Volume 34 Issue 4
Jul.  2021
Turn off MathJax
Article Contents
LI Fei, GUO Xue-yi, TIAN Qing-hua. Preparation process of α-Al2O3 from secondary aluminum dross[J]. Chinese Journal of Engineering, 2012, 34(4): 383-389. DOI: 10.13374/j.issn1001-053x.2012.04.012
Citation: LI Fei, GUO Xue-yi, TIAN Qing-hua. Preparation process of α-Al2O3 from secondary aluminum dross[J]. Chinese Journal of Engineering, 2012, 34(4): 383-389. DOI: 10.13374/j.issn1001-053x.2012.04.012

Preparation process of α-Al2O3 from secondary aluminum dross

More Information
  • Received Date: February 24, 2011
  • Available Online: July 29, 2021
  • The preparation of α-Al2O3 with a process of low-temperature alkaline melting,leaching and seed precipitation was explored by using secondary aluminum ash as a raw material.A series of experiments were done to investigate the effects of factors such as alkali-to-dross ratio,salt-to-dross ratio,smelting temperature,smelting time,leaching temperature,leaching time and solid-to-liquid ratio on the leaching rates of Al and Si.The feasibility of using seed precipitation as a successive treatment technology of leachate to prepare alumina was discussed.The optimum conditions of the process were determined as follows:alkali-to-dross ratio 1.3,salt-to-dross ratio 0.7,smelting temperature 500℃,smelting time 60 min,leaching temperature 60℃,leaching time 30 min,and solid-to-liquid ratio 1:4.The leaching rate of aluminum can reach to 92.71%.It is indicated that seed precipitation as a successive treatment technology of leachate is feasible and effective.

Catalog

    Article Metrics

    Article views (367) PDF downloads (32) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return