Sina Shakibani, Alireza Mahmoudi
The supply of fresh water is becoming an increasingly important issue in hydrometallurgical treatment of mineral ores. The problem may significantly reduce if the extraction process can incorporate the usage of saltwater throughout the whole hydrometallurgical operation. Seawater as the main source of saltwater is a potential alternative to freshwater. In this research, the effect of the chloride ions, in a range of 0 to 40 g/L, on the solvent extraction of copper with LIX 984N was studied. LIX 984N has been commercially used in copper solvent extraction around the world. Increasing the concentration of Cl− was shown to increase the H+ activity and formation of CuCl+ and CuCl2 species. The solution acidity did not have a negative effect on the extent of copper extraction and extraction rate, in the presence and absence of chloride ion, in contrast to recent studies. The chloride addition was even shown to have a positive impact on copper extraction at pHs below 2 and at shorter mixing times. Through thermodynamic studies, it was shown that increasing chloride concentration results in both higher H+ activity and an increase in the activity of copper chloride complexes, improving the extent of copper extraction.
@article{d28f86eb-36b7-4c9b-87f9-8c847d06ed4a,
title={The effect of chloride ions on copper solvent extraction from sulfate-chloride medium using LIX 984N},
author={Sina Shakibani and Alireza Mahmoudi},
year={2020},
language={en}
}TY - JOUR TI - The effect of chloride ions on copper solvent extraction from sulfate-chloride medium using LIX 984N AU - Sina Shakibani AU - Alireza Mahmoudi PY - 2020 LA - en ER -
Copper solvent extraction units at large hydrometallurgical plants face constraints in metal recovery, phase disengagement, and reagent consumption, d
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