercial/industrial utility: lepidolite, spodumene, petalite, amblygonite–montebrasite, and zinnwaldite (Sadoway 1998, Levich 2009). ... dry pre-concentration of lithium-bearing minerals (Brandt and Haus, 2010, Iuga et al., 2004, Leißner et al., 2016). Electrostatic separation and ore sorting are dry ...
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The electrostatic separation tests were conducted on two different size classes. The size class -315 +60 μm was tested on a free-fall separator and the size class -60 μm was tested on an …
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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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The zeta potential measurement results showed that NaOL and ND13 adsorbed on the mineral surface through chemical and electrostatic adsorption, respectively. ... The separation of spodumene and quartz is relatively difficult as they have similar physicochemical properties. To solve this problem, the role of carboxylate chitosan (CCS) in the ...
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As the primary purpose of implementing electrostatic separation is for the bulk reduction of sample volume, it turned out that KWS treatment, even with a large amount of fine particles being removed by dry-sieving, enabled only a reduction of the original volume of ∼15%. Taken into account that the time taken to perform this reduction was 7 h ...
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This study provides further information in the role of NaOH in the flotation separation of spodumene from feldspar and quartz using size distribution analysis, micro-flotation experiments, AFM ...
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In general, spodumene separation is a multistage process, complicated by similarities in the physicochemical properties of the ore and gangue minerals. Spodumene beneficiation flowsheets can include a …
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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 role of this technology in the concentration of …
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In general, spodumene separation is a multistage process, complicated by. similarities in the physicochemical properties of the ore and gangue minerals. Spodumene.
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Mineral Processing. Errol G. Kelly, in Encyclopedia of Physical Science and Technology (Third Edition), 2003 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 …
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The electrostatic repulsion between the ―COO − groups and negative spodumene surface formed a barrier for DIDA to be adsorbed on spodumene, which might have explained for the unexpected recovery of spodumene. Meanwhile, the mixed collector HPA/ DIDA was self-assembled to HPA-DIDA complex, which was adsorbed on spodumene by both …
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Due to the similar surface characteristics shared between spodumene and gangue minerals like feldspar and quartz, conventional anionic collectors, such as fatty acid collectors, yield suboptimal results in the flotation separation of spodumene from gangue minerals [5], [6], [7].Researchers have extensively explored combined anionic and cationic collectors, which …
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12-ADA adsorbed on spodumene by multilayer electrostatic attraction. The separation of spodumene and albite by the new collector 12-aminododecanoic acid (12-ADA) …
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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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Spodumene, a lithium-bearing mineral, is a valuable resource for lithium-ion batteries. Extracting spodumene from its ore requires efficient beneficiation processes. Flotation is a commonly used method for separating …
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B03 — SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; ... 1962 3,028,008 SEPARATION OF SPODUMENE AND BERYL BY FLOTATION James S. Browning, Tuscaloosa, Ala., and Ballard H. …
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The mechanism of anionic/cationic combination collector ST-8 for the efficient separation of spodumene and feldspar was investigated by flotation tests, surface tension measurements, zeta...
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Magnetic separation technology plays an important role in upgrading such low-grade iron ores, because the magnetic separation process possesses the combined advantages of large capacity and low operating cost, as well as being environmentally friendly. ... However, the magnetic susceptibility of dark gangue minerals, such as spodumene, chlorite ...
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For instance, in the processing of titanium-bearing minerals, magnetic separation is often used as a pre-concentration step, followed by electrostatic separation for final purification. Factors Affecting Electrostatic Separation. Particle size: Electrostatic separation is most effective for particles in the range of 0.1 to 2 mm.
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