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2.1 Synthesis of Pd NPs stabilized with NaOL and CTAC and evaluation of reaction conditions Uniform NaOL and CTAC-stabilized Pd NPs were synthesized without the use of traditional reducing agents using a simple one-pot approach (Fig. 1a). Fig. 1b and c show the TEM images of the highly monodisperse Pd NPs under two different
In the flotation of semi-soluble minerals such as calcite and fluorite, Ca2+ is one of the common dissolved components influencing the collector adsorption behaviors on the mineral surfaces. However, there is …
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STSP can strongly interfere with the adsorption of NaOl on the surface of calcite. ... Then using a magnetic stirrer to fully stir the ore slurry, and added the corresponding concentrate of medicament to the ore slurry according to the flotation flow chart. The pulp was stirred for 5 min and then allowed to stand for 5 min, and supernatant …
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Characteristic bands of NaOL appeared after treatment with NaOL, thereby indicating that NaOL was adsorbed onto the calcite surface. Meanwhile, after the EDTMPS treatment, characteristic bands of EDTMPS were seen at 1087.7 and 940.9 cm −1, which shifted by 30.8 and 17.6 cm −1 to the right, respectively, thereby indicating that there was …
NaOl had a good collecting ability for both fluorite and barite. ... of −5 μm minerals was mixed in 80 mL of 1 × 10 −3 mol/L KNO 3 background electrolyte solution and dispersed with a magnetic stirrer in the absence or presence of reagents at the desired pH value. After 10 min of settling, the supernatant was collected for zeta potential ...
The flotation experiments for binary mixed ore showed that the final wolframite concentrate product with a WO 3 grade of 58.82% and recovery of 80.46% was obtained by 2 × 10-4 mol/L DPA collector at pH 7, while using the traditional sodium oleate (NaOL) collector, the concentrate with a WO 3 grade of 33.9% and recovery of 73.82% was …
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Fig. 4 illustrates the flotation behaviors of ilmenite and titanaugite using 2.0 × 10 −4 mol·L −1 of NaOL collector at various pH levels. The results showed that the flotation behaviors of ilmenite and titanaugite were sensitive to the pH value, and the flotation recoveries of both minerals exceeded 60% at pH 5.0–8.0.
DOI: 10.1016/J.COLSURFA.2019.03.064 Corpus ID: 109531072; Use of NaOL and CTAB mixture as collector in selective flotation separation of enstatite and magnetite @article{Yang2019UseON, title={Use of NaOL and CTAB mixture as collector in selective flotation separation of enstatite and magnetite}, author={Zhichao Yang and Qing Teng …
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Pb and BHA in Pb-BHA-NaOL collector assembled by lead nitrate (Pb), benzohydroxamic acid (BHA), and sodium oleate (NaOL) with a 240:120:1 molar ratio in scheelite flotation have the common defects of flotation reagents including high cost, environmental pollution and reducing hydrometallurgy efficiency. ... Magnetic …
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Analyses of bubble collision-attachment show that when using mixed NaOL/CTAB as the collector, the bubble could quickly form a three-phase contact (TPC) line on spodumene surface ... The application of magnetic separation and ore sorting techniques in the processing of spodumene has also been deliberated. The beneficiated …
The objective of this study was to investigate the effects of Ca(II) and Mg(II) ions on the flotation of spodumene. Fig. 1 shows the flotation recovery of spodumene as a function of pH with and without Ca(II) or Mg(II) ions, and with 6 × 10 − 4 M NaOL. The flotation recovery of spodumene in the absence of cations reached a maximum value at a …
This study presents the synthesis of monodisperse Pd nanoparticles (NPs) stabilized by sodium oleate (NaOL) and hexadecyltrimethylammonium chloride (CTAC). The synthesis was conducted without traditional reductants and Pd-precursors are reduced by NaOL. It was confirmed that the alkyl double bond in NaOL is
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When a mixed collector NaOL/DS was used, the grade and recovery of Li 2 O in concentrates increased to 6.53 % and 82.67 % compared to 5.76 % and 68.11 % using collector NaOL alone. Therefore, the results of artificial mixed minerals experiments advance the evidence that the mixed collectors have strong collection and selective performance …
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Prior to flotation experiments, the material was crushed, screened and magnetic separated with a high intensity permanent magnet (permroll). From this material a 38–208 ... between quartz and feldspar after activating with CaCl 2 and expand the floated pH range of quartz compared with using NaOL as collector alone, ...
After magnetic stirring for 5 ... Fig. 3 shows that the best pH range for the flotation of spodumene using anionic collector NaOL is 8–9, as most studies have recorded (Xu et al., 2016b). Because the maximum flotation recovery of spodumene using NaOL is only approximately 50%, NaOL has a limited ability to flotation-separate spodumene from ...
The flotation behavior of magnetite and enstatite using NaOL and CTAB as collector was evaluated by the single mineral flotation tests. Fig. 2 shows the effect of pulp pH on the flotation recoveries of magnetite and enstatite. The recovery of minerals increases as pH value increases from 2.2 to 4.0, and then remains over 90% at pH 6.0–11.8 in …
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