Zinc electrowinning with gas diffusion anodes: State of the art and future developments

M. Bestetti, U. Ducati, G. Kelsall, G. Li, E. Guerra, R. Allen

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Hydrogen gas diffusion anodes (HGDA) have been considered previously as alternatives to oxygen-evolving lead alloy anodes in metal electrowinning. Despite their higher capital costs, the substantial decrease in electrowinning production costs potentially offered by HGDAs is causing renewed interest in their industrial use. This paper reviews the more recent applications of hydrogen gas diffusion anodes in industrial electrowinning. Using data from the literature, a simplified economical assessment is presented for a zinc electrowinning tank house implementing hydrogen gas diffusion anodes; optimum operating current densities of about 3 kA m-2 are predicted.

    Original languageEnglish
    Pages (from-to)459-469
    Number of pages11
    JournalCanadian Metallurgical Quarterly
    Volume40
    Issue number4
    DOIs
    Publication statusPublished - Oct 2001

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    ASJC Scopus subject areas

    • Metals and Alloys

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