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The dissolution behavior of metals from silver/copper alloys in ammoniacal solutions

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Abstract

The dissolution behavior of silver and copper from silver/copper alloys in ammoniacal solutions was investigated using a rotating disc. Oxygen was used as an oxidant. The effects of the alloy composition, concentration of lixiviants, stirring speed and temperature on the overall dissolution kinetics were studied. Three silver/copper alloys (containing 76.7, 46.9 and 24.1% silver) were used in this study. The rates of dissolution for these alloys were compared to that of pure silver and copper under the same testing conditions. Emphasis was given to the galvanic effect on the overall dissolution rates.

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Authors and Affiliations

  1. Department of Metallurgical Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA

    Y. Guan (member SME, postdoctoral fellow) & K. N. Han (head)

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  1. Y. Guan
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  2. K. N. Han
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Additional information

SME Preprint 93-76, SME Annual Meeting, Feb. 15–18, 1993, Reno, NV. M&MP paper 93-622.

Discussion of this peer-reviewed and approved paper is invited and must be submitted, in duplicate, prior to May 31, 1994.

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Guan, Y., Han, K.N. The dissolution behavior of metals from silver/copper alloys in ammoniacal solutions. Mining, Metallurgy & Exploration 11, 12–19 (1994). https://doi.org/10.1007/BF03403034

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  • DOI: https://doi.org/10.1007/BF03403034

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