Recovery of nickel and cobalt from nitrate-based nickel laterite leach solutions using direct solvent extraction
Access Status
Open access
Authors
Hutton-Ashkenny, Michael Douglas
Date
2015Supervisor
Dr Don Ibana
Dr Keith Barnard
Type
Thesis
Award
PhD
Metadata
Show full item recordSchool
Department of Metallurgical and Minerals Engineering
Collection
Abstract
A direct solvent extraction system was developed to recover nickel and cobalt from nitrate-based nickel laterite liquors, as opposed to traditional sulphate-based liquors. The development and optimisation of promising solvent systems is reported, along with a comparison of three potential options to inform recommendations for commercial applications. Finally, an investigation into the chemical stability of the solvent extraction reagents is detailed to determine if a nitrate-based process affected reagent stability compared to a sulphate-based process.
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Hutton-Ashkenny, M.; Ibana, Don; Barnard, K. (2015)© 2015 Elsevier Ltd. All rights reserved.There is currently no commercial process for recovery of nickel and cobalt from a nitrate-based laterite leach liquor via solvent extraction. Such a process is becoming of interest ...
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