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effect of ph on copper flotation

  • Effect of alkalinity of a pulp on selective flotation of .

    Effect of alkalinity of a pulp on selective flotation of .

    We study the effect of one of the main parameters of flotation ore-dressing, specifically, alkalinity of the pulp, on the selective flotation of sulfide and oxide minerals of copper from the Udokan deposition ores (Chita oblast). It is found that the optimum values are pH = 9 for sulfide minerals of copper and pH = 10 for the oxide ones. A supply of lime at the stage of pounding and sodium .

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  • Effect of Copper and Iron Ions on the Sulphidizing .

    Effect of Copper and Iron Ions on the Sulphidizing .

    In order to study the influence of S 2−, Cu 2+, and Fe 3+ ions on the flotation of copper oxide, the flotation experiments with various pH values and different amount of Na 2 S, CuSO 4, and FeCl 3 were conducted. The results of copper oxide flotation are shown in Figure 3. The recovery of CuO under different pH conditions is shown in Figure 3(a).

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  • Effect of Desliming on Flotation Response of Kansanshi .

    Effect of Desliming on Flotation Response of Kansanshi .

    The Kansanshi mixed copper sulfide-oxide ore contains significant proportions of fine material manifesting in a variety of processing challenges. This paper presents the work which was carried out to evaluate the efficacy of desliming in improving the flotation response of the ore. Two modes of desliming were investigated, namely; sieving and elutriation after which the deslimed material was .

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  • The effect of underground mine water on performance of the .

    The effect of underground mine water on performance of the .

    The nature of the effect of the underground water at Mufulira, particularly the sensitivity of the flotation to the pH at which the milling was conducted, characterized galvanic interaction. A large-scale plant situation is presented in which the desired electro-chemical response in the flotation was achieved, by a deliberate manipulation of .

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  • THE EFFECT OF SULPHITE ON THE XANTHATE-INDUCED .

    THE EFFECT OF SULPHITE ON THE XANTHATE-INDUCED .

    effect of air on the xanthate-induced flotation of copper-activated pyrite either in the presence or absence of sodium bisulphite (at pH 7). In this case, the xanthate-induced flotation of copper-activated pyrite in an air atmosphere was lower compared to the same experiment with nitrogen purging. Recovery of pyrite was 71.8% in nitrogen and

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  • The Effect of Sulfurization Process on Flotation of Copper .

    The Effect of Sulfurization Process on Flotation of Copper .

    In this study, experiments were carried out on copper ore containing gold and silver obtained from Kisecik village of Hatay, which is in the south of Turkey. Analyses of original ore showed that the sample contained 4.93 % Cu, 0.007 % Co, 0.92 % Zn, 11.41 % Fe, 10.72, % S, 4.72 g/t Au and 12.80 g/t Ag. It was determined that gold and silver could not be reached with satisfactory yields by .

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  • pH effects on the electrochemical reduction of CO (2 .

    pH effects on the electrochemical reduction of CO (2 .

    Wang, L. et al. Electrochemical carbon monoxide reduction on polycrystalline copper: Effects of potential, pressure, and pH on selectivity toward multicarbon and oxygenated products. ACS Catal. 8 .

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  • A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF .

    A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF .

    Figure 14: Collectorless flotation of pyrite in the presence of Cu2+ ions (pH 9.2, flotation time - 5 min). [15]. ... 28 Figure 15: Effect of atmosphere (grinding, flotation) on chalcopyrite floatability after grinding

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  • 1 Froth Flotation – Fundamental Principles

    1 Froth Flotation – Fundamental Principles

    will produce compensating effects in other areas (Klimpel, 1995) Froth flotation is a good example of an engineering "system", in that the various important parameters are highly inter-related, as shown in Figure 1. It is therefore important to take all of Chemistry Components Collectors Frothers Activators Depressants pH

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  • The Effect of Sulfurization Process on Flotation of Copper .

    The Effect of Sulfurization Process on Flotation of Copper .

    The Effect of Sulfurization Process on Flotation of Copper Ore Containing Gold and Silver . Figure 1: The effect of pH on the flotation yield As seen in Figure 1, the best of flotation yield was at pH 11.0. Vol.7, No.3 The Effect of Sulfurization Process 197 .

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  • AN INVESTIGATION OF COPPER RECOVERY FROM A .

    AN INVESTIGATION OF COPPER RECOVERY FROM A .

    The flotation of a natural porphyry copper ore with bornite and malachite was investigated via fundamental work with pure minerals and a bench-scale testing regime. The . Figure 2.8- pH effect on the activation of chrysocolla and subsequent recovery with sodium

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  • Effect of pH on the Recovery and Grade of Base Metal .

    Effect of pH on the Recovery and Grade of Base Metal .

    Abstract—This study investigated the effect of pH on the recovery and grade of the Platinum Group Metals (PGMs) and base metal sulphides from the UG2 ore of the bushveld complex. This was achieved through running a series of test work in a Denver flotation cell at varying pH 6-11 at constant reagent dosage. The UG-2 reef is characterized by two

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  • Copper-Cobalt ores

    Copper-Cobalt ores

    Copper is separated from the cobalt in the bulk concentrate by raising the pH up to at least 11 which depresses the cobalt minerals. Cobalt depression can be enhanced by small cyanide dosages. If the cobalt is found with chalcopyrite, bulk flotation can be carried out with xanthate at pH 10, and separation made at pH 4 with an amine and .

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  • The impact of water quality on flotation performance

    The impact of water quality on flotation performance

    The impact of water quality on flotation performance pH, Eh, DO and dissolved species in recycle water streams (e.g. thickener overflow, decant (tailings) dam return) contributing to a circuit water are also shown in Table I. TDS and TOC levels may also be raised by reagent addition for pH control (e.g. lime) and recycled organics (e.g .

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  • Chlorides on Chalcopyrite Flotation - MDPI

    Chlorides on Chalcopyrite Flotation - MDPI

    Figure 1. The effects of (a) frother and (b) collector on chalcopyrite recovery. 3.2. Effects of Salts Figure 2 shows the effects of typical soluble chloride salts on chalcopyrite flotation. As the pulp was adjusted to pH 10 using NaOH, approximately 10º4 M Na+ was added to the slurry, which was present as a background Na + concentration.

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  • Effect of pH, concentration and temperature on copper and .

    Effect of pH, concentration and temperature on copper and .

    Understanding the effect of temperature on the speciation of multivalent metals in solution is essential for many applications in industry. The results of the present Cu(II) and Zn(II) solutions speciation studies in tandem with thermodynamic calculations have shown that Cu2+ or Zn2+ ions proliferate in acidic solutions whilst in alkaline medium, solid Cu(OH)2 or Zn(OH)2 colloidal particles form.

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  • Effect of pH on pulp potential and sulphide mineral flotation

    Effect of pH on pulp potential and sulphide mineral flotation

    High pH values, which is a good way to depress pyrite and therefore to favour the flotation of copper and zinc sulphides, do not have the same effect on seafloor ore.

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  • Analysis of the Effects of Grind Size on Production of .

    Analysis of the Effects of Grind Size on Production of .

    complex mixture of copper sulphide and small amount of copper oxide minerals. However, a number of flotation parameters have not been optimized to meet concentrate standards and grind size is one of the parameter. The purpose of this research project was to analyze the effect of grind size on concentrate production at a mining company in Zambia

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  • Effect of pH on Flotation | Ph | Redox - Scribd

    Effect of pH on Flotation | Ph | Redox - Scribd

    Effect of pH on Flotation - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Paper looks at effect of pH on flotation of different sulphide minerals

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  • Concentrator Process Development Phase IV Flotation Bench .

    Concentrator Process Development Phase IV Flotation Bench .

    Figure 16: Effect of pH and Aero 5100 Promoter Dosage on Flotation Kinetics for Alternative Reagent . required for definitive design of a copper flotation circuit proposed for the Rambler copper - gold property located near Baie Verte, Newfoundland and Labrador. The .

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  • Minerals Engineering Conferences - Flotation '19

    Minerals Engineering Conferences - Flotation '19

    The reduction the negative effects of aluminosilicate minerals on copper and gold flotation by a new process route W.J. Rodrigues, W. Silva, V. Rhodes, P. Gonzaga, L. Mahlangu and S. Engelbrecht (Clariant Southern Africa (Pty) Ltd, South Africa) A comparison of native starch, oxidized starch and CMC as copper-activated pyrite depressants

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  • Improving Flotation of Sphalerite - Effect of pH and .

    Improving Flotation of Sphalerite - Effect of pH and .

    The pH was monitored as the flotation pH. 3. The water-mineral mixture was then transferred into the microflotation cell, and floated with N 2 at an average flow rate of 25 cm 3 for 20 seconds. The final pH was measured to ensure that no appreciable change had occurred during flotation. 6.4. Results and Discussion 6.4.a. Effect of pH on the .

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  • Dissolved-Air Flotation of Metal Ions

    Dissolved-Air Flotation of Metal Ions

    PH FIG. 1. Effect of sodium sulfide and pH on the removal of copper ions by dissolved-air precipitate flotation. [Cu2+ 1: 50 rng/L. Sodium sulfide expressed as percentage equivalent to copper. Dissolvcd-air flotation recycle 10%.

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  • Effect of Flotation Reagents for Upgrading and Recovery .

    Effect of Flotation Reagents for Upgrading and Recovery .

    Effect of Flotation Reagents for Upgrading and Recovery of Cu and Mo from Mine Tailing by Flotation Vol. 58, No. 1(2011) 15 However, the materials also pose other chal-lenges such as surface changes during exposure to environment, fines, poor liberation and so on that will affect flotation c onditions, including collector/

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  • pH effects on the electrochemical reduction of CO (2 .

    pH effects on the electrochemical reduction of CO (2 .

    Wang, L. et al. Electrochemical carbon monoxide reduction on polycrystalline copper: Effects of potential, pressure, and pH on selectivity toward multicarbon and oxygenated products. ACS Catal. 8 .

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  • Effect of pH on Copper Flotation Recovery VS Mass Pull

    Effect of pH on Copper Flotation Recovery VS Mass Pull

    An example of testing the effect of pH on rougher flotation on pit samples and the results are presented. Since this is only an example, it needs reminding that not all ores will respond the same. Here, rougher flotation is most Selective at a pH of 9.5 as pH levels in the 9 to 10 range yielded 1% to 2% better recoveries. Mineralogy data also supports this and shows between 3% and 10% of the .

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  • Water Quality in PGM Ore Flotation: The effect of Ionic .

    Water Quality in PGM Ore Flotation: The effect of Ionic .

    This study investigates the interactive effect of plant water ionic strength and pH in the flotation of a sulphidic PGM bearing ore. Results suggest that water quality variations may have effects at both the air-water interface as well as the mineral air interface. Key words Froth stability, Ionic strength, pH, Water quality, Water recovery

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  • A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF .

    A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF .

    Figure 14: Collectorless flotation of pyrite in the presence of Cu2+ ions (pH 9.2, flotation time - 5 min). [15]. ... 28 Figure 15: Effect of atmosphere (grinding, flotation) on chalcopyrite floatability after grinding

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  • Depressing effect of flocculants on molybdenite flotation

    Depressing effect of flocculants on molybdenite flotation

    The quality of recycled process water is an important issue in the flotation of Cu–Mo ores. Processing of Cu–Mo ores includes two steps: a bulk flotation where molybdenite is recovered together with Cu sulfides, and a subsequent selective flotation

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  • Low pH trial in the Ernest Henry Mining Copper Rougher .

    Low pH trial in the Ernest Henry Mining Copper Rougher .

    At high pH values (above 10.5), the forged media is passivated, so as the pH of the system drops the media corrosion rate increases and floods the system with the corrosion products, affecting flotation. As the high chrome media is much more inert, pH has less of an effect on copper flotation response.

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