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Abstract

Anode overpotential for oxygen evolution using traditional Pb.Ag alloys constitutes a major component of the energy requirements for the electrolytic production of zinc and copper from their mineral ore. Two basic approaches have been used to tackle the problem of reducing the anode overpotential for oxygen evolution in acidic media in order to produce potential energy savings of 250 kWhr/tonne. The first approach was to conduct a literature survey, using the lower oxide/higher oxide hypothesis of Tseung to identify and evaluate novel candidate materials. The second approach evaluated the use of Teflon bonded PbO(2) electrodes and other appropriate electrode structures to increase the surface area of the anode.

Additional information

Authors: TSEUNG A C C, City University, Chemical Energy Research Centre, London (GB);YEH S, City University, Chemical Energy Research Centre, London (GB);LIU X, City University, Chemical Energy Research Centre, London (GB);KELSALL G H, Imperial College, Department of Mineral Resources Engineering, London (GB);DYKSTRA P, Imperial College, Department of Mineral Resources Engineering, London (GB)
Bibliographic Reference: EUR 13259 EN (1991) 90 pp., MF, ECU 4, blow-up copy ECU 11.25
Availability: (2)
Record Number: 199110415 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en