Depolarized SnO2-based Gas Anodes for Electrowinning

  • saijun xiao Anhui University of Technology,China
  • Geir Martin Haarberg

Abstract


SnO2-based porous anodes were prepared and the behavior of gas bubbles on the porous anodes with different original coarse grain size, immersed in ethanol to simulate molten chlorides, was primarily investigated. SnO2-based porous anodes were used as gas anodes for the electrowinning of silver in CaCl2-NaCl-CaO-AgCl melts at 680 °C. Hydrogen was introduced to the anode/electrolyte interface through the gas anode. Carbon was used as the cathode. Obvious depolarization of the anode potential was observed after the introduction of hydrogen comparing with no reducing gas introduced, indicating the involvement of hydrogen in the anode reaction. Metallic silver was deposited on the cathode.

Published
2014/02/10
How to Cite
xiao, saijun, & Haarberg, G. M. (2013). Depolarized SnO2-based Gas Anodes for Electrowinning. Journal of Mining and Metallurgy, Section B: Metallurgy, 49(1), 71. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/2725
Issue
Vol. 49 No. 1 (2013)
Section
Original Scientific Paper

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