Journal
HYDROMETALLURGY
Volume 107, Issue 3-4, Pages 63-67Publisher
ELSEVIER
DOI: 10.1016/j.hydromet.2011.01.009
Keywords
Mine tailing pond; Zinc extraction; Fe bioxidation removal; Bateman Pulsed Column; lonquest 290
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Funding
- EGMASA (Andalusia, Spain)
- Spanish Ministry for Science and Innovation [CTQ2009-07432]
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A stream of effluent from a mine tailings pond, containing zinc, ferrous ions and other metals, required treatment to prevent pollution and recover valuable metals. A solvent extraction (SX) process using lonquest 290 as extractant was developed to recover the Zn from the effluent. Ferrous ions were bio-oxidized and removed by selective alkaline precipitation prior to the zinc extraction. The Fe removal as well as the SX process were developed successfully at laboratory scale and verified in a pilot plant on-site, using two Bateman Pulsed Columns for the extraction and stripping of Zn. The results were satisfactory obtaining above 95% recovery of the Zn. (C) 2011 Elsevier B.V. All rights reserved.
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