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Modelling and process optimisation of antimony removal from a complex copper concentrate
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.ORCID iD: 0000-0002-3255-3051
Boliden Mineral AB.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
2012 (English)In: Transactions of Nonferrous Metals Society of China, ISSN 1003-6326, E-ISSN 2210-3384, Vol. 22, no 3, p. 675-685Article in journal (Refereed) Published
Abstract [en]

The modelling and optimization for the alkaline sulphide leaching of a complex copper concentrate containing 1.69% Sb and 0.14% Sn were studied. Response surface methodology, in combination with central composite face-centred design (RSM-CCF), was used to optimise the operating parameters. The leaching temperature, sulphide ion concentration and solid concentration werechosen as the variables, and the response parameters were antimony and tin recovery, and the time required to achieve 90% Sb dissolution. It was confirmed that the leaching process was strongly dependent on the reaction temperature as well as the sulphide ion concentration without any significant dependence on the solid concentration. Furthermore, a mathematical model was constructed tocharacterise the leaching behaviour. The results from the model allow identification of the most favourable leaching conditions. The model was validated experimentally, and the results show that the model is reliable and accurate in predicting the leaching process.

Place, publisher, year, edition, pages
2012. Vol. 22, no 3, p. 675-685
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-3678DOI: 10.1016/S1003-6326(11)61231-4ISI: 000302864800029Scopus ID: 2-s2.0-84859748059Local ID: 17eb2ed0-c22d-11df-a707-000ea68e967bOAI: oai:DiVA.org:ltu-3678DiVA, id: diva2:976537
Note
Godkänd; 2012; 20100917 (samawe)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Awe, Samuel AyowoleKhoshkhoo, MohammadSandström, Åke

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