Metal Science and Heat Treatment

, Volume 61, Issue 1–2, pp 90–95 | Cite as

Highly Efficient and Environmental Process for Removing Alkali Metals from Aluminum Melt

  • Huosheng Wang
  • Gaosheng Fu
  • Chaozeng Cheng
  • Liandeng Wang

A novel process for removing Na and Ca from electrolytic aluminum melt is suggested, where the flux is a mixture of AlF3 particles with argon. The technology does not employ chlorine, which eliminates the unfavorable consequences of its use, i.e., contamination of the environment and corrosion of the equipment. Aspin rotor is used to provide uniform distribution of AlF3 and argon in the aluminum melt. The efficiency of removal of alkali metals from the melt at different temperatures, aluminum masses and initial concentrations of Na and Ca is determined. An optimum concentration of the AlF3 addition in the aluminum melt is suggested.

Key words

electrolytic aluminum melt removal of alkali metals aluminum fluoride thermodynamics 


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Huosheng Wang
    • 1
    • 2
  • Gaosheng Fu
    • 1
  • Chaozeng Cheng
    • 1
  • Liandeng Wang
    • 3
  1. 1.School of Materials Science and EngineeringFuzhou UniversityFuzhouChina
  2. 2.School of Materials Science and EngineeringFujian University of TechnologyFuzhouChina
  3. 3.School of Mechanical Engineering and AutomationFuzhou UniversityFuzhouChina

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