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Vacuum Evaporation Technology for Treating Antimony-Rich Anode Slime

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Abstract

A vacuum evaporation technology for treating antimony-rich anode slime was developed in this work. Experiments were carried out at temperatures from 873 K to 1073 K and residual gas pressures from 50 Pa to 600 Pa. During vacuum evaporation, silver from the antimony-rich anode slime was left behind in the distilland in a silver alloy containing antimony and lead, and antimony trioxide was evaporated. The experimental results showed that 92% by weight of antimony can be removed, and the silver content in the alloy was up to 12.84%. The antimony trioxide content in the distillate was more than 99.7%, and the distillate can be used directly as zero-grade antimony trioxide (China standard).

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Central South University, Changsha Hunan, 410083, China

    Keqiang Qiu, Deqiang Lin & Xuelin Yang

Authors
  1. Keqiang Qiu
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  2. Deqiang Lin
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  3. Xuelin Yang
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Correspondence to Keqiang Qiu.

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Qiu, K., Lin, D. & Yang, X. Vacuum Evaporation Technology for Treating Antimony-Rich Anode Slime. JOM 64, 1321–1325 (2012). https://doi.org/10.1007/s11837-012-0458-2

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  • DOI: https://doi.org/10.1007/s11837-012-0458-2

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