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SOLVENT EXTRACTION OF ZINC FROM ACIDIC LEACH SOLUTIONS

Authors: Todor Angelov; Ivanka Valchanova;

SOLVENT EXTRACTION OF ZINC FROM ACIDIC LEACH SOLUTIONS

Abstract

An initial test work was carried out to demonstrate that solution produced by autoclave acid leaching of Electric Arc Furnace Dust (EAFD) from the steel production could be processed through solvent extraction (SX) to recover zinc. Solvent extraction is a process for purification of the leach solution that extracts mainly zinc from other metallic impurities. To assess zinc extraction different counter-current extraction and strip configurations were tested. Extractant Di-2-ethylhexyl phosphoric acid (D2EHPA) and Shellsol D100 as a diluent were used in this investigation. The main operational parameters and the results obtained in the test work are presented in this paper. Well over 90% of the zinc was extracted from the pregnant leach solution using multi-stage SX circuit configuration and pH adjustment. Details of circuit configurations, phase disengagement times and crud generation are also shown.

Keywords

Mining engineering. Metallurgy, zinc, TN1-997, zinc, solvent extraction, circuit configuration, solvent extraction

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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