Recover Ultrafine Chalcopyrite by Flotation
The ultrafine chalcopyrite from the nearly pure chalcopyrite specimen showed significant natural hydrophobicity as shown in figure 4. With no KAX, over three-quarters of the chalcopyrite floated. Virtually all of the 20- by 10-µm chalcopyrite was recovered in the flotation concentrate.
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The selective adsorption mechanism of calcium ions/pullulan …
Flotation is widely adopted to separate sulfide minerals from talc (Zhong et al., 2021, Farrokhpay et al., 2018, Witney and Yan, 1997).However, in the flotation …
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Toxicity of metal extraction and flotation chemicals to …
It is also significant to note that the chalcopyrite flotation concentrate used already contains some of the chemicals tested in the study. As mentioned earlier, the collector–mineral bond can be quite strong and results from a concentrator at Boliden Mineral AB, Sweden have indicated that the majority of added collector is attached to the ...
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The depression behavior and mechanism of tragacanth gum on chalcopyrite
The flotation concentrate yield was calculated as by the following formula (1). In the single mineral flotation test, the flotation concentrate recovery was equal to the yield. ... In contrast, as TG dosage increased, chalcopyrite flotation recovery decreased gradually and it was less than 20% when 100 mg/L TG was added. Therefore, TG was a ...
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Sequential Separation of Cobalt, Copper, and Nickel from …
Massive sulphide deposits normally show good flotation upgrades, whereas finely disseminated sulphides are much harder to concentrate to smelter grades or …
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Chalcopyrite (Cu) Sphalerite (Zn) Separation by …
The Problem with separating Copper from Zinc by flotation. ... The copper is present principally as chalcopyrite in extremely close association with both the sphalerite and pyrite. ... Final copper …
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Selective depression and adsorption of a novel eco-friendly …
Carrollite (CuCo 2 S 4), the most common cobalt-bearing mineral, often coexists with chalcopyrite and dolomite, and usually as a by-product in the flotation of copper sulfide minerals, then cobalt is extracted from copper-cobalt sulfide concentrate by subsequent metallurgical processes [7], [8]. However, in consideration of the grade of …
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A case study of flotation of chalcopyrite-molybdenite ore …
The addition of sodium sulfide in a bulk concentrate effectively depresses chalcopyrite flotation and allows the separation of chalcopyrite from molybdenite in ccp-mlb bulk concentrate. ... The results of ccp-mlb bulk separation were compared for traditional flotation (concentrate A, Fig. 6 (a)) and a new, instant flotation scheme …
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Flotation separation of chalcopyrite from pyrite and …
The results of flotation experiment illustrated that IBATC exhibited a stronger adsorption with chalcopyrite and could achieve to separate the chalcopyrite from the …
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Selective flotation separation of molybdenite and chalcopyrite …
As seen in the figure, the re-flotation recovery of the original chalcopyrite concentrate is as high as 98.5%, while that of the chalcopyrite concentrate after thermal treatment is only 3.79%. Noteworthy, the collector absorbed on the surface of chalcopyrite can be removed in the thermal pretreatment process due to the low boiling point of PBX ...
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Effect of deep oxidation of chalcopyrite on surface …
In the flotation of practice production, chalcopyrite surface oxidation reduced not only the grade of copper concentrate but also its value [26], [27], [28], [29].The purpose of this work was to determine the reason of the difficulty in collecting and low grade and recovery of chalcopyrite concentrate through the influence of deep oxidation on its …
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Enhancing flotation separation of chalcopyrite and …
Talc is a hydrophobic mineral with excellent natural floatability. It will enter the concentrate product along with the during the flotation process, affecting the concentrate grade 8 – 11. In the flotation process of Copper-Nickel Sulfide Ores, reducing the content of MgO in the concentrate is a technical goal of ore beneficiation.
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The flotation separation of molybdenite from chalcopyrite …
Based on these considerations, a PAM-ATU polymer with an average molecular weight of appropriately 1.66 × 10 4 g/mol was introduced as the chalcopyrite depressant in the flotation separation of molybdenite from chalcopyrite, including artificially mixed minerals and bulk Cu-Mo concentrate, in the present study. Its …
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Copper Recovery from Chalcopyrite Flotation Concentrate …
The present study used ultrasonic and microwave irradiation to investigate their mutational effects on mesophilic bacteria. The aim of this research was to …
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Pulsating HGMS for industrial separation of chalcopyrite from …
For instance, for the flotation separation of a ton of fine copper-molybdenum co-flotation concentrate to be used in this investigation, which assays around 26% Cu and 0.35% Mo with 90–92% mass below 50 μm, a sodium sulfide (Na 2 S) consumption of 20–30 kg was practically required for depression of chalcopyrite …
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Influence and mechanism of new environmentally friendly …
The flotation findings manifested that under weakly acidic conditions (pH=6.5±0.2), a high-quality copper concentrate with a copper recovery of 73.15 % and a grade of 28.06 % was obtained. CMCD exhibited superior inhibition of pyrite compared with other traditional inhibitors. ... while it had minimal impact on chalcopyrite flotation, ...
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Separation of Copper-Molybdenum Flotation Concentrate …
Separation of chalcopyrite from molybdenite is currently mainly carried out by flotation, but this process is costly because of the extensive use of inhibitors. This study briefly describes a 7.0T/100CGC low-temperature superconducting magnetic separator and discusses its separation principle as well as the effect of magnetic induction on …
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Effect of copper ions on the flotation separation of chalcopyrite …
The typical flotation process for this type of ore involves the bulk flotation in the first stage and the separation of molybdenite from Cu-Mo bulk concentrate in the second stage (Ansari and Pawlik, 2007). However, the residual collectors in the bulk concentrate and the similar floatability of chalcopyrite and molybdenite make the …
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(PDF) Investigation of Some Flotation Parameters …
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.
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Selective depression of talc in chalcopyrite flotation by xanthan gum
Micro-flotation results show that xanthan gum severely depresses talc flotation but barely affects chalcopyrite flotation at pH 8. In artificially mixed minerals flotation, a concentrate containing 31.87% Cu can be obtained at 90.03% Cu recovery from a feed of 16.94% Cu, indicating xanthan gum as a selective depressant.
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Copper Recovery from Chalcopyrite Flotation Concentrate …
Much effort has been expended to develop a hydrometallurgical process capable of treating chalcopyrite concentrate (Dimitrijevic et al. 2009; Abdollahy et al. 2011; Balfour-Cunningham et al. 2016).Biohydrometallurgy has been successfully implemented for oxidation of refractory gold ore and bioleaching of most secondary …
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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.
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Raman spectroscopic study of some chalcopyrite–xanthate flotation …
The comparison of these bands with the Raman spectrum of the flotation concentrate leads to the assumption that FeiPX 3 is one of the products present on the chalcopyrite surface. This is perhaps related to the modification of the mineral surface with Fe 3+ and its preferable interaction with the collector.
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Statistical Evaluation of Flotation Behavior of Chalcopyrite …
The chalcopyrite deposit in Malanjkhand, India, is the largest copper ore producer in the country. However, its flotation performance has room for improvement. This study used standard flotation experiments using a mechanical flotation cell using a conventional collecting reagent and a collector blend consisting of xanthate and ester. A …
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The Depression and Adsorption Mechanism of Polyglutamic Acid …
The addition of PGA produced a flotation concentrate with a chalcopyrite grade of more than 80%, with an improved recovery of more than 85%. Whereas, under the same experimental conditions the grade and recovery of pyrrhotite remained less than 20%. These results indicate that in the mineral suspension where both chalcopyrite and …
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A conceptual process for copper extraction from chalcopyrite …
Increasing temperature, pH, glycine concentration and DO concentration all increase the rate and extent of copper extraction. The extraction of copper from "as-received" chalcopyrite flotation concentrate, at a particle size of −45 μm, in solutions containing 0.4 M glycine at 60 °C with 25 ppm DO, was 40.1% after 24 h.
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Effect of pyrite content of feed and configuration of locked …
Content of chalcopyrite locked with silicate minerals (CP/G) is increased in plant feed and consequently in flotation concentrate with regard to increasing depth of mine pit in recent years. As seen in Fig. 14, by enhancing cell number, SiO 2 content ascends gradually showing that considerable amount of gangue minerals are …
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Effect of low dissolved oxygen on chalcopyrite-molybdenite …
However, for some special flotation separation systems, such as the flotation separation of copper–molybdenum mixed concentrate, due to the natural floatability of molybdenite is better than chalcopyrite, chalcopyrite inhibition is generally used in the flotation separation of copper–molybdenum mixed concentrate (Park et al., …
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Study on the selective separation mechanism of tannin acid …
Fig. S2 shows the XRD results of the rough flotation concentrate of the real ore, wherein the sample shows abundant talc, chalcopyrite, and pyrite. Therefore, this ore sample can be reasonably used for verifying the effect of TA on the separation of chalcopyrite and talc in the real ore.
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Flotation separation of chalcopyrite from talc using a new …
The mechanism of carrageenan in the flotation separation of chalcopyrite from talc when using collector sodium butyl xanthate (SBX) was investigated. Micro …
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Separation of molybdenite from chalcopyrite with thiolactic …
The selectivity index was calculated using the following equation: m b S m b(100 )(100 ) R J I R J â‹… = âˆ' âˆ' (1) where Rm is the molybdenite recovery in the flotation concentrate; and Jb is the chalcopyrite recovery in the tailing fraction.
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Evaluate the Depression of High-Concentration Pyrite in …
Figure 2b represents chalcopyrite flotation against pyrite. As the pyrite feed grade increased from 5% to 25%, chalcopyrite flotation against pyrite was improved when 30 wt% Cr steel was used as the grinding media, but this improvement was not enough to maintain a high Cu concentrate grade due to a reduced Cu recovery and …
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Effect of Grinding Media on Grinding-Flotation …
This study investigated the effects of nano-ceramic ball and steel ball grinding on chalcopyrite and pyrite flotation behavior, as well as the effects on the surface morphology of the ground products and …
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Enhancing flotation separation of chalcopyrite and …
Separation effects of sodium polyacrylate (PAAS) and gum Arabic (GA) on flotation of chalcopyrite and magnesium silicate minerals using potassium butyl …
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Challenges and opportunities in the recovery/rejection of …
In the flotation of copper–gold ores, the flowsheet is designed to produce a bulk flotation concentrate of chalcopyrite and gold. The concentrate is later smelted to obtain copper and gold separately. Most copper flotation plants, however, are optimised for copper recovery in terms of collector selection for surface hydrophobisation, under ...
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Flotation separation of molybdenite from chalcopyrite …
1. Introduction. It is well known that molybdenite is an important mineral source to extract molybdenum metal. It is usually associated with other sulphide minerals, such as pyrite, chalcopyrite, galena and sphalerite (Hirajima et al., 2017, Hirajima et al., 2014).Owing to the sharp increase in price of the molybdenum metal, the production of …
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Characterization and Flotation of Sulfur from …
flotation tailings and can be readily recovered by flotation with different flotation reagents. When amyl xanthate is used, 85% of chalcopyrite can be recovered with a copper grade of 14.5% in a single-stage froth flotation. The chalcopyrite flotation concentrate can be sent back to chloride leaching circuits.
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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
The study of Fairthorne et al. indicated that the flotation of chalcopyrite and pyrite at pH 7 increased with the concentration of O-isobutyl-Nethoxycarbonyl …
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Mechanism of Mechanical Entrainment in Chalcopyrite …
In flotation, the transport of the particles to the concentrate takes place mainly by two important mechanisms: attachment to the air bubble (true flotation) and …
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Relation of bubble size, grade and recovery in the copper flotation …
In the Madenköy copper plant, the ore was ground to below approximately 100 μm and rougher chalcopyrite concentrate was obtained by flotation. This concentrate was reground below 53 μm and the chalcopyrite was floated in cleaning circuits. 20 m 3 Outotec tank cells were used in the rougher circuit while 10 m 3 Outotec tank cells in …
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