Journal
SOLVENT EXTRACTION AND ION EXCHANGE
Volume 29, Issue 5-6, Pages 755-781Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/07366299.2011.595628
Keywords
Synergistic solvent extraction; LIX 63; 5,8-diethyl-7-hydroxydodecan-6-oxime; Versatic 10; carboxylic acid; selective; kinetics
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Funding
- Minerals Down Under National Research Flagship under the Australian Government's Cooperative Research Centres
- Parker CRC under the Australian Government's Cooperative Research Centres Program
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The combination of LIX 63 and Versatic 10 acts synergistically for the selective extraction of nickel and cobalt from impurities of manganese, magnesium, and calcium. Nickel extraction kinetics is, however, slow relative to cobalt. The present work exploited this difference to selectively remove Co (1.0 g/L) from a Ni-rich feed solution (20 g/L) containing aforementioned impurities to achieve a raffinate Ni:Co ratio > 667. Batch testing was used to assess the effect of various factors on selective metal extraction. The selective stripping of the resulting loaded organic was also assessed. The metal selectivity properties of the organic solution did not deteriorate over five cycles.
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