Abstract
A leaching study was conducted on South America oxidized copper ore assaying 3.10% Cu, and the process parameters were optimized, including leaching temperature, leaching time, acid consumption, liquid-solid ratio and stirring rate. The results show that copper leaching rate of 92.02% were achieved under the optimized conditions as follows: raw ore crushed to 100% passing 1mm, leaching by sulfuric acid at 70°C for 1.5h with a sulfuric acid consumption of 150kg/t, liquid-solid ratio of 2:1, stirring rate of 300r/min. The leaching solution is a good feed for the subsequent extraction-electrowinning processes due to its high copper concentration and low contents of impurities like calcium and iron ions.
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Zhu, D., Wu, T., Guo, Z., Pan, J., & Li, Z. (2016). Studies on leaching of oxidized copper ore from South America. In Characterization of Minerals, Metals, and Materials 2016 (pp. 337–344). Springer International Publishing. https://doi.org/10.1007/978-3-319-48210-1_41
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