Anodic behaviour of copper during electrorefining using a rotating ring-disc electrode |
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Authors: | L. Mirkova St. Rashkov |
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Affiliation: | (1) Institute of Physical Chemistry, Bulgarian Academy of Sciences, 1040 Sofia, Bulgaria |
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Abstract: | The anodic dissolution of copper during electrorefining has been studied by a rotating ring-disc electrode technique. The influence of temperature, some additives (Cl– ions and polyethylene glycol) and the anode-alloying element (phosphorus) on the polarization curves was examined. It was shown that at certain conditions the concentration of Cu+ ions on the ring electrode decreased. As a result, a reduction of powdered copper in the electrolyte due to the disproportionation of cuprous ions may be expected. |
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