Abstract
Enargite, known as one of the major arsenic containing copper minerals , with approximately 19% arsenic , introduces challenges to typical processing options. In most hydrometallurgical processing methods, arsenic remediation occurs after the copper recovery in an autoclave or in a stepwise neutralization process. In this study, the in situ precipitation of scorodite was investigated during an atmospheric leaching process in the presence of carbon-based catalysts and chloride media . The effective parameters of initial ferric addition, temperature , catalyst addition, and oxygen sparging rate were studied and the ferric behaviour was monitored during the scorodite precipitation . The most influential parameters on efficient scorodite precipitation are found to be: initial ferric addition, catalyst to concentrate ratio, and temperature . A 99% scorodite precipitation yield was achieved in this process.
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Jahromi, F.G., Ghahreman, A. (2018). In Situ Precipitation of Scorodite in Atmospheric Leaching of Enargite. In: Davis, B., et al. Extraction 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95022-8_134
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DOI: https://doi.org/10.1007/978-3-319-95022-8_134
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