The effect of calcite on malachite sulfidization flotation was investigated by micro-flotation tests, adsorption, sedimentation and zeta potential test. The micro-flotation results showed that the ...
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China Baiyin Flotation Reagents Factory. Test method and device ... Sulfi disation promotion eff ect test using pure mineral—malachite Consideration of the complexity of practical production, the malachite sample used in this study is mixed size fraction of -100μm. Four malachite samples, each 0.5g, were prepared for the following
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Microflotation studies. The flotation recovery of malachite as a function of sodium butyl xanthate (NaBX) concentration in the absence or presence of different ammonium sulfate concentrations with 5 × 10 −4 mol/L Na 2 S·9H 2 O as a sulfidizing agent is shown in Fig. 1.With NaBX as the collector, malachite floatability was weak without sulfidation prior to …
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To identify the flotation behavior of malachite with different CB-NP concentrations and flotation times, the flotation experiments were performed with 0.5–12 kg/ton CB-NPs and a flotation time of 5–60 min. Note that all flotation tests were conducted using samples with residual CB-NPs in suspension after CB-NP deposition …
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The flotation test results showed that TMT exhibited superior activation performance over sodium sulfide, achieving a high flotation recovery rate of 97.50 % at TMT 90 mg/L and pH 7. The contact angle confirmed malachite improved from 53.3° to 90.1° after TMT treatment, indicating enhanced hydrophobicity of the mineral surface.
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For the single-mineral flotation test, malachite (2 g) and deionized water at the required concentration for the test were placed in the cell. The reagents were added in sequence and allowed to react for a period of time. Copper lead zinc ore was used to prepare the copper oxide samples, and the original sample was screened. ...
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For the single-mineral flotation test, malachite (2 g) and deionized water at the required concentration for the test were placed in the cell. The reagents were added …
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Two grams of the prepared malachite powder were used as test samples, and the flotation reagents were added in se-quence. After the sample interacted with the flotation …
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Based on the flotation test, the maximum recovery of malachite sulfidization flotation was reached at pH 9. Under this condition, Cu 2+ complexes mostly remained as Cu (II)–OH complexes in the absence of NH 3. During malachite flotation, Cu (II)–OH complexes reacted with S (II) complexes to form colloidal copper sulfide, which hindered …
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The effect of calcite on malachite sulfidization flotation was investigated by micro-flotation tests, adsorption, sedimentation and zeta potential test. The micro-flotation results showed that the ...
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The effect of ammonium ion on the sulfidation flotation of malachite was investigated using microflotation test, inductively coupled plasma (ICP) analysis, zeta potential measurements, and ...
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At the Na 2 S concentration of 5 × 10 −4 M recommended by the flotation test, the adsorption density of S species on the TEA-modified malachite surfaces was approximately 0.118 mmol/m 2, which was about 13.46 % higher than that on the unmodified malachite (approximately 0.104 mmol/m 2). The results also provided evidence that TEA ...
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In each flotation test, 3 g of the fine malachite sample became condi- tioned for 3 min in a regarded quantity of deionized water in a 50 mL beaker, and the impeller velocity was held at a steady ...
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The depression of malachite flotation by excess sulfide ions was attributed to the residual sulfide species in the liquid. FESEM–EDS showed that sulfidization product grown on the malachite ...
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The depression of malachite flotation by excess sulfide ions was attributed to the residual sulfide species in the liquid. ... The flotation test results showed that the sulfidation level of ...
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This test was performed using the XFG–II flotation machine at an available cell of 40 mL and the rotation speed of 1600 r/min was used in the malachite flotation test. Before the experiment, a malachite sample (2 g) was placed in a flotation tank, and 35 mL of ultrapure water was added for slurry mixing.
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The pure malachite sample utilized in the experimental study was obtained from Daye, Hubei Province. The samples were screened after grinding, and the products within a particle size range of 37–74 μm were collected for micro-flotation test.
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The flotation experiments demonstrated that 6 × 10⁻⁵ mol/L OCETC enabled the recovery of up to 98.24% malachite at pH 8.0. Under the same flotation conditions, OCETC exhibited comparable ...
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In single mineral flotation test, 40 mL of deionized water and 2.0 g of malachite or talc samples were placed in the flotation cell. Then, NaOH or HCl solution was used to adjust the pH to an expected value, after which the desired amount of famciclovir was added and allowed to react for 3 min, and then 2# oil was added and …
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At pH 6.50, with 8 mg/L SDA, effectively recovering malachite from quartz was achieved by reverse flotation, in which 92.71% of malachite was recovered and 91.91% of quartz was removed, coupled ...
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Its flotation performances and adsorption mechanism were systematically investigated by micro-flotation experiments, contact angle measurements, SEM-EDS, FT-IR, XPS and DFTB+ simulations. The micro-flotation test results showed that 5-NSA produced high recovery of malachite at pH 9.0–10.0, while showing lower collecting …
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Calcite Flotation Test 6 ... Copper carbonate in the form of malachite and azunite are more common and arc frequently seen intermixed with chrysocolla and iron oxide with a grain size up to 750µm. Chalcocite is the most abundant copper sulfide and is generally seen replacing chalcopyrite and bornite. It is common to see chalcocite with …
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In each flotation test, 3 g of the fine malachite sample (−25 µm) was conditioned for 2 min in 130 mL of distilled water, and the suspension was adjusted to the desired pH by using HCl or NaOH. Then, a given amount of octyl hydroxamate was added and conditioned for 3 min. After that, the conditioned slurry was transferred to the …
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The testing instrument was ESCALAB 250Xi from Thermo Fisher Scientific, using a monochromatized Al-Ka X-ray source. The high-resolution XPS spectra of Cu, N and S were scanned 16 times with a scan step of 0.05 eV and an average dwell time of 300 ms. ... Compared to the traditional collector OHA for malachite flotation, MHCODT …
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The role of gangue minerals including quartz and calcite slimes in the sulfidization flotation of malachite was investigated by micro-flotation tests, sedimentation analysis, zeta potential ...
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In each flotation test, 3 g of the fine malachite sample became conditioned for 3 min in a regarded quantity of deionized water in a 50 mL beaker, and the impeller velocity was held at a steady l750 rpm. After that, pH regulators (stirring for 1 min) and the pH of the pulp were adjusted to around 8.7.
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Malachite is one of the most important copper-bearing oxide minerals; however, it shows poor floatability prior to sulfidization under the thiol collector system. …
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The micro-flotation test was investigated with a XFG Ⅱ flotation machine (Jilin, China) provided with mechanical agitation with 40 mL cell volume at the impeller speed fixed at l650 r/min. Before any other chemical reagent addition, 2.0 g malachite was dispersed in de-ionized water for 1 min.
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all the test processes. Intensity / a.u. Malachite PDF No. 41-1390 2 / (°) Fig. 1. XRD pattern of malachite samples. 2.2. Micro-flotation experiments Flotation was conducted in a 40 mL XFG–II micro-flota-tion machine. A malachite sample (2 g) with particle sizes of 38–74 μm was used during the micro-flotation test. A CuSO4
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The micro-flotation test results indicated that the modified ether amine collector had a higher collecting ability for quartz than for petalite, with a maximum recovery rate of 93.2% for quartz ...
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