• Application of LIX 84 for Separation of Copper, Nickel and ...

    The ammoniacal leaching ... copper and their selective stripping were considered to explore the possibility of separating Cu, Ni and Co from ammonia- ammonium ...

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  • Selective dissolution of copper - Finishing

    September 7, 2010. You may want to try an ammonium carbonate leaching solution. This will dissolve the copper, but not the steel. It is a slow process, but it works.

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  • ammonium carbonate vs ammonium sulfate copper leaching ...

    US Patent # 4,165,264. Ammonia leaching – Patents.com … to form a leach liquor which contains ammonia complexes of copper sulfate and copper carbonate; …

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  • Dissolution kinetics of malachite in ammonia/ammonium ...

    A study performed by Oudenne and Olson (1983) on leaching kinetics of malachite in ammonium carbonate solution reveals that two stages of reaction are found.

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  • leaching of copper from tailings using ammonia ammonium ...

    Ammonia/nitric Acid Leaching of Copper- Cobalt Oxidized Ore acid/ammonia ratio on the leaching of rich copper ... Residue in Ammonia-Ammonium Carbonate ...

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  • Ammonia leaching - Phelps Dodge Corporation

    BACKGROUND OF THE INVENTION. This application relates to an improved process for leaching copper from a copper sulfide with an aqueous ammonium carbonate ...

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  • uranium processing :: Leaching | Encyclopedia Britannica

    Solvent extraction is not useful for recovery of uranium from carbonate leach liquors, ... aqueous ammonia. Uranium is usually precipitated as ammonium ... copper ...

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  • Leaching kinetics of low-grade copper ore containing calcium ...

    ... was investigated in ammonia-ammonium sulfate ... of copper in ammonia- ammonium sulfate solution with ... in ammonia/ammonium carbonate leaching ...

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  • Effect of copper to quat ratio on fixation and leaching of ...

    Abstract. This study investigates the effect of the relative proportion of copper oxide (CuO) to didecyl dimethyl ammonium carbonate (DDACb) in an alkaline copper ...

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  • Patent CA1088726A1 - Carbonate leaching of uranium - Google

    In the hydrometallurgical mining of uranium with ammonium carbonate leaching solution containing hydrogen peroxide as the oxidant for ... copper sulfides ...

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  • processing ammonia carbonate leaching copper ore

    Response surface methodology for optimization of copper leaching … Aug 2, 2011 … Thus, the direct leaching of copper from these ores or their primary products has ...

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  • ammonia acetic acid leaching in mineral processing

    Dissolution kinetics of malachite in ammonia/ammonium carbonate leaching, Hydrometallurgy, 76(2005 . and O. Laçin, ... Copper Leaching Process ...

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  • The Chemistry of Copper Heap Leaching - Regional Tectonic ...

    The Chemistry of Copper Heap Leaching . John Dreier November ... These and other carbonate minerals dissolve on contact with the leach solution producing cations, ...

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  • Studying on Leaching Process of African Copper Oxide Ore by ...

    Ammonium carbonate is used as leaching agent.The low grade African copper oxide ore is leached in ammonium carbonate solution decomposing to ammonia during heated.The ...

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  • Ammonia / ammonium carbonate leaching of malachite ores ...

    Ammonia / ammonium carbonate leaching of malachite ores ... At the ammonia leaching, copper is solubilized as amine complexes, iron is hydrolyzed to an insoluble

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  • Improved Cupric ammonium carbonate leaching of copper Scrap.

    Alternatives were developed to the conventional ammoniacal carbonate leaching-steam stripping procedure for recovering copper as an oxide from contaminated scrap ...

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  • An electrochemical investigation of the dissolution of copper ...

    An electrochemical investigation of the dissolution of copper, nickel, and copper-nickel alloys in ammonium carbonate solutions ... determined from the copper leaching

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  • Recycled copper wet beneficiation

    Copper or copper oxide waste, leaching with ammonium carbonate solution in the blast conditions, copper leaching solution purification pressurized hydrogen reduction ...

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  • copper leaching ammonium carbonate - DONNINA

    The effect of leaching time, ammonium hydroxide, and ammonium carbonate ... Keywords: Copper; Malachite; Ammonia; Ammonium carbonate; Leaching; ...

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  • Uranium value leaching with ammonium carbonate and/or ...

    ... with the solutions containing ammonium carbonate, ammonium nitrate and copper, ... carbonate and the like. Surface leaching of mined ore containing ...

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  • THE HYDROMETALLURGICAL EXTRACTION OF ZINC BY AMMONIUM ...

    The use of ammonium carbonate for the extraction of metals such as copper and nickel is well known. ... leaching, zinc;

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  • Ammoniacal extraction of copper from metallic materials ...

    ... preferably a solution of ammonium carbonate and ammonium hydroxide, to dissolve copper from the dross. The leaching will usually be carried out in a gas ...

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  • scheme ammoniacal carbonate leaching copper

    ... scheme ammoniacal carbonate leaching copper. ... Copper leached faster from Ammoniacal Ammonium Carbonate Leaching of Manganiferrous .

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  • Ammonia Leaching Study on Carbonate Oxidised Copper Ores in ...

    ... Ammonia Leaching Study on Carbonate Oxidised Copper Ores in Yunnan ... ammonium sulfateconcentration 2.5mol/L,grinding ... the copper leaching rate could reach ...

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  • Recovery of cupric oxide from copper-containing wastewater ...

    sludge by acid leaching and ammonia ... recovery of copper and removal of oil residue from copper ... ammonia/ammonium carbonate media were used to purify the ...

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  • COPPER(II) EXTRACTION FROM AMMONIA LEACH SOLUTION

    COPPER(II) EXTRACTION FROM AMMONIA LEACH SOLUTION ... Ammonia and its salts (carbonate or sulfate) are very effective and selective leaching agents.

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