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The mechanism of selenium vaporisation from silver selenide, the major carrier of selenium in copper depleted anode slimes, was studied using isothermal oxidation of synthetic, massive Ag2Se in flowing, dry oxygen and oxygen + 20 % sulfur dioxide mixtures at 450–550 °C. The reaction rates expressed as mass change rate indicate that in pure oxygen at 550 °C the reactions essentially cease within 1 h...
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