The results showed that about 90% copper recovery with 10% copper grade could be achieved by using a 1.5 kg/t oleic acid collector at pH = 10, 7 dm 3 /min air flow rate and 5 min flotation time. The …Web
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Predicting Flotation Recovery. Unfortunately, many milling engineers rely rather heavily on percent recovery as a strict measure of a concentrator's relative performance. The fallacy of this reasoning is not …Web
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Figures 9 and 10 show clearly that there was a marked increase in the overall recovery of copper after the tailings of the 1 st stage flotation were milled to 90% passing 45 microns and floated. In the case of conventer and mixed slag, increases of over 10% in the recovery were recorded when both FC4146 and FC7245 were used as secondary ...Web
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A new method, staged flotation for effectively increasing the recovery of ultra-fine copper oxide ore with a new type of collector (ZH-1, C3-5 carbon chain xanthate) is proposed for the first time. The flotation process and mechanism were examined by flotation tests, entrainment rate analysis, laser particle size experiments and …Web
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A maximum recovery of copper was 88,58% while the grade was 2,88 with 32,29 copper oxide on the total massive copper under the flotation conditions: 1,15 pulp density, 10 g/t dosage collector, 10 g/t dosage frother, and 50 g/t dosage dispersant and the maximum grade 12,24 while the recovery was 47,02% under the flotation conditions: …Web
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Furthermore, flotation experiments on chalcopyrite and galena ore from Black Mountain ore revealed that increasing oxygen level in pulp enhances copper recovery significantly [43,44]. In terms of temperature, Lin [ 45 ] found out that annual low temperatures (12 °C) had a negative impact on the floatability of a flotation process as …Web
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Ion flotation is an efficient separation technique for the recovery of metal ions from dilute aqueous solutions. Provided that both the collected metal and the surfactant are recovered from the foam phase, it could be considered as an alternative to ion exchange, adsorption or solvent extraction in hydrometallurgy. However, most studies …Web
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18 rowsThis means that 4.3% of the copper present in the ore was lost in the tailings. (d) The % Weight ...Web
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Misreported copper into tailing dramatically declines copper recovery. This study aims to find the possible reasons of copper loss to tailing and present the methods to improve the performance of ...Web
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Chen et al. (2017) reported the decrease in copper flotation recovery from 95 to 63.6% with an increase in pulp viscosity from 0.109 to 0.147 Pa s in the presence of 30 and 50 vol.% of amorphous silica (in amorphous silica and quartz suspension), respectively. In flotation, pH control is a vital method to control selective mineral separation. ...Web
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this paper explains in what way the operating plant material balance in froth flotation can be used for a metallurgical performance analysis purpose. Total copper and copper sulfide recoveries vs ...Web
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Solutions containing copper ions are produced at copper mines due to its dissolution from ores and dumps. It is important to recover these ions to prevent this toxic element from entering the environment and because it could be economical. We investigated the use of ion flotation for extracting Cu ions from diluted mine water from …Web
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The average grade of copper in the flotation concentrate was 25.42% Cu at a recovery of 75.8%. These days attempts are being made to replace chemical reagents with bio-based products. The microbial flotation process involves the application of microbes and microbial metabolites as alternatives to commercial reagents [ 30, 51, 83 ].Web
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In this study, a facile process for recovering copper from copper slags through flotation enhanced by sodium carbonate synergistic mechanical activation has …Web
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Rate parameters obtained in laboratory study To investigate the effect of feed fines on the flotation performance, two different samples (d80= +312 µm and d80= -312 µm) were prepared and used in laboratory flotation …Web
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This reagent was developed especially for the flotation of oxidized copper ores. The amount of these promoters varies considerably. If the ore is partly oxidized, it may be necessary to use as much as 0.30 …Web
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Research works done have shown that recovery is optimum at particle sizes ranging from 15 to 150 µm, evident in the recovery to particle size plots. The effect of particle size on flotation ...Web
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Figure 21 presents a comparison between copper recoveries obtained in flotation tests of the bulk samples and copper recovery calculated by weighing the mass distribution in each size fraction and the respective copper recovery. It is possible to observe that copper recovery of the flotation test with the bulk sample was …Web
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mental results from single-stage batch flotation of the Morenci copper/molybdenum concentrate are presented in Fig. 1, which describes the effect of ozone conditioning time on flotation recovery and concentrate grade. Chalcocite is quickly depressed upon contact with ozone, as is evident by the significant drop in copper recovery during theWeb
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The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit …Web
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Misreported copper into tailing dramatically declines copper recovery. This study aims to find the possible reasons of copper loss to tailing and present the methods to improve …Web
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For all three metals, significant ion recovery is observed with surfactin flotation, with 75% of Cu 2+, 95% of Ni 2+, and 98% of Co 2+ recovered into the overflow after 50 min of flotation, concentrating the ions up to 225 M (mu), 267 M (mu), and 259 M (mu) respectively. This compares well to other surfactants reported in the ...Web
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Prediction of metallurgical responses during the flotation process is extremely vital to increase the process efficiency using a proper modeling approach. In this study, two new variants of the recurrent neural network (RNN) method were used to predict the copper ore flotation indices, i.e., grade and recovery within different operating …Web
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A brief statistical analysis has shown that froth flotation is a reliable process to recover copper from flotation tailings. • Collector dosage remains the main parameter …Web
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Bulut G (2006) Recovery of copper and cobalt from ancient slag. Waste Manag Res 24(2):118–124. Article Google Scholar Bulut G, Perek KT, Gül A, Arslan F, Önal G (2007) Recovery of metal values from copper slags by flotation and roasting with pyrite. Min Metall Explor 24(1):13–18. Google ScholarWeb
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The predictive flotation models for blended ores in this paper will focus on copper content and recovery using four types of complex copper–gold ores of Madneuli mines. 1.1 . Geometallurgical modelsWeb
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After lead flotation at optimum pH 8, the flotation of zinc at a different pH (5–11.5), with two collector types, was performed to study the recovery and grade of zinc in the zinc concentrate. Figure 8 shows the grade and recovery of zinc in the zinc concentrate using PAX or Aero 3477 collectors at pH 5–11.5.Web
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With the industrial depletion of high-grade copper sulfide resources increasing, the recovery and utilization of copper oxide ore have gradually become a substitute for copper resources [1,2].Froth flotation is an economic separation technique which has been widely used in the copper mining industry to recover copper minerals from gangue …Web
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The flotation results show that the recovery of copper and molybdenum decreased with the increasing copper oxidization degree. In addition, the recovery of blended ore can be predicted via the flotation rate equation, using the maximum recovery (Rmax) and flotation rate coefficient (k) determined from the flotation rate analysis of …Web
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Many copper flotation plants around the world, and particularly those in the Americas, have enough gold in the ore to ensure that special attention is given to maximize the recovery of gold into the copper concentrate. There has been a significant increase in the availability of selective flotation collectors for gold, and these are now widely ...Web
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As ore grades constantly decline, more copper tailings, which still contain a considerable amount of unrecovered copper, are expected to be produced as a byproduct of froth flotation. This research reveals the occurrence mechanism of copper minerals in typical copper sulfide tailings using quantitative mineral liberation analysis (MLA) …Web
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A considerable improvement in copper recovery performance was measured using the HydroFloatTM cell on Sample 3. An additional 24 percent of the copper contained in the >212µm fractions ... techniques in a flowsheet to treat a copper sulphide ore by flotation could significantly increase the recovery of coarse copper sulphide bearing particles ...Web
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The capacity of the flotation system is 33,000 t/d. The ore grade fed to the third plant is 0.25–0.45%. The copper recovery of flotation plants is higher than 90% with particle size of P80–200 mesh. Table 5 shows the composition of concentrates.Web
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In copper recovery from such low-grade sulphide ores, it is customary to use hydrometallurgical processes (leaching, solvent extraction and electrowinning) or beneficiation is performed by froth flotation (including crushing, grinding, flotation, thickening and drying of the concentrate), which is followed by pyrometallurgical …Web
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The total copper recovered from its ore through flotation process is about 56% [ 6, 18 ], which indicates that the flotation tailings still contain valuable copper components such as chalcopyrite. In addition, old flotation tailings sometimes have a …Web
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Based on the experimental results, a conceptual closed-loop flow sheet is proposed for the recovery of copper from dilute ammoniacal leachates by ion flotation. …Web
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Abstract Sulfide copper mineral, typically Chalcopyrite (CuFeS 2), is one of the most common minerals for producing metallic copper via the pyrometallurgical …Web
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Chen et al. (2019) investigated the recovery of iron and copper from CSS containing 1.91% copper and 38.79% iron by flotation - deep reduction - magnetic separation process. The results show that copper in CSS mainly existed in the form of elemental copper and sulfide, while iron phase mainly existed in the form of iron olivine …Web
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