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Cementation of copper ions onto a rotating disc electrode (RDE) of zinc and iron, either alone or associated as sacrificial metals is studied. The influence of operating temperature (10–50°C range) confirms copper cementation limitation by mass transfer on iron and zinc, with the systems presenting mass transfer coefficients in the range 8–50·10 −5 ms −1 . Electrode potential changes...
In this study, the cementation of copper ions on iron and zinc as sacrificial metals in a fluidized bed configuration was carried out. A preliminary hydrodynamic study checked the non-segregating behaviour of iron/zinc mixtures during fluidization experiments. The efficiency of the mixtures in copper recovery has been estimated in terms of kinetic and apparent mass transfer coefficients according...
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