Abstract
To clarify the anodic reaction mechanism of pyrite and galena in acidic solution, measurements of the electrode potentials and anodic polarization behaviours, and galvanostatic anodizing were carried out.(1) The electrode potentials of pyrite and galena were more positive than those of the each component metals, and pyrite acts just as the platinum in sulfuric acid solutions.(2) Galena shows an “active-passive” behaviour similar to the lead electrode in sulfuric acid solutions.(3) Pyrite was anodically dissolved in sulfuric, hydrochloric and nitric acid solutions, and galena in perchloric and silicofluoric acid solutions, if the conditions were appropriate.(This article is not displayable. Please see full text pdf.)
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