Minerals & Metallurgical Processing

, Volume 35, Issue 2, pp 55–60 | Cite as

Revisiting the mechanism of cementation: The role of hydrogen species in acidic aqueous media

  • J. Casado


This paper presents the results of an analysis and summary of relevant literature on the mechanism of cementation of metals in acidic aqueous media, with the aim of reconsidering the conventional assumptions. The simplicity of the process as a mere galvanic metal displacement is discussed, and the real effects of pH and hydrogen pressure in different cases assessed. Finally, an alternative mechanism scheme with respect to the role of hydrogen species, in agreement with reported data, is proposed.

Key words

Cementation Acids Precious metals 


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© The Society for Mining, Metallurgy & Exploration 2018

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of Sciences and BiosciencesAutonomous University of BarcelonaCerdanyola, BarcelonaSpain

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