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Study on the Axial Dispersion of Liquid in Column Flotation

ZHOU Kun; ZENG AiWu; GAO Changbao; YU Guocong   

  1. State Key Laboratory of Chemical Engineering, Chemical Engineering Research Center, Tianjin
    University, Tianjin 300072, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-08-28 Published:2003-08-28
  • Contact: ZHOU Kun

浮选柱中液相轴向返混的研究

周鹍; 曾爱武; 高长宝; 余国琮   

  1. State Key Laboratory of Chemical Engineering, Chemical Engineering Research Center, Tianjin
    University, Tianjin 300072, China
  • 通讯作者: 周鹍

Abstract: An experimental study on the axial dispersion of liquid was carried out in a 0.382-m-ID
flotation columnpacked with different structured packings or free of packings. The
correlations of axial Peclet numbers with theliquid and gas superficial Reynolds numbers
were developed for various packings. Among the packings tested, itis found that in the
column packed with 250Y or 350Y packings the axial dispersion is the lowest. The additionof
frother can decrease the axial dispersion. By the simulation analysis of the one-dimension
dispersion model ofpacked flotation column, it is found that small axial dispersion, high
collection rate constant and low axial liquidvelocity can increase the collection zone
recovery.

Key words: packed flotation column, flotation column, numerical analysis, mineral processing

摘要: An experimental study on the axial dispersion of liquid was carried out in a 0.382-m-ID
flotation columnpacked with different structured packings or free of packings. The
correlations of axial Peclet numbers with theliquid and gas superficial Reynolds numbers
were developed for various packings. Among the packings tested, itis found that in the
column packed with 250Y or 350Y packings the axial dispersion is the lowest. The additionof
frother can decrease the axial dispersion. By the simulation analysis of the one-dimension
dispersion model ofpacked flotation column, it is found that small axial dispersion, high
collection rate constant and low axial liquidvelocity can increase the collection zone
recovery.

关键词: packed flotation column;flotation column;numerical analysis;mineral processing