Article
Extraction of antimony from a hydrochloric acid side stream of copper electro-refining by hydrolysis
Author/s | Díaz, Eduardo
Maldonado Calvo, José A. Gallardo Fuentes, José María Paúl Escolano, Antonio |
Department | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte |
Publication Date | 2023-05 |
Deposit Date | 2023-05-15 |
Published in |
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Abstract | This work explores the feasibility of recovering antimony, present in a side stream of hydrochloric acid resulting from a copper electro-refining process, by hydrolysis with water. A range of variables that can affect the ... This work explores the feasibility of recovering antimony, present in a side stream of hydrochloric acid resulting from a copper electro-refining process, by hydrolysis with water. A range of variables that can affect the process have been studied. According to the results, under optimal conditions (pH = 0.645 T = 34 °C), antimony extraction yield is 94.4%. The reaction product is amorphous, with antimony content close to 70% and Cl and O contents similar to the stoichiometric ratios of complex oxychloride compounds. Moreover, significant amounts of arsenic and bismuth have been revealed. The presence of bismuth affects the extraction performance, while arsenic impairs its potential commercialisation. |
Funding agencies | European Regional Development Fund (ERDF) through the Interreg V-A Spain-Portugal Programme (POCTEP) 2014-2020 |
Project ID. | ERDF POCTEP 2014-2020 |
Citation | Díaz, E., Maldonado Calvo, J.A., Gallardo Fuentes, J.M. y Paúl Escolano, A. (2023). Extraction of antimony from a hydrochloric acid side stream of copper electro-refining by hydrolysis. Hydrometallurgy, 219 (106076). https://doi.org/10.1016/j.hydromet.2023.106076. |
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