Solar Production of Zinc from the Zinc Silicate Ore Willemite

[+] Author and Article Information
Anke Weidenkaff, Armin Reller

Solid State Chemistry, University of Augsburg, Universitätsstr. 1, 86159 Augsburg, Germany

Aldo Steinfeld

ETH-Swiss Federal Institute of Technology, Department of Mechanical and Process Engineering, CH-8092 Zurich, Switzerland, Paul Scherrer Institute, CH-5232, Switzerland

J. Sol. Energy Eng 123(2), 98-101 (Nov 01, 2000) (4 pages) doi:10.1115/1.1353847 History: Received June 01, 2000; Revised November 01, 2000
Copyright © 2001 by ASME
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Thermochemical reduction of zinc silicate in an inert gas stream (nitrogen, 100 mL/min) in a thermobalance
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Schematic and photograph of the experimental set-up for the thermochemical reduction of willemite installed in Odeillo, France
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Photograph of a partly reduced willemite sample collected in the Franklin mines, New Jersey, USA and irradiated in the dedicated solar furnace at Odeillo, France
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XRD of the zinc ore from the Puttaba mine before and after the experiment
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Scanning electron micrograph of the surface of a partly reacted willemite sample covered with molten (and resolidified) silica product
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XRD of the condensed product after the experiment after the experiment



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