Nhlamulo Mkhawana, Margreth Tadie
Organic additives play a very important role in copper electrowinning to facilitate the production of cathode deposits with improved morphology. Guar has been used as the standard organic additive in copper electrowinning (EW) because of its compatibility with solvent extraction (SX) stage, as well as its ability to eliminate dendrite growth on the cathode surface. Dendrite formation produces an undesirable rough cathode surface, and a loss in current efficiency can be expected due to short circuits resulting from dendrite growth. In tankhouses, guar is dosed continuously since its performance reduces as it degrades by hydrolysis under acidic conditions. This project investigated the interaction of guar dosage with other electrowinning operating parameters and their effect on current efficiency and deposit quality. A bench scale electrowinning cell was used to conduct 24-hour electro winning experiments by employing a mixed level factorial experimental design to investigate these variables.
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title={Effect of varying operating conditions on cathode surface roughness using guar as a smoothing agent in copper electrowinning},
author={Nhlamulo Mkhawana and Margreth Tadie},
year={2021},
language={en}
}TY - JOUR TI - Effect of varying operating conditions on cathode surface roughness using guar as a smoothing agent in copper electrowinning AU - Nhlamulo Mkhawana AU - Margreth Tadie PY - 2021 LA - en ER -
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