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malachite recovery in copper extraction flotation

With increasing pH copper recovery is increased and at 12.5% pH, maximum recovery (up to 90%) has been achieved. The optimum parameters for the copper extraction from malachite ore of the Shigar valley are the pH 12.5%, 50-micron particle size and grinding time of 25 minutes. Keywords: Flotation, optimum parameters, recovery, malachite ore, copper

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  • Processing of Malachite from the Shigar Region of Gilgit

    Processing of Malachite from the Shigar Region of Gilgit

    Sep 25, 2020 In this study, optimal operation parameters for the extraction of copper (Cu) from malachite ore of the Shigar region of Gilgit-Baltistan were identified. The effects of some operational parameters on Cu recovery has been identified. The pulp density (25%) and other parameters are kept constant throughout the process. Crushing and grinding were carried out

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  • Investigation into the flotation of malachite, calcite and

    Investigation into the flotation of malachite, calcite and

    Nov 01, 2019 Fig. 2 shows the flotation response of malachite, calcite and quartz to pH with 1 10 −5 mol/L DEHPA, DBP or TBP. The results of Fig. 2 (a) indicate that in the presence of 1 10 −5 mol/L DEHPA, the flotation recovery of malachite was over 90% in the pH range of 6–11, while quartz recovery was less than 25%. As for the calcite, a relatively low flotation recovery

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  • AN INVESTIGATION OF COPPER RECOVERY FROM A

    AN INVESTIGATION OF COPPER RECOVERY FROM A

    The copper recovery, malachite recovery, minor copper recovery and copper grade responses were optimized using JMP statistical software. Indicators of model inadequacies were noted but since the models predicted ... Figure 4.10 : The relationship between the flotation recovery of pure malachite and bornite with

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  • Leaching of Copper from Malachite with Methane-sulfonic

    Leaching of Copper from Malachite with Methane-sulfonic

    The results show that the optimum leaching conditions for malachite ore with a copper extraction more than 96.8% are ammonia/ammonium concentration 3.0 mol/L NH4OH + 1.5 mol/L (NH4)2SO4, liquid-to

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  • Sulfidization flotation performance of malachite in the

    Sulfidization flotation performance of malachite in the

    Mar 01, 2019 Micro-flotation tests were performed in order to investigate the flotation performance of malachite and calcite. Fig. 1 shows the flotation recovery of two minerals in the absence and presence of sodium sulphide when SBX was used as collector. As shown in Fig. 1, in the absence of Na 2 S, the floatability of malachite and calcite using the SBX collector is

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  • RECOVERY OF COPPER FROM OXIDE COPPER ORE BY

    RECOVERY OF COPPER FROM OXIDE COPPER ORE BY

    RECOVERY OF COPPER FROM OXIDE COPPER ORE BY FLOTATION AND ... obtained with only 26.98% copper recovery. Unsuccessful flotation of the test ... acid concentration, and pulp density on extraction of copper were examined. Agitating . vi leaching test results were indicated that approximately 90% of copper extraction was possible. Three hours of

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  • (PDF) A Review of the Flotation of Copper Minerals

    (PDF) A Review of the Flotation of Copper Minerals

    The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground mines) is of

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  • Review, Evolution and Optimization of the Kansanshi

    Review, Evolution and Optimization of the Kansanshi

    sulphides, malachite and oxidized native copper in the cleaning section. The main copper losses in the final tails, attributed to liberated chalcopyrite and malachite that should be recovered, if properly sulphidised, represented 16% and 28%, respectively

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  • SOME ASPECTS OF LABORATORY FLOTATION OF Co-Cu

    SOME ASPECTS OF LABORATORY FLOTATION OF Co-Cu

    laboratory flotation on an individual basis in order to arrive at an acceptable flotation technique Laboratory flotation testwork was carried out on three different samples from the DRC in attempts to isolate some of the more important variables affecting the flotation of copper and cobalt oxide minerals from these weathered deposits

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  • Enhanced sulfidation xanthate flotation of malachite using

    Enhanced sulfidation xanthate flotation of malachite using

    May 18, 2017 The flotation recovery of malachite increased from 78.28% to 90.86% when the ammonium sulfate concentration was increased from 5

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  • Minerals | Free Full-Text | Copper Extraction from Oxide

    Minerals | Free Full-Text | Copper Extraction from Oxide

    In this investigation, a laboratory-scale study to extract copper (Cu) from its oxide ore (0.425–11.2 mm particle size) was conducted using varied sulfuric acid (H2SO4) concentrations (0.05–0.5 M) as a lixiviant. Through a physicochemical and mineralogical analysis of real field ore samples from the Almalyk mine heap site (Tashkent, Uzbekistan), malachite was identified as

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  • Flotation of oxide copper ore with sodium oleate from

    Flotation of oxide copper ore with sodium oleate from

    constituents. Oxide copper ore flotation with 800 g/ton sodium oleate at pH 9 yielded 14.4% Cu with 83.3% recovery in a rougher circuit. To enhance the flotation performance, in terms of %Cu, optimum dosages of sodium silicate, quebracho, and pine oil were examined. At the optimum dosages, the grade increased to 20.1% Cu with 76.4% recovery

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  • A Multistage Sulphidisation Flotation Procedure for a Low

    A Multistage Sulphidisation Flotation Procedure for a Low

    Authors: Tebogo P. Phetla, Edison Muzenda Abstract: This study was carried out to develop a flotation procedure for an oxide copper ore from a Region in Central Africa for producing an 18% copper concentrate for downstream processing at maximum recovery from a 4% copper

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  • Processing of Malachite from the Shigar Region of

    Processing of Malachite from the Shigar Region of

    Sep 25, 2020 With increasing pH copper recovery is increased and at 12.5% pH, maximum recovery (up to 90%) has been achieved. The optimum parameters for the copper extraction from malachite ore of the Shigar valley are the pH 12.5%, 50-micron particle size and grinding time of 25 minutes

    Get Price
  • c Processing of Malachite from the Shigar Region

    c Processing of Malachite from the Shigar Region

    malachite ore is improved. The optimal flotation for malachite ore has been achieved with a pH range of 10-12.5. The increasing pH (using lime) has no such effect on copper as a depressant. However, for sulfide minerals, the increasing pH value decreased the concentration of copper. Fig. 6 Recovery of copper as a function pH

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  • A novel decyl-salicyl hydroxamic acid flotation collector

    A novel decyl-salicyl hydroxamic acid flotation collector

    Sep 01, 2020 When the pH of pulp is larger than 9, the recovery of malachite decreases insignificantly until reaching a pH of approximately 11. At a pH of 9, 96% of the malachite is recovered. The effect of the collector dosage on the flotation recovery of malachite under a pH of 9 is shown in Fig. 1(b). This demonstrates that the flotation recovery increases rapidly at

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  • RECOVERY OF COPPER FROM OXIDE COPPER ORE

    RECOVERY OF COPPER FROM OXIDE COPPER ORE

    Results of flotation tests were unsuccessful in terms of both recovery and grade of concentrate product. The highest copper recovery of concentrate was found as 61.35% with 8.69% copper content. The concentrate with highest copper grade of 34.65% was obtained with only 26.98% copper recovery

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  • Malachite flotation - Froth Flotation (Sulphide & Oxide

    Malachite flotation - Froth Flotation (Sulphide & Oxide

    Malachite doesn't float easily simply because of the lack of sulfide in the mineral structure. We looked at a project in Northern Chile years ago which was a malachite-silver project. Heap leaching with acid wasn't viable because of the high acid consumption due to the carbonates and hydroxides, and heap leaching with acid wouldn't recover the

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  • (PDF) The role of pulp potential and the sulphidization

    (PDF) The role of pulp potential and the sulphidization

    Obtaining high recovery in copper flotation plants has been always under investigation in recent years. ... flotation recovery of malachite. ... on the rate and extend of extraction of copper

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  • Review, Evolution and Optimization of the

    Review, Evolution and Optimization of the

    Malachite recovery only started to show up significantly in the second sulphidising stage (CPS 2). Additionally, the coarse fraction sulphides were seen to be activated and recovered at this stage. However, only 50% of the liberated malachite was recovered. Malachite associated with iron oxides and hydroxides is not recovered

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  • AN INVESTIGATION OF COPPER RECOVERY FROM

    AN INVESTIGATION OF COPPER RECOVERY FROM

    The copper recovery, malachite recovery, minor copper recovery and copper grade responses were optimized using JMP statistical software. Indicators of model inadequacies were noted but since the models predicted ... Figure 4.10 : The relationship between the flotation recovery of pure malachite and bornite with

    Get Price

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