Hara, YSR and Jha, A (2012) A novel low-energy route for the extraction of copper and cobalt metals/alloys from the Zambian sulphide concentrates. In: TMS Annual Meeting. TMS 2012, 11-15 Mar 2012, Orlando, Florida, USA. , 79 - 87. ISBN 9781118291221
Abstract
Conventional smelting of copper - cobalt - iron sulphide concentrates result in the oxidation of cobalt and iron, which are subsequently lost into the slag. The emission of SO 2 bearing gas from smelting causes serious health and environmental problems. In this investigation, three different types of copper-cobalt-iron sulphide concentrates, derived from froth flotation, were investigated., the concentrates, each containing more than 40 wt % percent gangue material, were directly reduced in the presence of lime and carbon in the temperature range of 1073 K - 1573 K, for the production of an alloy containing copper, cobalt and iron. We demonstrate the basic principles of process physical chemistry for the recovery of alloy by carrying out a detailed process analysis utilising the predictions from thermodynamic equilibrium and the results from the kinetics of reduction reaction. The effect of temperature on the reduction kinetics and alloy formation were determined and analyzed in detail.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | CoFe alloy; Process chemistry; Reduction; SO 2 |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Materials Research (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 Jan 2015 12:42 |
Last Modified: | 19 Dec 2022 13:26 |
Status: | Published |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:77464 |