Electroleaching of Zinc leach residues

Bhat, KL and Natarajan, KA and Ramachandran, T (1987) Electroleaching of Zinc leach residues. In: Hydrometallurgy, 18 (3). pp. 287-303.

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Abstract

A room-temperature cathodic electrolytic process was developed in the laboratory to recover zinc from industrial leach residues. The various parameters affecting the electroleaching process were studied using a statistically designed experiment. To understand the mechanisms behind the electrode processes, cyclic voltammetry and galvanostatic studies were carried out. The role of Einh measurements in monitoring such an electroleaching procedure is also shown. Since significant amounts of iron were also present in the leach liquor, attempts were made to purify it before zinc recovery by electrowinning. Reductive dissolution and creation of anion vacancies were found to be responsible for the dissolution of zinc ferrite present in the leach residue. A flow sheet of the process is given.

Item Type:	Journal Article
Publication:	Hydrometallurgy
Publisher:	Elsevier Science
Additional Information:	copy right of this article belongs to Elsevier Science
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	15 Jul 2009 08:17
Last Modified:	19 Sep 2010 05:34
URI:	http://eprints.iisc.ac.in/id/eprint/20799

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