Makanyire, T, Jha, A and Sutcliffe, S (2015) A Kinetic Analysis of Acid Leaching of Niobium and Zirconium from Titania Waste Residue Stream: An Energy Efficient Methodology for the Reclamation of Metal Values. In: Jha, A, Wang, C, Neelameggham, NR, Guillen, DP, Belt, CK, Kirchain, KR, Spangenberger, JS, Johnson, F, Gomes, AJ, Pandey, A and Hosemann, P, (eds.) Energy Technology 2015: Carbon Dioxide Management and Other Technologies. TMS 2015, 144th Annual Meeting & Conference, 15-19 Mar 2015, Walt Disney World, Orlando, Florida, USA. John Wiley & Sons , 115 - 122 (7). ISBN 1119093260
Abstract
Residues from rutile chlorination plants often contain relatively high concentrations of critical metals, essential for energy devices. Ironically, the conventional method of extraction of niobium and zirconium is quite energy demanding and detrimental to the environment. In this investigation, the kinetics of dissolution of niobium and zirconium from titania waste in hydrochloric acid solutions are investigated. The thermodynamic stability of minerals demands the use of chlorination, carbothermic reduction or alkaline fusion for breakdown of their mineral concentrate and upgrading before leaching in acid, usually hydrofluoric acid. Reclamation of niobium and zirconium values from titania waste presents an opportunity for a low energy process to be utilised. The effects of parameters leaching temperature (25 - 90 oC), acid concentration (0.5 - 2.5M), stirring speed and solid-to-liquid ratio were determined in the experiments. Leachates were analysed by ICP OES, using which the models for the leaching processes and activation energies were determined.
Metadata
Item Type: | Proceedings Paper |
---|---|
Authors/Creators: |
|
Editors: |
|
Keywords: | Niobium, zirconium, extraction, leaching, kinetics, rutile |
Dates: |
|
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: | 05 Nov 2015 15:29 |
Last Modified: | 21 Feb 2024 15:38 |
Status: | Published |
Publisher: | John Wiley & Sons |
Identification Number: | 10.1007/978-3-319-48220-0_13 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:85902 |