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2018 | OriginalPaper | Buchkapitel

In Situ Precipitation of Scorodite in Atmospheric Leaching of Enargite

verfasst von : Fazel G. Jahromi, Ahmad Ghahreman

Erschienen in: Extraction 2018

Verlag: Springer International Publishing

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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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Metadaten
Titel
In Situ Precipitation of Scorodite in Atmospheric Leaching of Enargite
verfasst von
Fazel G. Jahromi
Ahmad Ghahreman
Copyright-Jahr
2018
DOI
https://doi.org/10.1007/978-3-319-95022-8_134

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