Shila Jafari, Mikko Kiviluoma
In electrorefining, Group 15 impurities arsenic, antimony and bismuth, may precipitate within the bulk electrolyte as floating slimes and contaminate the copper cathodes. In order to determine the impurity specific thresholds related to the formation of suspended solids, synthetic copper electrorefining electrolytes with different concentrations of arsenic, antimony and bismuth were investigated by a continuous filtration method. The amount and composition of the detected elements were analyzed using SEM-EDS, yielding significant insights into the floating slime formation process. The results indicate that the concentration of antimony in the electrolyte has a pronounced influence on the formation of floating slimes, revealing a threshold limit of [Sb] ≥800 mg/L for effective slime generation. Furthermore, it was observed that arsenic concentration affects the levels of antimony arsenate within the slimes, while the presence of bismuth does not correlate with its solution concentration but rather suggests adsorption phenomena on other floating compounds. These findings contribute to understanding how impurities influence floating slime behaviors in copper electrorefining, with implications for enhancing copper quality and process efficiency.
@article{53e93d34-9041-48c2-b721-e75d232058b1,
title={Effect of typical impurities for the formation of floating slimes in copper electrorefining},
author={Shila Jafari and Mikko Kiviluoma},
year={2017},
language={en}
}TY - JOUR TI - Effect of typical impurities for the formation of floating slimes in copper electrorefining AU - Shila Jafari AU - Mikko Kiviluoma PY - 2017 LA - en ER -
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