• Kinetics of malachite leaching in alkaline glycine solutions

    leaching of copper oxides containing malachite in ammonia/ammonium carbonate are the interface transfer and diffusion across the product layer with an activation energy of 15 kJ/mol. Copper dissolution from a malachite ore in ammonium nitrate solutions was reported by Ekmekyapar et al. (2012)tobea mixed kinetic model, including both surface ...

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  • In situ leach Wikipedia

    Insitu leaching (ISL), also called insitu recovery (ISR) or solution mining, is a mining process used to recover minerals such as copper and uranium through boreholes drilled into a deposit, in situ leach works by artificially dissolving minerals occurring naturally in a solid state. For recovery of material occurring naturally in solution, see: Brine mining.

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  • Management of a copper smelter dust for copper profitability

    Probably, ammonium carbonate fulfils most if not all of the above requirements. The results derived from leaching experiments, using ammonium carbonate solutions and various experimental variables, on the copper flue dust are summarized in Table 2. From this series of experiments it can be deduced that under the various experimental

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  • Ammonia/nitric Acid Leaching of Copper Cobalt Oxidized Ore

    malachite in ammonia ammonium carbonate l– eaching” Hydrometallurgy, vol. 76, issue 12, 2005,pp. 5562 [8] Chang chinJung and Liu, “Feasibility of copper leaching from an

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  • NIOSHTIC2 Publications Search 10010780 Leaching ...

    Experiments on ammonium carbonate leachng of native copper ores crushed to 1inch size showed that in 30 days 55 percent of the copper was extracted from percent copper conglomeratetype ore, and 85 percent was extracted from percent copper amygdaloidtype ore.

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  • (PDF) Ammonia Leaching: A New Approach of Copper Industry ...

    The results of experiments on the pressure leaching of the initial copper concentrate in an ammonium/ammoniumcarbonate solution with oxygen as an oxidizing agent are …

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  • Leaching kinetics of lowgrade copper ore containing ...

    Leaching kinetics of lowgrade copper ore containing calciummagnesium carbonate in ammoniaammonium sulfate solution with persulfate LIU Zhixiong1, 2, YIN Zhoulan 1, HU Huiping1, CHEN Qiyuan1 1. School of Chemistry and Chemical Engineering, Central …

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  • Improved cupric ammonium carbonate leaching of copper ...

    Additional Physical Format: Online version: Staker, (W. Lyman). Improved cupric ammonium carbonate leaching of copper scrap. [Washington, ] : Dept. of ...

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  • scheme ammoniacal carbonate leaching copper

    ammonia/nitric acid leaching of copper cobalt semantic scholar. leached in ammonia/nitric acid solution at room temperature. the effects of time ammonia acid was considered as catalytic element to enhance copper leaching kinetic. ammonium carbonate solution at room temperature and reached an.

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  • The leaching of metal sulfides in ammoniacal carbonate ...

    The leaching kinetic data for cobalt from monometallic cobalt sulfide, showed that the process follows the surface reaction model similar to copper, with a steady activation energy of kJ/mol. In contrast to nickel, the leaching of cobalt from cobalt sulfide had a higher order with respect to ammonium carbonate of than with respect to ...

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