Highly selective flotation separation of chalcopyrite and …
Microflotation experiments of single mineral showed that an amazing flotation selectivity against pyrite combined with powerful collecting ability towards chalcopyrite was …
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Welan gum as a new depressant for the flotation separation …
It depresses talc in the flotation system, thereby improving the flotation index of chalcopyrite. The flotation test results showed that under the action of an 80 mg/L depressant, a chalcopyrite concentrate with Cu grade of 28.87 % and Cu recovery rate of 86.72 % was obtained, indicating efficient separation ability of chalcopyrite-talc.
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An eco-friendly depressant derived from grape seed extract …
From the test results of depressant dosage, PC is an inhibitor of chalcopyrite and pyrite flotation, and the flotation separation effect is good. At a PC dosage of 75 mg/L, the recovery rates for chalcopyrite and pyrite are 95.29 % and 9.32 %, respectively.
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Oxygen demand test: A diagnostic tool for determining the …
Flotation tests showed that chalcopyrite flotation rate, recovery and grade, as well as the pulp oxidation potential, decreased with increasing pyrite content whilst pyrite recovery increased ...
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Study on flotation behavior and mechanism of separating chalcopyrite …
Mixed mineral flotation test A mixed ore comprising chalcopyrite and molybdenite was prepared by mixing chalcopyrite and molybdenite (mass ratio of 1:1). Based on the operation steps of single-mineral flotation, the speed was adjusted to 1549 rpm, and the flotation time was set to 3 min.
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Welan gum as a new depressant for the flotation separation …
The Single mineral flotation test was conducted in a 40 mL flotation cell. 2.0 g of the ground chalcopyrite and the requisite amount of deionized water were mixed in a clean beaker. And then washed the ore pulp under ultrasonication waves for 5 min to eradicate the oxide coating on the surface of the chalcopyrite.
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Study on the selective separation mechanism of tannin acid …
Chalcopyrite and talc have similar hydrophilicities; therefore, their selective separation is difficult. Chalcopyrite and talc can be primarily separated by increasing the difference between their wettability using a flotation depressant [3], [4], [5].Organic depressants contain hydroxyl and carboxyl groups and can selectively absorb talc via hydrogen bonding or …
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A non-inhibitor flotation process for selective enrichment of
Fig. 2 (a) illustrates the relationship between the flotation results of chalcopyrite and molybdenite and pH value of pulp at collector dosage of 1×10 −5 mol·L −1. As depicted in Fig. 2 (a), pH value exerts negligible impact on the flotation performance of chalcopyrite, while it significantly affects the recovery of molybdenite. Compared ...
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Flotation Separation of Chalcopyrite and Talc
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Flotation separation of molybdenite from chalcopyrite …
The flotation test results indicated that chalcopyrite and molybdenite had high recoveries of more than 90% and 80%, respectively, in the tested pH range of 4–12; thus, it would be considerably difficult to separate chalcopyrite from molybdenite without a …
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Evaluation of the effect of the main parameters on chalcopyrite …
Clay minerals are known to negatively affect sulfur flotation. In the present study, the effect of clay minerals (kaolinite-montmorillonite) on chalcopyrite flotation was investigated and it was aimed to propose solutions to eliminate the negative effects. In the experimental studies, ζ-potential measurements and flotation experiments were carried out. The central …
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Flotation kinetics and thermodynamic behavior of …
alkaline pH regulator. The current study examines the effects of NaOH and lime on the flotation behavior of chalcopyrite and pyrite. In the flotation test, SBX with a concentration of 0.1 mol·m-3 was used as collector, H 2 SO 4 and NaOH or lime were used as pH regulators, and 1×104# 20 >& % >' + – + and
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Chalcopyrite : (Copper) Properties, Formation, Uses, Deposits
Chalcopyrite is one of the most important copper ores and is widely distributed in various geological environments. ... mineral, and its copper content can be confirmed through various chemical tests, such as the use of a copper flame test or chemical ... grinding, and flotation to separate the copper minerals from the gangue minerals. The ...
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Investigation on flotation separation of chalcopyrite from …
Single mineral flotation test results showed that both chalcopyrite and talc were floatable in the tested pH range of 3–11 and that locust bean gum depressed the flotation of both minerals ...
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The Mechanism of the Effect of Pre-Magnetized Butyl …
The monomineral flotation test results showed that, after the magnetization pretreatment of butyl xanthate solution, the chalcopyrite flotation recovery was increased by nearly two percentage ...
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Influences of collector DLZ on chalcopyrite and pyrite …
2.2 Flotation test Before flotation test, the mineral sample of 2.0 g was put into a beaker (100 mL) and treated to clean the surface for 5 min using supersonic cleaner. Flotation of the minerals was carried out in flotation machine with a cell of total pulp volume of 40 mL. After adjusting pH value to an appropriate value, the mineral pulp was
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Insight into the effect of ultrasonic treatment on surface …
Before the micro-flotation test, horn-type ultrasound treatment of chalcopyrite slurry is as follows: 1 g chalcopyrite sample was transferred into a 50 mL high glass beaker using 30 …
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Mechanism of Mechanical Entrainment in Chalcopyrite Flotation…
Effects of clay types and clay amount on chalcopyrite flotation were investigated by flotation experiments. Interaction mechanisms between the clay minerals and ore were characterized using SEM–EDS analyses. ... While the first test included dispersant, collector, and frother, the second test contained only dispersant and frother. The ...
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A green flotation collector towards efficient separation of
The flotation experiments show that PBAHX has a superior recovery ratio for chalcopyrite (91.89%), but a poor flotation performance on pyrite (34.62%) at a collector concentration of 2 × 10 −4 mol/L and pH 9.0. Further, E-nose detection demonstrates that PBAHX has a lower odor intensity than SIBX, which is attributed to the chaotic ...
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1 Froth Flotation – Fundamental Principles
no flotation can occur. Contact between particles and bubbles can be accomplished in a flotation cell such as the one shown schematically in Figure 5. Figure 5: Simplified schematic of a conventional flotation cell. The rotor draws slurry through the stator and expels it to the sides, creating a suction that draws air down the shaft of the stator.
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Flotation separation of pyrite and chalcopyrite with …
The separation of chalcopyrite and pyite is not fully solved, and thus more efficient depressants are still needed in industry. This paper used potassium permanganate (KMnO 4) as a pyrite depressant to separate pyrite from chalcopyrite.Flotation and contact angle results indicated that pyrite could be depressed by KMnO 4 at pH 7, while KMnO 4-treated …
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Selective depression of talc in chalcopyrite flotation by xanthan gum
This study aims to introduce xanthan gum as a favorable selective depressant for talc depression in sulfide copper flotation. As chalcopyrite is a crucial industrial mineral and a vital constituent of high-quality copper mines [15], it was chosen to be on behalf of sulfide copper minerals.Micro-flotation experiments on single minerals as well as artificial mixtures and real …
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High-turbulence fine particle flotation cell optimization and
This study employs computational fluid dynamics (CFD) simulation and hydrodynamic testing to investigate the flow field within a high-turbulence microfine particle flotation machine equipped with ...
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A Study of Temperature Effect on the Xanthate's …
Performance during Chalcopyrite Flotation Dongbo An and Jinhong Zhang * ... The ground samples were then screened by a RX-29 Ro-Tap test sieve shaker with Tyler series sieves. For lab-scale ...
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Effect of Grinding Media on Grinding-Flotation …
Flotation results, as well-scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet spectrophotometer, and zeta potential measurement results indicate that nano-ceramic ball grinding is …
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Effects of Xanthate on Flotation Kinetics of Chalcopyrite …
The flotation test results showed that chalcopyrite can be selectively separated from talc with 20 mg/L pullulan as a depressant, and that the separation effect remains unaffected when the ...
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Recover Ultrafine Chalcopyrite by Flotation
Consequently, all the chalcopyrite left in the flotation test tailings was considered hydrophilic. Conventional Laboratory Flotation. The conventional laboratory flotation tests were designed to simulate most of the characteristics of the commercial flotation process. After conditioning, the ground ore slurry was diluted with clear saturated ...
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Collectorless flotation of chalcopyrite and sphalerite ores …
The flotation of chalcopyrite and sphalerite from copper and copper-zinc ores has been achieved without using thiol-type collectors. Typically, a sulfide ore sample is first treated with sodium sulfide either during grinding or during the preflotation conditioning period, and then the chalcopyrite is floated with frother alone. ... In test TA-9 ...
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Selective Adsorption Mechanism of Ferric Ions on the …
Micro-flotation Tests The Influence of pH on Mineral Flotation. For sulfide ore flotation, the pH of the pulp is very important for flotation recovery. 11,29 Figure 2 demonstrates the flotation recovery of chalcopyrite and pyrite, with or without treatment by ferric ions, when the pH changes. When no iron ions are added, the recovery of chalcopyrite is high at pH …
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Polymers with Biobased Hydrophobic Cardanyl Acrylate and …
The effective separation of chalcopyrite, an extensively utilized copper mineral, presents a considerable hurdle for the mineral processing sector due to its geological …
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